PPT-Supernovae and Gamma ray bursts:

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. withThe COMPTEL Team: Hans Bloemen, Robert Georgii, Wim Hermsen, J . . . . . 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, . 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. Talk by: John McCann. Paper by: D. . Poznanski. , Z. Kostrzewa-Rutkowska, L. Wyrzykowski & N. . Blagorodnova. OGLE-IV. OGLE – Optical Gravitational Lensing Experiment, Phase four. Las . light curves and spectral evolution. Bruno . Leibundgut. ESO. The core-collapse SN poster child. SN 1987A. the best observed supernova ever. Suntzeff. (2003). (also . Fransson. et al. 2007). What do we want to learn about supernovae?. Most stars either have M < 1.4 . M. ʘ. , . or can lose enough mass during post-main sequence evolution to get there, and end as white dwarf. However if core is more massive, nothing can stop gravitational collapse. University of Sheffield. What is a supernova?. Stellar explosions. Types of supernova. The importance of. supernovae. Supernova remnants. Stellar explosions. Most stars are a balancing act between gravity and pressure. 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. 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 (t>2s) . Vikram . Dwarkadas. . (U Chicago). Matthieu. Renaud, . Alexandre. . Marcowith. . (LUPM, U Montpellier). Vincent . Tatischeff. . (. Univ. Paris-. Sud. ). August 11 2017. TevPA 2017 : VVD. 1. We acknowledge support from the FACCTS program at .