Mathew Madhavacheril

Mathew Madhavacheril
Standing Faculty

Assistant Professor


Research Areas: Cosmology, Astrophysics


DRL 4N39

  • 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.


Selected Publications
  •  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, submitted to JCAP

  • 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, submitted to PRD

  • 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, accepted, to appear in ApJ 

  • 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, submitted to ApJ

  • 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 Ap

  • The Atacama Cosmology Telescope: Map-Based Noise Simulations for DR6
    Z. Atkins et al ACT (incl. MS Madhavacheril), 03/2023, arxiv:2303.04180, submitted to JCAP

  • High-accuracy emulators for observables in LCDM and extended cosmologies
    B. Bolliet, A. Spurio Mancini, J. Hill, MS Madhavacheril et al, 03/2023, arxiv:2303.01591, pre-print

  • Constraints on primordial non-Gaussianity from halo bias measured through CMB lensing cross-correlations,
    F. McCarthy, MS Madhavacheril, A. Maniyar, 10/2022, arxiv:2210.01049

  • De-kSZing the cosmic microwave background with surveys of large-scale structure,
    S. Foreman, S. Hotinli, MS Madhavacheril, A. van Engelen, C. Kreisch, 09/2022, arxiv:2209.03973

  • Probing early structure and model-independent neutrino mass with high-redshift CMB lensing mass maps,
    F. J. Qu, B. D. Sherwin, O. Darwish, T. Namikawa, MS Madhavacheril, 08/2022, arxiv:2208.04253

  • The Bias to Cosmic Microwave Background Lensing Reconstruction from the Kinematic Sunyaev-Zel’dovich Effect at Reionization,
    H. Cai, MS Madhavacheril, J. C. Hill, A. Kosowsky, 11/2021, arxiv:2111.01944, Phys. Rev. D 105, 043516

  • Simulated catalogs and maps of radio galaxies at millimeter wavelengths in Websky,
    Z. Li, G. Puglisi, MS Madhavacheril, M. Alvarez, 10/2021, arxiv:2110.15357, JCAP 08 (2022) 029

  • Cosmology with the moving lens effect,
    S. C. Hotinli, K. M. Smith, MS Madhavacheril, M. Kamionkowski, 08/2021, arxiv:2108.02207, Phys. Rev. D 104, 083529

  • A high-resolution view of the filament of gas between Abell 399 and Abell 401 from the Atacama Cosmology Telescope and MUSTANG-2,
    A. Hincks, F. Radiconi, C. Romero, MS Madhavacheril et al. ACT and MUSTANG-2 collaborations, 07/2021, arxiv:2107.04611, MNRAS, Volume 510, Issue 3

  • Superclustering with the Atacama Cosmology Telescope and Dark Energy Survey: I. Evidence for thermal energy anisotropy using oriented stacking
    M. Lokken, R. Hlozek, A. van Engelen, MS Madhavacheril et al. ACT and DES collaborations, 07/2021, arxiv:2107.05523, ApJ 933 134

  • Baryonic feedback biases on fundamental physics from lensed CMB power spectra,
    F. McCarthy, J. C. Hill, MS Madhavacheril, 03/2021, arxiv:2103.05582, Phys. Rev. D 105, 023517

  • Quadratic estimators for CMB weak lensing,
    A. Maniyar, Y. Ali-Haimoud, J. Carron, A. Lewis, MS Madhavacheril, 01/2021, arxiv:2101.12193, Phys. Rev. D 103, 083524 (2021)

  • CMB lensing power spectrum estimation without instrument noise bias,
    MS Madhavacheril, K. Smith, B. Sherwin, S. Naess, 11/2020, arxiv:2011.02475, JCAP, Volume 2021, 028

  • Improving models of the cosmic infrared background using CMB lensing mass maps,
    F. McCarthy, MS Madhavacheril, 11/2020, arxiv:2010.16405, Phys. Rev. D 103, 103515 (2021)

CV (url)