Will Percival

Will Percival profile picture
University of Waterloo
Research Associate Faculty
Areas of research:
Cosmology
I work in the field of cosmology, using observations to test theoretical models. I focus particularly on galaxy surveys, using the positions of galaxies to measure the cosmological expansion rate and growth of cosmological structure. I use these to constrain Dark Energy, the mechanism responsible for the present-day acceleration in the expansion rate.
  • 2005-2018 Institute of Cosmology & Gravitation, University of Portsmouth, Professor of Cosmology
  • DES Collaboration, (161 co-authors including W.J. Percival), Dark Energy Survey Year 3 Results: Constraints on extensions to CDM with weak lensing and galaxy clustering, 2022, [arXiv: 2207.05766]
  • Z.Zhai, W.J.Percival, Sample Variance for Supernovae Distance Measurements and the Hubble tension, 2022, PRD submitted, [arXiv: 2207.02373]
  • E. Massara, W.J. Percival, N. Dalal, S. Nadathur, S. Radinovic ́, H.A. Winther, A. Woodfinden, Velocity profiles of matter and biased tracers around voids, 2022, MNRAS submitted, [arXiv: 2206.14120]
  • R. Saglia, (184 co-authors including W.J. Percival), Euclid preparation: XX. The Complete Calibra- tion of the Color-Redshift Relation survey: LBT observations and data release, 2022, A&A submitted, [arXiv: 2206.01620]
  • M.Bonici, (130 co-authors including W.J.Percival), Euclid:Forecasts from the void-lensing cross-correlation, 2022, [arXiv: 2206.14211]
  • A. Woodfinden, S. Nadathur, W.J. Percival, S. Radinovic, E. Massara, H.A. Winther, Measurements of cosmic expansion and growth rate of structure from voids in the Sloan Digital Sky Survey between redshift 0.07 and 1.0, 2022, MNRAS submitted, [arXiv: 2205.06258]
  • B. Abareshi, (266 co-authors including W.J. Percival), Overview of the Instrumentation for the Dark En- ergy Spectroscopic Instrument, 2022, AJ submitted, [arXiv: 2205.10939]
  • J.H. Silber, (99 co-authors including W.J. Percival), The Robotic Multi-Object Focal Plane System of the Dark Energy Spectroscopic Instrument (DESI), 2022, [arXiv: 2205.09014]
  • Euclid Collaboration, (222 co-authors including W.J. Percival), Euclid preparation. XVIII. The NISP pho- tometric system, 2022, A&A 662, A92, [arXiv: 2203.01650]
  • Y. Wang, G.-B. Zhao, K. Koyama, W.J. Percival, R. Takahashi, C. Hikage, H. Gil-Mar ́ın, C. Hahn, R. Zhao, W. Zhang, X. Mu, Y. Yu, H.-M. Zhu, F. Ge, Extracting high-order cosmological information in galaxy surveys with power spectra, 2022, Nature astronomy submitted, [arXiv: 2202.05248]
  • R. Neveux, E. Burtin, V. Ruhlmann-Kleider, A. de Mattia, A. Semenaite, K.S. Dawson, A. de la Macorra, W.J. Percival, G. Rossi, D.P. Schneider, G.-B. Zhao, Combined full shape analysis of BOSS galaxies and eBOSS quasars using an iterative emulator, 2022, [arXiv: 2201.04679]
  • Abdurro"uf, (339 co-authors including W.J. Percival), The Seventeenth Data Release of the Sloan Dig- ital Sky Surveys: Complete Release of MaNGA, MaStar and APOGEE-2 Data, 2022, ApJSS 259, 35 [arXiv: 2112.02026]
  • F. Lepori, (185 co-authors including W.J. Percival), Euclid preparation: XIX. Impact of magnification on photometric galaxy clustering, 2022, A&A 622, A93, [arXiv: 2110.05435]
  • C. Zhao, (18 co-authors including W.J. Percival), The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological implications from multi-tracer BAO analysis with galaxies and voids, 2022, MNRAS 511, 5492, [arXiv: 2110.03824]
  • S. Nesseris, (114 co-authors including W.J. Percival), Euclid: Forecast constraints on consistency tests of the ΛCDM model , 2022, A&A 660, A67, [arXiv: 2110.11421]
  • M.S. Cagliari, (111 co-authors including W.J. Percival), Euclid: Constraining ensemble photometric red- shift distributions with stacked spectroscopy, 2022, A&A 660, A9, [arXiv: 2109.07303]
  • F.G. Mohammad, W.J. Percival, Creating Jackknife and Bootstrap estimates of the covariance matrix for the two-point correlation functions, 2022, MNRAS 514, 1289, [arXiv: 2109.07071]
  • W.J. Percival, Oliver Friedrich, Elena Sellentin, Alan Heavens, Matching Bayesian and frequentist coverage probabilities when using an approximate data covariance matrix, 2022, MNRAS 510, 3207, [arXiv: 2108.10402]
  • N. Hamaus, (149 co-authors including W.J. Percival), Euclid: Forecasts from redshift-space distortions and the Alcock-Paczynski test with cosmic voids, 2022, A&A 658, A20, [arXiv: 2108.10347]
  • A.S. Borlaff, (182 co-authors including W.J. Percival), Euclid preparation: XVI. Exploring the ultra low- surface brightness Universe with Euclid/VIS, 2022, A&A 657, A92, [arXiv: 2108.10321]
  • R. Scaramella, (240 co-authors including W.J. Percival), Euclid preparation: I. The Euclid Wide Survey, 2022, A&A 662, A112, [arXiv: 2108.01201]
  • PIRSA:21040037, Mapping the Universe with eBOSS, 2021-04-07, Perimeter Public Lectures
  • PIRSA:20070028, Cosmology from the SDSS, 2020-07-28, Cosmology & Gravitation
  • PIRSA:20020077, The future of spectroscopic galaxy surveys , 2020-02-21, Centre for the Universe - Waterloo Centre for Astrophysics Day
  • Organiser for the meeting ``Wide-Field Astronomy in Canada'', at PI, October 2018.