Avery Broderick

Avery Broderick profile picture
Delaney Family John Archibald Wheeler Chair in Theoretical Physics
Perimeter Institute for Theoretical Physics
Perimeter Research Chair
Associate Faculty
Areas of research:
Cosmology
Strong Gravity
The goal of my research program is to elucidate the fundamental nature and astronomical consequences of astrophysical black holes. I do this via a number of independent projects, spanning scales from the horizon to the universe, each of which are connected by the critical role played by the extreme physical conditions near black hole horizons. My current focus is the interpretation and analysis of horizon-resolving millimeter wave observations of the supermassive black holes at the centers of the Milky Way and M87. These observations provide unprecedented access to the immediate vicinity of the horizon, and therefore to the effects of strong gravity near black holes. Hence they provide an ideal opportunity to probe both the high-energy astrophysics powering some of the most energetic phenomena in the universe and test the validity of general relativity in the strongly non-linear limit. This work involves developing both the models and the analysis techniques, often combining the high-resolution radio data with additional observations in multiple wavebands, to extract answers to the physically relevant questions. In addition, I am also very involved with a number of efforts to assess the impact of black holes on cosmological scales. These efforts bring a wide variety of astrophysical areas together, ranging from studying the most extreme plasmas in the universe to the cosmological thermodynamic history and its impact on the growth of structures.
  • 2007 - 2011 Canadian Institute for Theoretical Astrophysics Senior Research Associate
  • 2004 - 2007 Institute for Theory and Computation, Harvard-Smithsonian Center for Astrophysics Institute for Theory and Computation Postdoctoral Fellow
  • Excellence in Science Research Award, University of Waterloo
  • Nelson P. Jackson Aerospace Award, National Space Club and Foundation (shared with EHTC)
  • 2020 Bruno Rossi Prize, American Astronomical Society (shared with EHTC)
  • Einstein Medal, Albert Einstein Society (shared with EHTC)
  • American Ingenuity Award in Physical Sciences, Smithsonian Institution (shared with EHTC)
  • Breakthrough Prize in Fundamental Physics, Fundamental Physics Prize Foundation (shared with EHTC)
  • Diamond Achievement Award, National Science Foundation (shared with EHTC)
  • Beatrics D. Tremaine Fellow, Prize, Canadian Institute for Theoretical Astrophysics
  • Issaoun, S. et al. 2021. "Persistent Non-Gaussian Structure in the Image of Sagittarius A* at 86 GHz", ApJ, 915, 99
  • Janssen, M. et al. 2021. "Event Horizon Telescope observations of the jet launching and collimation in Centaurus A", Nature Astronomy, Advanced Online Publication
  • Narayan, R. et al. 2021. "The Polarized Image of a Synchrotron-emitting Ring of Gas Orbiting a Black Hole", ApJ, 912, 35
  • Kocherlakota, P. et al. 2021. "Constraints on black-hole charges with the 2017 EHT observations of M87*", PRD, 103, 104047
  • EHT MWL Science Working Group, 2021. "Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign", ApJL, 911, L11
  • The Event Horizon Telescope Collaboration, 2021. "First M87 Event Horizon Telescope Results. VII. Polarization of the Ring", ApJL, 910, L12
  • The Event Horizon Telescope Collaboration, 2021. "First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon", ApJL, 910, L13
  • Goddi, C. et al., 2021. "Polarimetric Properties of Event Horizon Telescope Targets from ALMA", ApJL, 910, L14
  • Jeter, B. & Broderick, A.E., 2021. "Reconciling EHT and Gas-dynamics Measurements in M87: Is the Jet Misaligned at Parsec Scales?", ApJ, 908, 139
  • Broderick, A.E. & Pesce, D.W., 2020. "Closure Traces: Novel Calibration-insensitive Quantities for Radio Astronomy", ApJ, 904, 126
  • Wielgus, M. et al., 2020. "Monitoring the Morphology of M87* in 2009-2017 with the Event Horizon Telescope", ApJ, 901, 67
  • Kim, J.-Y., Krichbaum, T.P., Broderick, A.E., et al. 2020. "Event Horizon Telescope imaging of the archetypal blazar 3C 279 at an extreme 20 microarcsecond resolution", A&A, 640, A69
  • Broderick, A.E. et al. 2020. "THEMIS: A Parameter Estimation Framework for the Event Horizon Telescope", ApJ, 897, 139
  • Broderick, A.E., Pesce, D.W., Tiede, P., Pu, H.-Y., Gold, R. 2020. "Hybrid Very Long Baseline Interferometry Imaging and Modeling with THEMIS", ApJ, 898, 9
  • Gold, R., Broderick, A.E., et al. 2020. "Verification of Radiative Transfer Schemes for the EHT", ApJ, 897, 148
  • Jeter, B., Broderick, A.E., Gold, R., 2020. "Differentiating disc and black hole-driven jets with EHT images of variability in M87", MNRAS, 493, 5606
  • Tiede, P., Broderick, A.E., Shalaby, M., Pfrommer, C., Puchwein, E., Chang, P., Lamberts, A., 2020. "Constraints on the Intergalactic Magnetic Field from Bow Ties in the Gamma-Ray Sky", ApJ, 892, 123
  • Roelofs, F. et al. 2020. "SYMBA: An end-to-end VLBI synthetic data generation pipeline. Simulating Event Horizon Telescope observations of M 87", A&A, 636, A5
  • Shalaby, M., Broderick, A.E., Chang, P., Pfrommer, C., Puchwein, E., Lamberts, A., 2020. "The growth of the longitudinal beam-plasma instability in the presence of an inhomogeneous background", JPlPh, 86, 535860201
  • Tiede, P., Pu, H.-Y., Broderick, A.E., Gold, R., Karami, M., Preciado-López, J.A., 2020. "Spacetime Tomography Using the Event Horizon Telescope", ApJ, 892, 132
  • Doeleman, S. et al. 2019. "Studying Black Holes on Horizon Scales with VLBI Ground Arrays", Astro2020: Decadal Survey on Astronomy and Astrophysics, APC white papers, BAAS, 51, 256
  • Jeter, B., Broderick, A.E., McNamara, B.R., 2019. "Impact of Accretion Flow Dynamics on Gas-dynamical Black Hole Mass Estimates", ApJ, 882, 82
  • Porth, O. + The Event Horizon Telescope Collaboration, 2019. "The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project", ApJ, 243, 26
  • The Event Horizon Telescope Collaboration, 2019. "First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole", ApJ, 875, L1
  • The Event Horizon Telescope Collaboration, 2019. "First M87 Event Horizon Telescope Results. II. Array and Instrumentation", ApJ, 875, L2
  • The Event Horizon Telescope Collaboration, 2019. "First M87 Event Horizon Telescope Results. III. Data Processing and Calibration", ApJ, 875, L3
  • The Event Horizon Telescope Collaboration, 2019. "First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring", ApJ, 875, L5
  • The Event Horizon Telescope Collaboration, 2019. "First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole", ApJ, 875, L6
  • The Event Horizon Telescope Collaboration, 2019. "First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole", ApJ, 875, L4
  • Issaoun, S., Johnson, M. D., Blackburn, L., Brinkerink, C. D., Mościbrodzka, M., Chael, A., Goddi, C., Martí-Vidal, I., Wagner, J., Doeleman, S. S., Falcke, H., Krichbaum, T. P., Akiyama, K., Bach, U., Bouman, K. L., Bower, G. C., Broderick, A., Cho, I., Crew, G., Dexter, J., Fish, V., Gold, R., Gómez, J. L., Hada, K., Hernández-Gómez, A., Janßen, M., Kino, M., Kramer, M., Loinard, L., Lu, R. -S., Markoff, S., Marrone, D. P., Matthews, L. D., Moran, J. M., Müller, C., Roelofs, F., Ros, E., Rottmann, H., Sanchez, S., Tilanus, R. P. J., de Vicente, P., Wielgus, M., Zensus, J. A., Zhao, G. -Y., 2019. "The Size, Shape, and Scattering of Sagittarius A* at 86 GHz: First VLBI with ALMA", ApJ, 871, 30
  • Broderick, A.E., Tiede, P., Chang, P., Lamberts, A., Pfrommer, C., Puchwein, E., Shalaby, M., Werhahn, M., 2018. "Missing Gamma-Ray Halos and the Need for New Physics in the Gamma-Ray Sky", ApJ, 868, 87
  • Bower, G.C., Broderick, A., Dexter, J., Doeleman, S., Falcke, H., Fish, V., Johnson, M.D., Marrone, D.P., Moran, J.M., Moscibrodzka, M., Peck, A., Plambeck, R.L., Rao, R., 2018. "ALMA Polarimetry of Sgr A*: Probing the Accretion Flow from the Event Horizon to the Bondi Radius", ApJ, 868, 101
  • Johnson, M.D., Narayan, R., Psaltis, D., Blackburn, L., Kovalev, Y.Y., Gwinn, C.R., Zhao, G.-Y., Bower, G.C., Moran, J.M., Kino, M., Kramer, M., Akiyama, K., Dexter, J., Broderick, A.E., Sironi, L. 2018. "The Scattering and Intrinsic Structure of Sagittarius A* at Radio Wavelengths", ApJ, 865, 104
  • Pu, H.-Y., Broderick, A.E., 2018. "Probing the Innermost Accretion Flow Geometry of Sgr A* with Event Horizon Telescope", ApJ, 863, 148
  • Lu, R.-S., Krichbaum, T.P., Roy, A.L., Fish, V.L., Doeleman, S.S., Johnson, M.D., Akiyama, K., Psaltis, D., Alef, W., Asada, K., Beaudoin, C., Bertarini, A., Blackburn, L., Blundell, R., Bower, G.C., Brinkerink, C., Broderick, A.E., Cappallo, R., Crew, G.B., Dexter, J., Dexter, M., Falcke, H., Freund, R., Friberg, P., Greer, C.H., Gurwell, M.A., Ho, P.T.P., Honma, M., Inoue, M., Kim, J., Lamb, J., Lindqvist, M., Macmahon, D., Marrone, D.P., Marti-Vidal, I., Menten, K.M., Moran, J.M., Nagar, N.M., Plambeck, R.L., Primiani, R.A., Rogers, A.E.E., Ros, E., Rottmann, H., SooHoo, J., Spilker J., Stone, J., Strittmatter, P., Tilanus, R.P.J., Titus, M., Vertatschitsch, L., Wagner, J., Weintroub, J., Wright, M., Young, K.H., Zensun, J.A., Ziurys, L.M. 2018. "Detection of Intrinsic Source Structure at 3 Schwarzschild Radii with Millimeter-VLBI Observations of SAGITTARIUS A*", ApJ, 859, 60
  • Shalaby, M., Broderick, A.E., Chang, P., Pfrommer, C., Lamberts, A., Puchwein, E. 2018. "Growth of Beam-Plasma Instabilities in the Presence of Background Inhomogeneity", ApJ, 859, 45
  • Tiede, P., Broderick, A.E., Shalaby, M., Pfrommer, C., Puchwein, E., Chang, P., Lamberts, A. 2017. "Bow Ties in the Sky. II. Searching for Gamma-Ray Halos in the Fermi Sky Using Anisotropy", ApJ, 850, 157
  • Shalaby, M., Broderick, A.E., Chang, P., Pfrommer, C., Lamberts, A., Puchwein, E., 2017, "Importance of resolving the spectral support of beam-plasma instabilities in simulations", ApJ, 848, 81
  • Lacroix, T., Karami, M., Broderick, A.E., Silk, J., Boehm, C., 2017, "A unique probe of dark matter in the core of M87 with the Event Horizon Telescope", PRD, 96, 063008
  • Shalaby, M., Broderick, A.E., Chang, P., Pfrommer, C., Lamberts, A., Puchwein, E., 2017, "SHARP: A Spatially Higher-order, Relativistic Particle-in-cell Code", ApJ, 841, 52
  • Akiyama, K., Ikeda, S., Pleau, M., Fish, V.L., Tazaki, F., Kuramochi, K., Broderick, A.E., Dexter, J., Moscibrodzka, M., Gowanlock, M., Honma, M., Doeleman, S.S., 2017, "Superresolution Full-polarimetric Imaging for Radio Interferometry with Sparse Modeling", AJ, 153, 159
  • Akiyama, K., Kuramochi, K., Ikeda, S., Fish, V.L., Tazaki, F., Honma, M., Doeleman, S.S., Broderick, A.E., Dexter, J., Moscibrodzka, M., Bouman, K.L., Chael, A.A., Zaizen, M., 2017. "Imaging the Schwarzschild-radius-scale Structure of M87 with the Event Horizon Telescope Using Sparse Modeling", ApJ, 838, 1
  • Chang, P., Broderick, A.E., Pfrommer, C., Puchwein, E., Lamberts, A., Shalaby, M., Vasil, G., 2016. "The Linear Instability of Dilute Ultrarelativistic e± Pair Beams", ApJ, 833, 118
  • Karami, M., Broderick, A.E., Rahvar, S., Reid, M., 2016. "Resolving Microlensing Events with Triggered VLBI", ApJ, 833, 169
  • Broderick, A.E., Tiede, P., Shalaby, M., Pfrommer, C., Puchwein, E., Chang, P., Lamberts, A., 2016. "Bow Ties in the Sky I: The Angular Structure of Inverse Compton Gamma-ray Halos in the Fermi Sky", ApJ, 832, 109
  • Johannsen, T., Wang, C., Broderick, A.E., Doeleman, S.S., Fish, V.L., Loeb, A., Psaltis, D., 2016. "Testing General Relativity with Accretion-Flow Imaging of Sgr A*", PRL, 117, 091101
  • Fish, V.L., Johnson, M.D., Doeleman, S.S., Broderick, A.E., Psaltis, D., Lu, R., Akiyama, K., Alef, W., Algaba, J.C., Asada, K., Beaudoin, C., Bertarini, A., Blackburn, L., Blundell, R., Bower, G.C., Brinkerink, C., Cappallo, R., Chael, A.A., Chamberlin, R., Chan, C., Crew, G.B., Dexter, J., Dexter, M., Dzib, S.A., Falcke, H., Freund, R., Friberg, P., Greer, C.H., Gurwell, M.A., Ho, P.T.P., Honma, M., Inoue, M., Johannsen, T., Kim, J., Krichbaum, T.P., Lamb, J., León-Tavares, J., Loeb, A., Loinard, L., MacMahon, D., Marrone, D.P., Moran, J.M., Moscibrodzka, M., Ortiz-León, G.N., Oyama, T., Özel, F., Plambeck, R.L., Pradel, N., Primiani, R.A., Rogers, A.E.E., Rosenfeld, K., Rottmann, H., Roy, A.L., Ruszczyk, C., Smythe, D.L., SooHoo, J., Spilker, J., Stone, J., Strittmatter, P., Tilanus, R.P.J., Titus, M., Vertatschitsch, L., Wagner, J., Wardle, J.F.C., Weintroub, J., Woody, D., Wright, M., Yamaguchi, P., Young, A., Young, K.H., Zensus, J.A., Ziurys, L.M., 2016. "Persistent Asymmetric Structure of Sagittarius A* on Event Horizon Scales", ApJ 820, 90
  • Broderick, A.E., Fish, V.L., Johnson, M.D., Rosenfeld, K., Wang, C., Doeleman, S.S., Akiyama, K., Johannsen, T., Roy, A.L., 2016. "Modeling Seven Years of Event Horizon Telescope Observations with Radiatively Inefficient Accretion Flow Models", ApJ, 820, 137
  • Johannsen, T., Broderick, A.E., Plewa, P.M., Chatzopoulos, S., Doeleman, S.S., Eisenhauer, F., Fish, V.L., Genzel, R., Gerhard, O., Johnson, M.D., 2016, "Testing General Relativity with the Shadow Size of Sgr A*", PRL, 116, 031101
  • Johnson, M.D., Fish, V.L., Doeleman, S.S., Marrone, D.P., Plambeck, R.L., Wardle, J.F.C., Akiyama, K., Asada, K., Beaudoin, C., Blackburn, L., Blundell, R., Bower, G.C., Brinkerink, C., Broderick, A.E., Cappallo, R., Chael, A.A., Crew, G.B., Dexter, J., Dexter, M., Freund, R., Friberg, P., Gold, R., Gurwell, M.A., Ho, P.T.P., Honma, M., Inoue, M., Kosowsky, M., Krichbaum, T.P., Lamb, J., Loeb, A., Lu, R.-S., MacMahon, D., McKinney, J.C., Moran, J.M., Narayan, R., Primiani, R.A., Psaltis, D., Rogers, A.E.E., Rosenfeld, K., SooHoo, J., Tilanus, R.P.J., Titus, M., Vertatschitsch, L., Weintroub, J., Wright, M., Young, K.H., Zensus, J.A., Ziurys, L.M., 2015. "Resolved magnetic-field structure and variability near the event horizon of Sagittarius A*", Science, 350, 1242
  • Lamberts, A., Chang, P., Pfrommer, C., Puchwein, E., Broderick, A.E., Shalaby, M. 2015. "Patchy blazar heating: diversifying the thermal history of the intergalactic medium", ApJ, 811, 19
  • Broderick, A.E., Tchekhovskoy, A. 2015. "Horizon-Scale Lepton Acceleration in Jets: Explaining the Compact Radio Emission in M87", ApJ, 809, 97
  • Russell, H.R., Fabian, A.C., McNamara, B.R., Broderick, A.E. 2015. "Inside the Bondi radius of M87", MNRAS, 451, 588
  • Akiyama, K., Lu, R.-S., Fish, V.L., Doeleman, S.S., Broderick, A.E., Dexter, J., Hada, K., Kino, M., Nagai, H., Honma, M., Johnson, M.D., Algaba, J.C., Asada, K., Brinkerink, C., Blundell, R., Bower, G.C., Cappallo, R., Crew, G.B., Dexter, M., Dzib, S.A., Freund, R., Friberg, P., Gurwell, M., Ho, P.T.P., Inoue, M., Krichbaum, T.P., Loinard, L., MacMahon, D., Marrone, D.P., Moran, J.M., Nakamura, M., Nagar, N.M., Ortiz-Leon, G., Plambeck, R., Pradel, N., Primiani, R.A., Rogers, A.E.E., Roy, A.L., SooHoo, J., Tavares, J.-L., Tilanus, R.P.J., Titus, M., Wagner, J., Weintroub, J., Yamaguchi, P., Young, K.H., Zensus, A., Ziurys, L.M. 2015. "230 GHz VLBI observations of M87: event-horizon-scale structure at the enhanced very-high-energy gamma-ray state in 2012", ApJ, 807, 150
  • Broderick, A.E., Narayan, R., Kormendy, J., Perlman, E.S.., Rieke, M.J., Doeleman, S.S. 2015. "The Event Horizon of M87", ApJ, 805, 179
  • Psaltis, D., Narayan, R., Fish, V.L., Broderick, A.E., Loeb, A., Doeleman, S.S. 2015. "Event Horizon Telescope Evidence for Alignment of the Black Hole in the Center of the Milky Way with the Inner Stellar Disk", ApJ, 798, 15
  • Pen, Ue-Li, Broderick, A.E. 2014. "Possible astrophysical observables of quantum gravity effects near black holes", MNRAS, 445, 3370
  • Chang, P., Broderick, A.E., Pfrommer, C., Puchwein, E., Lamberts, A., Shalaby, M. 2014 "The Effect of Landau Damping on Ultrarelativistic Beam Plasma Instabilities", ApJ, 797, 110
  • Broderick, A.E., Pfrommer, C., Puchwein, E., Chang, P., Smith, K.M. 2014. "Lower Limits on the Anisotropy of the Extragalactic Gamma-Ray Background Implied by the 2FGL and 1FHL Catalogs", ApJ, 796, 12
  • Fish, V.L., Johnson, M.D., Lu, R.-S., Doeleman, S.S., Bouman, K.L., Zoran, D., Freeman, W.T., Psaltis, D., Narayan, R., Pankratius, V., Broderick, A.E., Gwinn, C.R., Vertatschitsch, L.E. 2014. "Imaging an Event Horizon: Mitigation of Scattering toward Sagittarius A*", ApJ, 795, 134
  • Johnson, M.D., Fish, V.L., Doeleman, S.S., Broderick, A.E., Wardle, J.F.C., Marrone, D.P. 2014. "Relative Astrometry of Compact Flaring Structures in Sgr A* with Polarimetric Very Long Baseline Interferometry", ApJ, 794, 150
  • Broderick, A.E., Pfrommer, C., Puchwein, E., Chang, P. 2014. "Implications of Plasma Beam Instabilities for the Statistics of the Fermi Hard Gamma-Ray Blazars and the Origin of the Extragalactic Gamma-Ray Background", ApJ, 790, 137
  • Lu, R.-S., Broderick, A.E., Baron, F., Monnier, J.D., Fish, V.L., Doeleman, S.S., Pankratius, V. 2014. "Imaging the Supermassive Black Hole Shadow and Jet Base of M87 with the Event Horizon Telescope", ApJ, 788, 120
  • Broderick, A.E., Johannsen, T., Loeb, A., Psaltis, D. 2014. "Testing the No-hair Theorem with Event Horizon Telescope Observations of Sagittarius A*", ApJ, 784, 7
  • Doeleman, S.S., Fish, V.L., Schenck, D.E.; Beaudoin, C., Blundell, R., Bower, G.C., Broderick, A.E., Chamberlin, R., Freund, R., Friberg, P., Gurwell, M.A., Ho, P.T.P., Honma, M., Inoue, M., Krichbaum, T.P., Lamb, J., Loeb, A., Lonsdale, C., Marrone, D.P., Moran, J.M., Oyama, T., Plambeck, R., Primiani, R.A., Rogers, A.E.E., Smythe, D.L., SooHoo, J., Strittmatter, P., Tilanus, R.P.J., Titus, M., Weintroub, J., Wright, M., Young, K.H., Ziurys, L.M. 2012. ``Jet-Launching Structure Resolved Near the Supermassive Black Hole in M87'', Science, 338, 355
  • Puchwein, E., Pfrommer, C., Springel, V., Broderick, A.E. and Chang, P. 2012. ``The Lyman-alpha forest in a blazar-heated Universe'', MNRAS, 423, 149-164
  • Chang, P., Broderick, A.E. and Pfrommer, C. 2012. ``The Cosmological Impact of Luminous TeV Blazars II: Rewriting the Thermal History of the Intergalactic Medium'', ApJ, 752, 23 (24pp)
  • Broderick, A.E., Chang, P. and Pfrommer, C. 2012. ``The Cosmological Impact of Luminous TeV Blazars I: Implications of Plasma Instabilities for the Intergalactic Magnetic Field and Extragalactic Gamma-Ray Background'', ApJ, 752, 22 (23pp)
  • Pfrommer, C., Chang, P. and Broderick, A.E. 2012. ``The Cosmological Impact of Luminous TeV Blazars III: Implications for Galaxy Clusters and the Formation of Dwarf Galaxies'', ApJ, 752, 24 (21pp)
  • Broderick, A.E., Fish, V.L., Doeleman, S.S. and Loeb, A. 2011. ``Constraining the Structure of Sagittarius A*'s Accretion Flow with Millimeter-VLBI Closure Phases'', ApJ, 738, 38 (8pp)
  • Broderick, A.E., Loeb, A. and Reid, M.J. 2011. ``Localizing Sagittarius A* and M87 on Microarcsecond Scales with Millimeter Very Long Baseline Interferometry'', ApJ, 735, 57 (18pp)
  • Broderick, A.E., Fish, V.L., Doeleman, S.S. and Loeb, A. 2011. ``Evidence for Low Black Hole Spin and Physically Motivated Accretion Models from Millimeter-VLBI Observations of Sagittarius A*'', ApJ, 735, 110 (15pp)
  • Broderick, A.E. and McKinney, J.C. 2010. ``Parsec-scale Faraday Rotation Measures from General Relativistic Magnetohydrodynamic Simulations of Active Galactic Nucleus Jets'', ApJ, 725, 750-773
  • Broderick, A.E. and Keto, E. 2010. ``The Evolution of Cloud Cores and the Formation of Stars'', ApJ, 721, 493-504
  • Broderick, A.E. and Blandford, R.D. 2010. ``Understanding the Geometry of Astrophysical Magnetic Fields'', ApJ, 718, 1085-1099
  • Fish, V.L., Doeleman, S.S., Broderick, A.E., Loeb, A. and Rogers, A.E.E. 2009. ``Detecting Changing Polarization Structures in Sagittarius A* with High Frequency VLBI'', ApJ, 706, 1353-1363
  • Broderick, A.E. and Loeb, A. 2009. ``Signatures of Relativistic Helical Motion in the Rotation Measures of Active Galactic Nucleus Jets'', ApJL, 703, L104-L108
  • Broderick, A.E., Loeb, A. and Narayan, R. 2009. ``The Event Horizon of Sagittarius A*'', ApJ, 701, 1357-1366
  • Broderick, A.E. and Loeb, A. 2009. ``Imaging the Black Hole Silhouette of M87: Implications for Jet Formation and Black Hole Spin'', ApJ, 697, 1164-1179
  • Broderick, A.E., Fish, V.L., Doeleman, S.S. and Loeb, A. 2009, ``Estimating the Parameters of Sagittarius A*'s Accretion Flow Via Millimeter VLBI'', ApJ, 697, 45-54
  • Doeleman, S.S., Fish, V.L., Broderick, A.E., Loeb, A. and Rogers, A.E.E. 2009. ``Detecting Flaring Structure in Sagittarius A* with High-Frequency VLBI'', ApJ, 695, 59-74
  • Fish, V.L., Broderick, A.E., Doeleman, S.S. and Loeb, A. 2009. ``Using Millimeter VLBI to Constrain RIAF Models of Sagittarius A*'', ApJL, 692, L14-L18
  • Reid, Mark J., Broderick, A.E., Loeb, A., Honma, M. and Brunthaler, A. 2008. ``Limits on the Position Wander of Sgr A*'', ApJ, 682, 1041-1046
  • Broderick, A.E., Narayan, R., Keto, E. and Lada, C.J. 2008. ``The Damping Rates of Embedded Oscillating Starless Cores'', ApJ, 682, 1095-1102
  • Broderick, A.E. and Narayan, R. 2008. ``Magnetic helicity and the relaxation of fossil fields'', MNRAS, 383, 943-956
  • Broderick, A.E., Keto, E., Lada, C.J. and Narayan, R. 2007. ``Oscillating Starless cores: The Nonlinear Regime'', ApJ, 671, 1832-1838
  • Broderick, A.E. and Narayan, R. 2007. ``Where are all the gravastars? Limits upon the gravastar model from accreting black holes'', CQG, 24, 659-666
  • Keto, E., Broderick, A.E., Lada, C.J. and Narayan, R. 2006. ``Oscillations of Starless Cores'', ApJ, 652, 1366-1373
  • Broderick, A.E. and Rathore, Y. 2006. ``A multidimensional, adiabatic hydrodynamics code for studying tidal excitation'', MNRAS, 372, 923-932
  • Broderick, A.E. and Loeb, A. 2006. ``Imaging optically-thin hotspots near the black hole horizon of Sgr A* at radio and near-infrared wavelengths'', MNRAS, 367, 905-916
  • Broderick, A.E. 2006. ``Radiative transfer along rays in curved space-times'', MNRAS, 366, L10-L12
  • Broderick, A.E. and Narayan, R. 2006. ``On the Nature of the Dark Mass at the Galactic Center'', ApJL, 638, L21-L24
  • Broderick, A.E. and Loeb, A. 2006. ``Frequency-dependent Shift in the Image Centroid of the Black Hole at the Galactic Center as a Test of General Relativity'', ApJL, 636, L109-L112
  • Broderick, A.E. and Loeb, A. 2005. ``Imaging bright-spots in the accretion flow near the black hole horizon of Sgr A*'', MNRAS, 363, 353-362
  • Broderick, A.E. 2005. ``Supernovae in helium star--compact object binaries: a possible gamma-ray burst mechanism'', MNRAS, 361, 955-964
  • Rathore, Y., Blandford, R. and Broderick, A.E. 2005. ``Resonant excitation of white dwarf oscillations in compact binaries --I. The no back reaction approximation'', MNRAS, 357, 834-846
  • Broderick, A.E. & Blandford, R. 2004. ``Covariant magnetoionic theory -- II. Radiative transfer'', MNRAS, 349, 994
  • Broderick, A.E. & Blandford, R. 2003. ``Covariant magnetoionic theory -- I. Ray propagation'', MNRAS, 342, 1280
  • Rathore, Y., Broderick, A.E. & Blandford, R. 2003. ``A variational formalism for tidal excitation: non-rotating, homentropic stars'', MNRAS, 339, 25
  • Broderick, A.E., Prakash, M. & Lattimer, J.M. 2002. ``Effects of strong magnetic fields in strange baryonic matter'', Phys. Lett. B, 531, 167
  • Broderick, A., Prakash, M. & Lattimer, J.M., 2000. ``The Equation of State of Neutron Star Matter in Strong Magnetic Fields'', ApJ, 537, 351
  • Broderick, A.E., Tiede, P., Pesce, D.W., Gold, R. 2021. "Measuring Spin from Relative Photon Ring Sizes", arXiv: 2105.09962
  • Tiede, P., Broderick, A.E., Palumbo, D.C.M. 2020. "Variational Image Feature Extraction for the EHT", arXiv: 2012.07889
  • Volkel, S.H., Barausse, E., Franchini, N., Broderick, A.E. 2020. "EHT tests of the strong-field regime of General Relativity", arXiv: 2011.06812
  • Tiede, P., Broderick, A.E., Shalaby, M., Pfrommer, C., Puchwein, E., Chang, P., Lamberts, A., 2017, "Constraints on the Intergalactic Magnetic Field from Bow Ties in the Gamma-ray Sky", arXiv: 1702.02586
  • Bower, G.C., Demorest, P., Braatz, J., Broderick, A., Burke-Spolaor, S., Butler, B., Chang, T., Chomiuk, L., Cordes, J., Darling, J., Eilek, J., Hallinan, G., Kanekar, N., Kramer, M., Marrone, D., Max-Moerbeck, W., Metzger, B., Morales, M., Myers, S., Osten, R., Owen, F., Rupen, M., Siemion, A., 2015. "Next Generation Very Large Array Memo No. 9 Science Working Group 4: Time Domain, Fundamental Physics, and Cosmology", arXiv: 1510.06432
  • Kamiab, F., Broderick, A.E., Afshordi, N. 2015. "The mass and radii of strongly magnetized neutron stars", arXiv: 1503.03898
  • Fish, V., Alef, W., Anderson, J., Asada, K., Baudry, A., Broderick, A., Carilli, C., Colomer, F., Conway, J., Dexter, J., Doeleman, S., Eatough, R., Falcke, H., Frey, S., Gabányi, K., Gálvan-Madrid, R., Gammie, C., Giroletti, M., Goddi, C., Gómez, J.L., Hada, K., Hecht, M., Honma, M., Humphreys, E., Impellizzeri, V., Johannsen, T., Jorstad, S., Kino, M., Körding, E., Kramer, M., Krichbaum, T., Kudryavtseva, N., Laing, R., Lazio, J., Loeb, A., Lu, R.-S., Maccarone, T., Marscher, A., Mart'i-Vidal, I., Martins, C., Matthews, L., Menten, K., Miller, J., Miller-Jones, J., Mirabel, F., Muller, S., Nagai, H., Nagar, N., Nakamura, M., Paragi, Z., Pradel, N., Psaltis, D., Ransom, S., Rodriguez, L., Rottmann, H., Rushton, A., Shen, Z.-Q., Smith, D., Stappers, B., Takahashi, R., Tarchi, A., Tilanus, R., Verbiest, J., Vlemmings, W., Walker, R.C., Wardle, J., Wiik, K., Zackrisson, E., Zensus, J.A. 2013. "High-Angular-Resolution and High-Sensitivity Science Enabled by Beamformed ALMA", arXiv: 1309.3519
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  • "Beyond the one ring: probing spacetimes with high-resolution mm-VLBI", Sixteenth Marcel Grossmann Meeting (Virtual)
  • "Unmasking black holes with the Event Horizon Telescope", 2021 CAP Virtual Congress (Virtual)
  • "Probing spacetimes with EHT and beyond", Current challenges in gravitational physics (Virtual)
  • "Seeing the Unseeable", Keynote Lake Louise Winter Institute (Lake Louise)
  • "Seeing the Unseeable", Public Lecture (Beijing)
  • "Mapping Spacetimes", Space VLBI (Charlottesville)
  • "Seeing the Unseeable", Public Lecture (Ismaili Centre, Toronto)
  • "Unmasking Black Holes with the Event Horizon Telescope", Colloquium (Queens)
  • "Seeing the Unseeable", Public Lecture (RCI, Toronto)
  • "Unmasking Black Holes with the Event Horizon Telescope", Colloquium (UVic)
  • "Unmasking Black Holes with the Event Horizon Telescope", Colloquium (SFU)
  • "Seeing the Unseeable", Public Lecture (Ismaili Centre, Vancouver)
  • "Unmasking Black Holes with the Event Horizon Telescope", Colloquium (UBC)
  • "Images from the edge of spacetime, resolving black holes", Globe and Mail Centre (Toronto)
  • "Seeing the unseeable", Ideacity (Toronto)
  • "EHT First Results:
confronting GRMHD simulations with data", Black Hole Institute Conference (Cambridge, MA)
  • "Seeing the unseeable", University of Waterloo (Waterloo)
  • "First Science Results from the EHT", APS Meeting (Denver)
  • "Mapping Spacetimes with 
Black Hole Cinema", Testing Gravity (Vancouver)
  • "Images from the edge of spacetime:
 resolving black holes", Steamworks Brewpub (Vancouver)
  • "A New Window on Black Hole Horizons: From Images to Cinema", Colloquium (Leibniz Institute for Astrophysics Potsdam)
  • "Propagation of TeV Gamma Rays in Intergalactic Space and their Consequences", TeVPA 2018 plenary talk (Berlin)
  • "Probing General Relativity with Horizon-Resolving Images of Sgr A*", COSPAR 2018 (Pasadena, CA)
  • "Black Hole Cinema: Variability on the Horizon", CITA Seminar (CITA)
  • "Probes of Gravity with Black Hole Imaging", Gravity Data Meeting (Oxford)
  • "Songs in the Night: The Birth of Gravitational Wave Astronomy", Nobel Lecture Series (University of Waterloo)
  • "A New Vista on Black Holes: Probing Astrophysical Spacetimes with the Event Horizon Telescope", 3rd Karl Schwarzschild Meeting (Frankfurt)
  • "Black Hole Cinema: Variability on the Horizon", The First Annual BHI Conference on Black Holes (Cambridge)
  • "Extracting Black Hole (Astro)physics from Imaging", CIFAR Cosmology and Gravity Program Meet- ing (Lake Louise)
  • "Probing Gravity With the Event Horizon Telescope", Gravity and Experiment (IAP)
  • "Model Comparison & Feature Extraction", EHT 2016 (Cambridge)
  • "The Current and Future View from the Edge", Astronomy Colloquium (UCLA)
  • "Implications of Existing EHT Observations for Sgr A*", Simulations and Modelling of Relativistic MHD Accretion Discs (Oxford)
  • "The Current and Future View from the Edge", Crafoord Prize Symposium in Astronomy -- Rotating black holes and their astrophysical consequences (Stockholm)
  • "Inferring Jet Physics from Event Horizon Telescope Observations of M87", M87 Workshop (Taipei)
  • "Probing the Jet of M87", CIFAR Cosmology and Gravity Meeting (Whistler)
  • "Modelling the Accretion Flow of Sgr A* on Horizon Scales", Dynamics and accretion at the Galactic Center (Aspen, CO)
  • "Images on the horizon: A view of black holes from the Event Horizon Telescope", Astrophysics Colloquium (Stanford)
  • "Images on the horizon: A view of black holes from the Event Horizon Telescope", Colloquium (University of Alberta)
  • "Images on the horizon: A view of black holes from the Event Horizon Telescope", Gravity Group Seminar (Princeton)
  • "Images on the horizon: A view of black holes from the Event Horizon Telescope", Astro Seminar (Queen's University)
  • "Images on the horizon: A view of black holes from the Event Horizon Telescope", Physics Colloquium (Royal Military College of Canada)
  • "Gravity at the Edge: Testing General Relativity with the Event Horizon Telescope", International Astronomical Union XXIX General Assembly (Honolulu)
  • "Plasma Instabilities and the Thermal History of the Universe", International Astronomical Union XXIX General Assembly (Honolului)
  • "Digging in the Dirty Data: Status and Future of the Event Horizon Telescope", eXtreme Gravity Institute Workshop (Montana State University)
  • "Imaging Black Holes", 18th Eastern Gravity Meeting 2015 (Rochester Institute of Technology)
  • "Revealing Black Holes with the Event Horizon Telescope", CASCA 2015 (Hamilton, ON)
  • "Black Holes According to the EHT", CIFAR Cosmology and Gravity Meeting (Banff)
  • "Digging for Gravitational Diamonds in the astrophysical Dirt: Measuring the Shape of Space with Radio Observations", Compact Objects as Astrophysical and Gravitational Probes (Lorentz Center, Leiden)
  • "Near Horizon Effects", Testing Gravity (Simon Fraser University)
  • "Testing Black Hole Physics with the Event Horizon Telescope", 2014 CAP Congress (Sudbury, ON)
  • "How TeV Blazars Might Rewrite the Thermal History of the Universe: A Story about Non-Local AGN Feedback", CITA Seminar (Toronto)
  • "Astrophysics Near the Event Horizon - Theory and Simulations", The Strong Gravity Regime of Black Holes and Neutron Stars - 558th WE-Heraeus-Seminar (Bad Honnef, Germany)
  • "Imaging supermassive Black Holes on Horizon Scales", Physics Colloquium (Penn State)
  • "How TeV Blazars Might Rewrite the Thermal History of the Universe: A Story about Non-Local AGN Feedback", Cosmology Seminar (Penn State)
  • "Modeling Accretion and Outflows on Horizon Scales for the Event Horizon Telescope", International Astronomical Union Symposium 303 (Santa Fe)
  • "Resolving Black Holes with the Event Horizon Telescope", GR20/Amaldi10 (Warsaw)
  • "Black Hole Imaging Horizons", Wunch Talk (Princeton)
  • "Imaging Supermassive Black Holes on Horizon Scales", Colloquium (Western University)
  • "VLBI observations of jets in M87", Fermi Bubbles Workshop (KIPAC)
  • "Imaging Supermassive Black Holes on Horizon Scales", Joint Astronomical Colloquium (ZfA, HITS, MPA; Heidelberg)
  • "Imaging Supermassive Black Holes on Horizon Scales", Astro Seminar (Michigan State University)
  • "Imaging Supermassive Black Holes on Horizon Scales", Colloquium (Simon Fraser University)
  • "Imaging Supermassive Black Holes on Horizon Scales", Colloquium (University of British Columbia)
  • "Imaging Supermassive Black Holes on Horizon Scales", Colloquium (University of Victoria)
  • "Imaging Supermassive Black Holes on Horizon Scales", Colloquium (Rochester University)
  • "Imaging Supermassive Black Holes on Horizon Scales", Colloquium (McMaster University)
  • "Modeling M87 on Horizon Scales for the EHT", Workshop on the Greenland telescope (Cambridge, MA)
  • "Testing GR with Imaging of SMBHs, part deux", Testing General Relativity with Astrophysical Systems (Cambridge)
  • "Early Results from the Event Horizon Telescope: Shedding light on the gastronomy and hair styles of black holes", Theoretical Physics Workshop (Western)
  • "Imaging Black Holes", APS Invited Session: Homing in on the Galactic Center Black Hole (Atlanta)
  • "Resolving Horizon Physics with Millimetre-wave VLBI", The Future of mm/submm Astronomy in Canada (Dunlap Institute, Toronto)
  • "Doughnuts, pancakes, and other black hole breakfast items: Constraining low-luminosity accretion physics with the EHT", Bringing Black Holes into Focus (Tucson)
  • "The Dog Who Didn't Bark: Missing Gamma Rays and the Cosmological Impact of Plasma Instabilities", Astro Seminar (Waterloo)
  • ``Imaging Black Hole Horizons with the Event Horizon Telescope'', The Central Kiloparsec in Galactic Nuclei: Astronomy at High Angular Resolution 2011 (Bad Honnef)
  • ``Imaging Black Hole Horizons: Probing the Nature and Habits of Black Holes'', JSI Seminar (University of Maryland)
  • ``Probing the Gastronomy of Supermassive Black Holes with High and Ultra-High Resolution Imaging'', Physics & Astronomy Colloquium (University of Waterloo)
  • ``Imaging Black Hole Horizons: Probing the Nature and Habits of Black Holes'', Tapir Seminar (Caltech)
  • ``The Event Horizon Telescope: Imaging Black Hole Horizons'', Physics \& Astronomy Colloquium (University of Pittsburgh)
  • ``The Life and Times of Black Holes and Other Stories: Research Topics in Compact Object Astrophysics'', Astrophysics Lunch Talk (University of Pittsburgh)
  • ``The Hairstyles of Compact Objects'', Theory Meets Data Analysis at Comparable and Extreme Mass Ratios, CAPRA+NRDA Meeting (Perimeter Institute)
  • ``Measuring the Geometry of AGN Core Magnetic Fields'', Rotation Measure Analysis of Magnetic Fields in and around Radio Galaxies (Riccione, Italy)
  • ``Staring into the Abyss: Imaging Black Hole Horizons'', Special SAO Colloquium (CfA)
  • ``Imaging Black Hole Horizons'', Formation and Evolution of Black Holes, 2010 Winter Conference on Astrophysics (Aspen Center for Physics)
  • ``Staring into the Abyss: Imaging Black Hole Horizons'', Joint Astrophysics Colloquium (McGill University)
  • ``Nature of the black hole in the center of the Milky Way'', APS Invited Session: Probing strong-field gravity with observations of the galactic center black hole, (Washington D.C.)
  • ``Staring into the Abyss: Imaging Black Hole Horizons'', Astro Seminar (NYU)
  • ``To the Edge and Back: Directly Imaging the Horizon of a Black Hole'', Royal Astronomical Society of Canada
  • ``Staring Into the Abyss: Directly Imaging Black Hole Event Horizons'', Physics Colloquium (University of Guelph)
  • ``Imaging Nearby Black Holes: Providing a window on accretion, jet formation and general relativity'', Astronomy Colloquium (Columbia University)
  • ``Directly Imaging the Horizons of Black Holes'', Astrophysics Colloquium (MIT)
  • ``A New Window on Jet Formation: Millimeter & Submillimeter VLBI'', 213th AAS Meeting (Long Beach)
  • ``The Nature of Sagittarius A*'', AAS Special Session: Getting to the Event Horizon: Sgr A* (Long Beach)
  • ``Imaging Horizons'', Astrophysics with Radio and Gravitational-Wave Observatories (Charlottesville)
  • ``Imaging Black Hole Horizons'', Special Colloquium (Northwestern Univsersity)
  • ``On the Horizon: Imaging Nearby Black Holes'', ACKS Seminar (Kavli Institute for Particle Astrophysics and Cosmology, Stanford)
  • ``On the Horizon: Imaging Nearby Black Holes'', INPP+API Seminar (Ohio University)
  • ``At the horizon: Imaging black holes and testing general relativity'', Astronomy Colloquium (University of Chicago)
  • ``At the horizon: Imaging black holes and testing general relativity'', Astronomy Colloquium (University of Illinois)
  • ``Testing the Kerr Metric: Confronting Strong Field Relativity with Observations'', Physics Colloquium (Georgia Tech)
  • ``Imaging the Central Black Hole in the Milky Way'', Rethinking Gravity: From the Planck scale to the size of the Universe (Tuscon)
  • `Microarcsecond imaging of Sgr A*: A way to test the Kerr metric'', Special Theoretical Astrophysics Seminar (Northwestern University)
  • ``Microarcsecond imaging of Sgr A*: A way to test the Kerr metric'', CITA Seminar (Canadian Institute for Theoretical Astrophysics)
  • ``Testing the Kerr Metric with Micro-Arcsecond Imaging of Sgr A*'', XXIII Texas Symposium on Relativistic Astrophysics (Melbourne)
  • ``Microarcsecond Imaging of Sgr A* and Testing General Relativity'', RAL Seminar (UC Berkeley)
  • ``Radio Imaging of Sgr A*'', New Results on the Galactic Centre (XXVI IAU General Assembly, Prague)
  • ``Testing General Relativity with Images of Sgr A*'', The History of Nuclear Black Holes in Galaxies (Cambridge)
  • ``The possibility of testing general relativity with high-resolution imaging of Sgr A*'', Galactic Center Workshop 2006 (Bad Honnef)
  • ``Circular Polarisation from Tangled Magnetic Fields'', Institute of Astronomy Seminar (Cambridge University)
  • ``Polarization Effects Near Black Holes'', X-ray Polarimetry Workshop (SLAC)
  • ``Covariant Magnetoionic Theory (CP Production in BH Accretion Flows)'', TAC Seminar (UC Berkeley)
  • ``Circular Polarization in Black Hole Accretion Flows (The Role of Refraction)'', AAS Meeting (Atlanta)
  • ``General Relativistic Magnetoionic Theory'', Circular Polarisation from Relativistic Jet Sources (University of Amsterdam)
  • ``General Relativistic Magnetoionic Theory and Low Luminosity AGN'', Theoretical Astrophysics in Southern California (California Institute of Technology)
  • "Seeing the unseeable", Einstein+ keynote
  • PIRSA:18100065, Avery Broderick: Perimeter Institute and University of Waterloo, 2018-10-03, Perimeter Public Lectures
  • PIRSA:18050029, Superradiant instabilities and rotating black holes, 2018-05-09, Searching for New Particles with Black Hole Superradiance
  • PIRSA:18050042, Black Hole Cinema, 2018-05-07, PI-NRC Meeting
  • PIRSA:17110102, What does a quantum black hole look like to the Event Horizon Telescope?, 2017-11-10, Quantum Black Holes in the Sky?
  • PIRSA:16070058, EPlus Keynote: Avery Broderick, 2016-07-03,
  • PIRSA:16030107, Gamma-ray Halos, 2016-03-16, Feedback over 44 Orders of Magnitude: From Gamma-rays to the Universe
  • PIRSA:15060021, Photons from the Edge: Revealing Black Holes with the Event Horizon Telescope, 2015-06-23, Convergence
  • "Dispatches from the front: A view of Sgr A* with the EHT", PI-CITA day
  • PIRSA:14120009, Hollywood meets Reality at Perimeter: Black Holes and all that, 2014-12-05, Universe in 60 Minutes
  • PIRSA:14120010, Event Horizon Telescope Talk, 2014-12-05, Universe in 60 Minutes
  • PIRSA:14110095, Science Wrap Discussion, 2014-11-12, EHT 2014
  • PIRSA:14110082, EHT Constraints on Jet Launching in M87, 2014-11-11, EHT 2014
  • PIRSA:14110073, Discussion 2, 2014-11-10, EHT 2014
  • PIRSA:13110064, Staring into the Abyss, 2013-11-06, Perimeter Public Lectures
  • PIRSA:12100094, Quantum Gravity Effects in Black Holes and Gravitational Waves, 2012-10-23, Experimental Search for Quantum Gravity 2012
  • PIRSA:12020127, The Other 99%: The Life and Times of the Black Hole Next Door, 2012-02-15, Colloquium
  • PIRSA:12020146, The Tyranny of Scale: Making Simple Problems Hard, 2012-02-09, Workshop: Computational Methods at Perimeter
  • PIRSA:11110126, Researcher Presentation: Avery Broderick, 2011-11-23, 11/12 PSI - Researcher Presentations
  • PIRSA:11100105, Portrait of a Black Hole, 2011-10-14, Conceptual Gems of Theoretical Physics
  • PIRSA:11100082, Rewriting the Thermal History of the Universe: The Cosmological Implications of TeV Blazars, 2011-10-11, Cosmology & Gravitation
  • PIRSA:11010115, The Event Horizon Telescope: Imaging Black Hole Horizons, 2011-01-31, Cosmology & Gravitation
  • PIRSA:10060088, The Hairstyles of Compact Objects, 2010-06-26, Theory Meets Data Analysis at Comparable and Extreme Mass Ratios