Seminar by Debanjan Bose

Seminar

Messengers of High Energy Universe

Speaker: Debanjan Bose (S N Bose National Centre for Basic Sciences, Kolkata)

तिथि और समय
कार्यक्रम का स्थान
Auditorium

अमूर्त

In this talk, I will describe motivation to study the high energy Universe. Brief history of cosmic rays, where it all began. These cosmic rays, mostly protons, being charged particles are deflected in their path, therefore their source of origin is still unknown. We need to detect neutral messengers: neutrinos and gamma rays; in order to locate sources of high energy cosmic rays. At high energies gamma-rays & neutrinos are produced in the vicinity of super massive black holes, neutron stars and due to shock acceleration caused by supernovae. Thus gamma-rays & neutrinos will provide a unique tool to study astrophysical objects under relativistic conditions. I will also talk about detection techniques of these high energy messengers on ground. Coming decades will be very exciting for astroparticle physics with upcoming detectors such as CTA, IceCube-Gen2, Hyper-Kamiokande etc.

Short Biography
Debanjan Bose currently working as Ramanujan Fellow at the Department of Astrophysics & High Energy Physics, S N Bose National Centre for Basic Sciences (SNBNCBS), Kolkata.His area of research is in high energy astrophysics, astro-particle physics, neutrino physics and multi-messenger astronomy. He did his masters at University of Calcutta (1998-2000). He obtained his Ph.D. from the Tata Institute of Fundamental Research, Mumbai in the year 2007. During Phd. he worked for Pachmarhi Array of Cherenkov Telescopes (PACT). It was designed to detect very high energy gamma-rays coming from astrophysical sources. After completing Phd. he went to Madrid, Spain to work for MAGIC collaboration. MAGIC (Major Atmospheric Gamma Imaging Cherenkov) telescope is also built to detect very high energy gamma-rays coming from astrophysical sources. In 2009, he joined IceCube collaboration. IceCube neutrino telescope is built at the South Pole to detect high energy cosmic neutrinos coming from astrophysical sources. First, he was located in Brussels, Belgium for 3 years and then went to South Korea where he stayed until the middle of 2017. Currently, he is a member of Hyper-Kamiokande collaboration and taken a lead to form an Indian consortium who are interested in joining HyperK. Similarly, he has also taken the initiative to form an Indian-Consortium to join CTA (Cherenkov Telescope Array) collaboration. As a researcher, he has made very important and significant contributions in high energy astrophysics and neutrino physics throughout his career. He has experience in gamma-ray, x-ray and neutrino astronomy. Over the years he has acquired a vast range of expertise in instrumentation, statistical data analysis, Monte Carlo simulations and software development.