Description
Scribe: Thierry Pradier
Prof.
David Eichler
(Ben Gurion University)
19/05/2009 14:00
Nature 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...
Dr
Kei Kotake
(National Astronomical Observatory of Japan)
19/05/2009 15:00
Core-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...
M.
Ricard Tomas
(II. Institut für Theoretische Physik (Universität Hamburg))
19/05/2009 15:45
We 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...
Dr
Fabien CASSE
(AstroParticule et Cosmologie (APC))
19/05/2009 16:15
In 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...
Dr
Matias Reynoso
(CONICET)
19/05/2009 16:45
We 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,...
