Sayan Saha

Postdoctoral Research Associate, Northeastern University

sayan_profile_pic.jpg

College of Science

Northeastern University

360 Huntington Ave

Boston, MA 02115, USA

I am an observational astrophysicist specializing in weak gravitational lensing and galaxy cluster astrophysics. As a postdoctoral researcher, I have been working on weak-lensing systematics for the first-of-its-kind balloon-borne imaging telescope, SuperBIT. I am currently working with my postdoctoral advisor, Prof. Jacqueline McCleary.

Before joining Northeastern University, I completed my PhD at the Indian Institute of Science Education and Research (IISER), Pune, under the guidance of Prof. Tarun Souradeep, where I mostly worked on studing violations of statistical isotropy in the Cosmic Microwave Background (CMB) data. During my PhD, I was a Swiss Government Excellence Scholarship (2022–23) at the University of Geneva, working with Prof. Julien Carron on maximum a posteriori (MAP) methods for measuring galaxy cluster masses using CMB gravitational lensing. My PhD thesis can be found here.

selected publications

  1. ApJ (submitted)
    Lensing in the Blue III: Weak Lensing Shape Catalogs of 30 Merging Galaxy Clusters
    S. Saha, J. McCleary, and others
    Submitted to ApJ, 2026
    arXiv Bib
  2. JCAP
    Cluster profiles from beyond-the-QE CMB lensing mass maps
    S. Saha, L. Legrand, and J. Carron
    JCAP, 2024
    arXiv Bib HTML
  3. JCAP
    Bayesian estimation of our local motion from the Planck-2018 CMB temperature map
    S. Saha, S. Shaikh, S. Mukherjee, and 2 more authors
    JCAP, 2021
    arXiv Bib HTML