Chandra Shekhar Saraf

Chandra Shekhar Saraf's photo

Degree: Master degree

Division: Astrophysics II (Warsaw)

ORCID: 0000-0002-5149-4042

Office: 6/7



Private e-mail:

Chandra Shekhar Saraf is a Ph.D. candidate at the Nicolaus Copernicus Astronomical Center (CAMK) in Warsaw.

His Ph.D. thesis is supervised by Prof. Paweł Bielewicz from NCBJ (National Centre for Nuclear Research).

In his thesis he focuses on the role of various systematics in testing different cosmological models using cross-correlation between Cosmic Microwave Background (CMB) lensing and tracers of large-scale structures, like galaxies and quasars.

Chandra has been participating in a few research projects:

  • in his first project, he worked on cross-correlation of between Planck CMB lensing potential and photometric galaxy catalogues from the Herschel Extragalactic Legacy Project, to test the validity of ΛCDM model,

  • at present he is studying the impact of different systematics on the statistics used to test cosmological models through Monte Carlo simulations. This project is a forecast for the cross-correlation studies that will be done with upcoming galaxy surveys and CMB experiments. This project is supervised primarily by Prof. Pawel Bielewicz,

  • currently, he is also involved in making analytical calculations of moments of the pairwise velocity distribution of galaxies in Eulerian Perturbation theory. This work is with Prof. Michał Chodorowski.

In addition to the above, he holds the Junior Assistant position at the Dark Energy Science Collaboration (DESC) of the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST).

Research interests
  • understanding the role of systematics affecting the galaxy surveys and their impact on testing different cosmological models including the standard cosmological model(ΛCDM), dark energy models and Modified Gravity theories,
  • understanding the effects and observational signatures of different theories of gravity at astrophysical scales,
  • optimal reconstruction of CMB lensing potential from future CMB polarisation and temperature data,
  • clustering of galaxies and the effects of Redshift Space Distortions,
  • inhomogeneous models of cosmology and their observational significance.

Degrees and titles
  • 2018: M.Sc. Physics from Savitribai Phule Pune University, Pune (India).
  • 2015: B.Sc. Physics Hons. from The Maharaja Sayajirao University of Baroda, Vadodara (India).