Description
Scribe: Thierry Pradier
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Prof. David Eichler (Ben Gurion University)19/05/2009 14:00Nature can apparently produce high energy (HE) particle budgets of $10^{50}$ erg/s, lasting tens of seconds, during stellar collapse. Such events account for gamma ray bursts (GRB). However, at typical cosmological distances, GRB would be hard to detect in neutrinos. It is suggested here (as in Eichler and Levinson, 1999) that nearby (D < 1 Gpc) GRB, the vast majority of which are...Go to contribution page
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Dr Samaya Nissanke19/05/2009 14:30Inspiralling compact binaries are excellent standard sirens (the gravitational wave counterpart to standard candles), in that their gravitational wave measurements allow for self-calibrated absolute source distances. Therefore, when coupled with independent electromagnetic redshift measures, standard sirens allow us to map out the Universe's expansion history and enable...Go to contribution page
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Dr Kei Kotake (National Astronomical Observatory of Japan)19/05/2009 15:00Core-collapse supernovae are dramatic explosions marking the catastrophic end of massive stars. Optical outbursts begin only hours after the actual onset of the catastrophe in the very center of the star. There the central iron core collapses to a neutron star thereby liberating the gravitational binding energy which causes the supernova explosion. The only means to get direct...Go to contribution page
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M. Ricard Tomas (II. Institut für Theoretische Physik (Universität Hamburg))19/05/2009 15:45We discuss how one can exploit the enormous neutrino signal expected in a future galactic supernova (SN) to learn about the physics of the SN. We will concentrate on two different aspects: Firstly we analyze the possibility to locate the SN by using the directionality of the elastic scattering off electrons in a water Cherenkov detector. On the other hand we will show how their weak...Go to contribution page
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Dr Fabien CASSE (AstroParticule et Cosmologie (APC))19/05/2009 16:15In this talk, I will try to present a short overview of state-of-the-art studies and simulations dealing with the astrophysical jets being observed in the vicinity of compact objects. I will start by presenting magnetohydrodynamical simulations aiming to explain how can astrophysical plasmas are believed to be accelerated by magnetic field interacting with rotating black holes such as active...Go to contribution page
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Dr Matias Reynoso (CONICET)19/05/2009 16:45We discuss the production of very high energy neutrinos in the jets of the microquasar SS433. The interactions of shock-accelerated protons and electrons at the base of the precessing jets give rise, also, to a flux of gamma rays. Taking into account the absorption effects, we can estimate a surviving gamma-ray signal to be detected with Fermi LAT and with Cherenkov telescopes. Neutrinos,...Go to contribution page
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19/05/2009 17:15