PPT-Gamma Ray Bursts Poonam Chandra

National Centre for Radio Astrophysics Tata Institute of Fundamental Research Poonam Chandra What are Gamma Ray bursts GRBs Most energetic events in the universe Long duration GRBs tgt2s . Alexander . Kotov. , . ChengXiang. . Zhai. , Richard . Sproat. University of Illinois at Urbana-Champaign. Roadmap. Problem definition. Previous work. Approach. Experiments. Summary. Motivation. Web data is generated by a large number of textual streams (news, blogs, tweets, etc. . . . . . Maria . Giovanna Dainotti. Stanford . University, USA, Fulbright Scholar, . now . JSPS Fellow . at . Riken, Tokyo, . extreme physics at play. Bruce Gendre. ARTEMIS. Description of a GRB. Gamma-ray Burst : . burst of high energy photons. Isotropic distribution on the sky. extragalactic events. . quite common (~2/day. Gamma ray bursts (GRB) are an especially exciting outflow phenomena that are capable of outputting as much energy as our sun will. Christopher C. . Lindner. 1. Abstract. Relativistic Jets are streams of plasma moving throughout the universe at speeds up to 99% the speed of light. They produce high-energy X-ray, radio, and visible radiation that are observable from great distances across the universe. Andrew Levan. University of Warwick. Parameter space. Kouveliotou. et al. 1993. Parameter space. Kulkarni. & . Kasliwal. 2010. Parameter space. LGRBs. SGRBs. SGRs. ?. TDEs?. Galactic sources (SGR, LMXB, HMXB, . Poonam Chandra. National Centre for Radio Astrophysics - Tata Institute of Fundamental Research. Collaborator: Dale Frail and many others. Radio Afterglows. . Late time follow up.. . Accurate energetics instead of “isotropic equivalent” energy .. Manjil P. Saikia. Department of Mathematical Sciences,. School of Science and Technology,. Tezpur University, India. The Man. and. The Machine. Manjil P. Saikia. 2. Manjil P. Saikia. 3. Chandra can observe X-rays from particles up to the last second before they fall into a black hole!!!. Andrew Levan. University of Warwick. Burst durations. Swift 1644+57. Very long bursts are often image triggers (1000+s). Correction from Swift observed rates to astrophysical rates (at Swift limits) could be a factor 10. Edwin Kite (U. Chicago), John Armstrong (Weber State), . Robin Wordsworth (Harvard), Francois Forget (LMD) . c. an climate . models. h. elp distinguish. these scenarios?. h. abitable surface. s. terile surface. Mysterious explosions in the Universe. Poonam Chandra. Royal Military College of Canada. Universe is 14 billion years old.. Our sun is 5 billion years.. Supernovae and Gamma ray bursts. Explosions lasting fraction of a second to few seconds.. from keV to . GeV. energies and . beyond. . Elisabetta Bissaldi. Member of the Fermi-GBM and . Fermi-LAT Collaborations, . and of the CTA Consortium. Politecnico. . & INFN . Bari. elisabetta.bissaldi@ba.infn.it. Patrick L. Kelly et al. 2014 arXiv:1411.6009 . submitted to Nature. Summarised. . by Poonam Chandra. February 18, 2015. Poonam Chandra. 1. Punch line. Discovery of the . first multiply-imaged . gravitationally-lensed supernova.. catch a burst and notify other observatoriesboth in space and on the ground of its approx-imate locationWithin minutes HETE-2 mayobtain a precise locationCurrent telescopestake much longer to notify o Liz Hays . (. NASA Goddard Space Flight Center). The Origin of Cosmic Rays. Credit S. . Swordy. Victor Hess and his . “Flight . Ops . Team”, . 1912. From protons. Pion decay. Accelerated protons (p) interact with matter.