Sourabh Paul

Visiting Fellow
Email: sourabh [at]
Phone: +91- 20 - 25719234
Extn: 9234
Office: F226
National Centre for Radio Astrophysics
Tata Institute of Fundamental Research
Savitribai Phule Pune University Campus,
Pune 411 007
Maharashtra, INDIA

Main Research Areas: 21-cm Cosmology; Epoch of Reionization; Radio interferometry; Cosmic Microwave Background Radiation.


Sourabh Paul obtained his B.Sc. (Honours) in Physics from St. Xavier's College, Kolkata, in 2008, and his M.Sc. in Applied Physics from the Indian Institute of Engineering Science and Technology, Shibpur, in 2010. He then moved to the Raman Research Institute, Bangalore, for his doctoral studies, obtaining his Ph.D. in 2016. He joined NCRA-TIFR as a Visiting Fellow in August 2017.

Research description:

My research topic is the study of the redshifted neutral hydrogen (HI) from the Epoch of Reionization. I have been involved with the Murchison Widefield Array (MWA) EoR experiment. The prime focus of my research has been the extraction of the cosmological HI 21cm EoR power spectra from radio interferometric observations through statistical analysis, and studing the interplay between noise and foregrounds in EoR experiments through simulations as well as real data. In addition, I also have experience in widefield imaging from radio interferometric data. My other research interests are CMB-HI cross-correlation, bispectrum studies, etc.

Selected publications:

1. Delay spectrum with Phase-Tracking Arrays: Extracting the HI power spectrum from the Epoch of
Reionization (S. Paul, S. K. Sethi, et al., 2016, ApJ, 833, 213)

2. Study of the Redshifted HI from the Epoch of Reionization with Drift scan (S. Paul, S. K. Sethi, et al., 2014, ApJ, 793, 28)