Education
- PhD, 2016, Stony Brook University
- BA (Aff.), 2011, University of Cambridge
- BSc. (Hons.), 2009, University of Delhi
Research Interests
I am a theoretical, computational and data-oriented cosmologist. My primary interests are in understanding the initial conditions, evolution and composition of the universe as a whole, including its Dark components and neutrinos. I work very closely with data and have a keen interest in developing principled approaches to statistical analysis of data from cosmic microwave background (CMB) and large-scale structure surveys. These days, together with my collaborators, I spend a good fraction of my time analyzing and extracting science from the Atacama Cosmology Telescope (ACT) using pipelines we're building for the upcoming Simons Observatory.
Courses Taught
- ASTR 0001 “A Survey of the Universe”: introductory astronomy for non-
majors, (Spring 2023 + Spring 2024)
- PHYS 5533 “Topics in Data-Oriented Cosmology”: graduate course in
cosmology, (Fall 2023), University of Pennsylvania
Selected Publications
- The Atacama Cosmology Telescope: DR6 Power Spectra, Likelihoods and LCDM Parameters,
T. Louis, A. La Posta, Z. Atkins, H. T. Jense et al ACT (incl. MS Madhavacheril), 03/2025, arxiv:2503.14452 - The Simons Observatory: Science Goals and Forecasts for the Enhanced Large Aperture Telescope,
M. Abitbol et al Simons Observatory collaboration (incl. MS Madhavacheril), 03/2025, arxiv:2503.00636, submitted to JCAP - The Atacama Cosmology Telescope: DR6 Constraints on Extended Cosmological Models,
E. Calabrese, J. C. Hill, H. T. Jense, A. La Posta et al ACT (incl. MS Madhavacheril), 03/2025, arxiv:2503.14454 - Neutrino Mass Constraints from kSZ Tomography,
A. Tishue, S. Hotinli, P. Adshead, E. Kovetz, MS Madhavacheril, 02/2025, arxiv:2502.05260, submitted to PRD - Reconstructing the shape of the non-linear matter power spectrum using CMB lensing and cosmic shear,
K. Perez Sarmiento, A. Lague, MS Madhavacheril, B. Jain, B. Sherwin , 02/2025, arxiv:2502.06687, submitted to PRL - Constraints on local primordial non-Gaussianity with 3d Velocity Reconstruction from the Kinetic Sunyaev-Zeldovich Effect,
A. Lague, MS Madhavacheril et al, 11/2024, arxiv:2411.08240, to appear in PRL, - Assessing the growth of structure over cosmic time with CMB lensing,
MS Madhavacheril, 11/2024, arxiv:2411.08152, Phil. Trans. Roy. Soc. A, Volume 383, Issue 2290, 2025 - Cosmological limits on the neutrino mass sum for beyond-LCDM models
H. Shao, J. Givans, J. Dunkley, MS Madhavacheril et al, 09/2024, arxiv:2409.02295, submitted to PRD - Constraints on Dark Matter-Dark Energy Scattering from ACT DR6 CMB Lensing
A. Lague, F. McCarthy, MS Madhavacheril, J. C. Hill, F. J. Qu, 02/2024, arxiv:2402.08149, submitted to PRD - Cosmological constraints from the tomography of DES-Y3 galaxies with CMB lensing from ACT DR4
G. Marques, MS Madhavacheril et al ACT, 07/2023, arxiv:2306.17268, JCAP01(2024)033 - The Atacama Cosmology Telescope: High-resolution component-separated maps across one-third of the sky
W. R. Coulton, MS Madhavacheril, A. J. Duivenvoorden, J. Colin Hill et al ACT, 07/2023, arxiv:2307.01258, Phys. Rev. D 109, 063530 - The Atacama Cosmology Telescope: DR6 Gravitational Lensing Map and Cosmological Parameters
MS Madhavacheril, F. J. Qu, B. D. Sherwin, N. MacCrann, Y. Li et al ACT, 04/2023, arxiv:2304.05203, ApJ 962 113 - The Atacama Cosmology Telescope: A Measurement of the DR6 CMB Lensing Power Spectrum and its Implications for Structure Growth
F. J. Qu, B. D. Sherwin, MS Madhavacheril, D. Han, K. T. Crowley et al ACT, 04/2023, arxiv:2304.05202, ApJ 962 112 - The Atacama Cosmology Telescope: Mitigating the impact of extragalactic foregrounds for the DR6 CMB lensing analysis
N. MacCrann, B. D. Sherwin, F. J. Qu, T. Namikawa, MS Madhavacheril, 04/2023, arxiv:2304.05196, accepted, to appear in ApJ
CV (url)