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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

The Atacama Cosmology Telescope: High-redshift measurement of structure growth from the cross-correlation of Quaia quasars and CMB lensing from ACT DR6 and $\textit{Planck}$ 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 Sifon, AV Engelen, EJ Wollack
(2025)
(link to publication)
Unified and consistent structure growth measurements from joint ACT, SPT and \textit{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.
(2025)
(link to publication)
Extracting cosmological information from the abundance of galaxy clusters with simulation-based inference
Í Zubeldia, B Bolliet, A Challinor, W Handley
(2025)
(doi: 10.48550/arxiv.2504.10230)
The Simons Observatory: Science Goals and Forecasts for the Enhanced Large Aperture Telescope
TSO Collaboration, 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 et al.
(2025)
(link to publication)
Filtering in CMB data analysis with application to ACT DR4 and Planck observations
E Rosenberg, S Gratton, A Challinor
(2024)
(link to publication)
Optimizing the Evolution of Perturbations in the $Λ$CDM Universe
N Choustikov, Z Vlah, A Challinor
– Journal of Cosmology and Astroparticle Physics
(2024)
012
(doi: 10.1088/1475-7516/2024/11/012)
The Simons Observatory: Combining cross-spectral foreground cleaning with multitracer B-mode delensing for improved constraints on inflation
E Hertig, K Wolz, T Namikawa, AB Lizancos, S Azzoni, I Abril-Cabezas, D Alonso, C Baccigalupi, E Calabrese, A Challinor, J Errard, G Fabbian, C Hervías-Caimapo, B Jost, N Krachmalnicoff, AI Lonappan, M Morshed, L Pagano, B Sherwin
– Physical Review D
(2024)
110,
043532
(doi: 10.1103/physrevd.110.043532)
LiteBIRD science goals and forecasts: a full-sky measurement of gravitational lensing of the CMB
AI Lonappan, T Namikawa, G Piccirilli, P Diego-Palazuelos, M Ruiz-Granda, M Migliaccio, C Baccigalupi, N Bartolo, D Beck, K Benabed, A Challinor, J Errard, S Farrens, A Gruppuso, N Krachmalnicoff, E Martínez-González, V Pettorino, B Sherwin, J Starck, P Vielva, R Akizawa, A Anand, J Aumont, R Aurlien, S Azzoni et al.
– Journal of Cosmology and Astroparticle Physics
(2024)
2024,
009
(doi: 10.1088/1475-7516/2024/06/009)
LiteBIRD science goals and forecasts: improving sensitivity to inflationary gravitational waves with multitracer delensing
T Namikawa, AI Lonappan, C Baccigalupi, N Bartolo, D Beck, K Benabed, A Challinor, P Diego-Palazuelos, J Errard, S Farrens, A Gruppuso, N Krachmalnicoff, M Migliaccio, E Martínez-González, V Pettorino, G Piccirilli, M Ruiz-Granda, B Sherwin, J Starck, P Vielva, R Akizawa, A Anand, J Aumont, R Aurlien, S Azzoni et al.
– Journal of Cosmology and Astroparticle Physics
(2024)
2024,
010
(doi: 10.1088/1475-7516/2024/06/010)
The Simons Observatory: Combining delensing and foreground cleaning for improved constraints on inflation
E Hertig, K Wolz, T Namikawa, AB Lizancos, S Azzoni, A Challinor
(2024)
(link to publication)
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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