Abstract Details
| Name: RAHUL GUPTA Affiliation: ARIES, Nainital Conference ID: ASI2019_255 Title : Multiwavelength Investigation of the Gamma Ray Burst Afterglow Authors and Co-Authors : RAHUL GUPTA,S. B. Pandey,Amit Kumar,Amar Aryan Abstract Type : Oral Abstract Category : Extragalactic Astronomy Abstract : Gamma-ray bursts (GRBs) are short and intense pulses of gamma-rays observed from the sky in arbitrary directions. GRBs are generally followed by long-lasting high-wavelength afterglow emission. Recent observations confirm that long GRBs (last for more than 2 seconds) are possible outcome of the gravitational collapse of massive stars (mass > 15M☉) and short GRBs (last for less than 2 seconds) are possible outcome of mergers of compact objects in binary systems (it may be merger of two neutron stars or a black hole and a neutron star). Multiwavelength investigation of afterglow of the GRBs can provide clues about possible progenitors as well as emission mechanisms which are not unambiguously established for GRBs. Multi-wavelength studies including optical data of afterglows can give solution to many mysteries related to these brightest explosions of the Universe. We present multiwavelength analysis of afterglow data of long GRBs. Broadband fitting of GRBs afterglows data gives us burst explosion parameters and the synchrotron radiation related parameters. We have measured explosion energy and circumburst density of GRBs afterglows using broadband fitting. These parameter provide important clues to the nature of the progenitor and burst environment. These studies are very much helpful in understanding the origin of the Universe as well. |