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Faculty of Mathematics

 

Professor Anthony David Challinor

Career

  • 2017-present Professor of Cosmology and Astrophysics
    • Deputy Director, Institute of Astromony
    • Deputy Director, Kavli Institute for Cosmology, Cambridge
  • 2011-2017 Reader in Astrophysics and Cosmology
  • 2006 -2011 University Lecturer, Institute of Astronomy and DAMTP
  • 2002 -2007 Royal Society University Research Fellow
  • 2000 -2002 PPARC Postdoctoral Research Fellow
  • 1998 -present Fellow, Queens' College

Research

I have a range of research interests in physical and theoretical cosmology, mostly centred on the issue of testing the cosmological model and the origin of cosmic structure with cosmological observations. A particular focus is the the origin, interpretation, and measurement of temperature anisotropies and polarization in the CMB. I am a Core Team member of the Planck High-Frequency Instrument and a member of the Simons Observatory with particular interests in lensing of the CMB, constraining the key cosmological parameters and searching for B-mode polarization induced by gravitational waves from the early universe.

Selected Publications

Publications list on ADS

 

Publications

Atacama Cosmology Telescope: B -mode delensing with DR6 data and external tracers of large-scale structure
Anonymous
– Physical Review D
(2026)
113,
123530
(doi: 10.1103/ztry-pnlx)
The Simons Observatory: forecasted constraints on primordial gravitational waves with the expanded array of Small Aperture Telescopes
I Abril-Cabezas, S Adachi, P Ade, AE Adler, P Agrawal, J Aguirre, S Aiola, T Alford, A Ali, D Alonso, MA Alvarez, R An, M Aravena, K Arnold, P Ashton, F Astori, Z Atkins, J Austermann, S Azzoni, C Baccigalupi, D Baker, R Balafendiev, AB Lizancos, D Barron, P Barry et al.
– Journal of Cosmology and Astroparticle Physics
(2026)
2026,
051
(doi: 10.1088/1475-7516/2026/04/051)
Unified and Consistent Structure Growth Measurements from Joint ACT, SPT, and Planck CMB Lensing.
FJ Qu, F Ge, WLK Wu, I Abril-Cabezas, MS Madhavacheril, M Millea, Z Ahmed, E Anderes, AJ Anderson, B Ansarinejad, M Archipley, Z Atkins, L Balkenhol, N Battaglia, K Benabed, AN Bender, BA Benson, F Bianchini, LE Bleem, B Bolliet, JR Bond, FR Bouchet, L Bryant, E Calabrese, E Camphuis et al.
– Phys Rev Lett
(2026)
136,
021001
(doi: 10.1103/k5yr-3h6d)
The Atacama Cosmology Telescope: high-redshift measurement of structure growth from the cross-correlation of Quaia quasars and CMB lensing from ACT DR6 and Planck PR4
CE Villagra, G Farren, G Fabbian, B Bolliet, I Abril-Cabezas, D Alonso, A Challinor, J Dunkley, J Kim, N MacCrann, F McCarthy, K Moodley, FJ Qu, B Sherwin, C Sifón, A van Engelen, EJ Wollack
– Journal of Cosmology and Astroparticle Physics
(2025)
2025,
033
(doi: 10.1088/1475-7516/2025/12/033)
An iterative CMB lensing estimator minimizing instrumental noise bias
L Legrand, B Sherwin, A Challinor, J Carron, GS Farren
– Physical Review D
(2025)
112,
103530
(doi: 10.1103/8kt3-d8z6)
The Atacama Cosmology Telescope: A demonstration of CMB lensing measurement from daytime data
I Abril-Cabezas, FJ Qu, J Kim, MS Madhavacheril, K Perez-Sarmiento, Z Atkins, E Calabrese, A Challinor, MJ Devlin, AJ Duivenvoorden, J Dunkley, AV Engelen, S Ferraro, E Finson, C Hervías-Caimapo, M Hilton, A Kosowsky, A Kusiak, T Louis, N MacCrann, K Moodley, T Namikawa, S Naess, LA Page, AL Posta et al.
(2025)
(link to publication)
A halo model of extragalactic contamination to CMB lensing, delensing, and cross-correlations
AB Lizancos, W Coulton, A Challinor, BD Sherwin, Y Mehta
– Journal of Cosmology and Astroparticle Physics
(2025)
2025,
031
(doi: 10.1088/1475-7516/2025/11/031)
Extracting cosmological information from the abundance of galaxy clusters with simulation-based inference
Í Zubeldia, B Bolliet, A Challinor, W Handley
– Physical Review D
(2025)
112,
083536
(doi: 10.1103/drn7-ggqk)
The Simons Observatory: science goals and forecasts for the enhanced Large Aperture Telescope
M Abitbol, I Abril-Cabezas, S Adachi, P Ade, AE Adler, P Agrawal, J Aguirre, Z Ahmed, S Aiola, T Alford, A Ali, D Alonso, MA Alvarez, R An, K Arnold, P Ashton, Z Atkins, J Austermann, S Azzoni, C Baccigalupi, AB Lizancos, D Barron, P Barry, J Bartlett, N Battaglia et al.
– Journal of Cosmology and Astroparticle Physics
(2025)
2025,
034
(doi: 10.1088/1475-7516/2025/08/034)
Filtering in CMB data analysis with application to ACT DR4 and Planck observations
E Rosenberg, S Gratton, A Challinor
– Physical Review D
(2025)
112,
023534
(doi: 10.1103/rvhm-fsdc)
  • 1 of 37
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Research Group

Relativity and Gravitation

Email

A.D.Challinor@ast.cam.ac.uk

Room

B2.08

Telephone

01223 764341

Personal homepage

http://www.damtp.cam.ac.uk/user/gr/about/members/challinor.html

Study at Cambridge

About the University

Research at Cambridge