Dr
Pierre Brun
(Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP))
26/07/2007, 16:30
Cosmology and Astrophysics
Parallel Talk
AMS02 is a multi-purpose spectrometer with superconducting magnet, designed for 3
years of data taking abroad the International Space Station. Its high performance
regarding particle identification and energy measurement will allow performing indirect
searches for dark matter (DM) in different channel simultaneously: gamma rays,
positrons, antiprotons and hopefully antideuterons. A new...
Prof.
Wim De Boer
(Institut fuer Experimentelle Kernphysik)
26/07/2007, 16:50
Cosmology and Astrophysics
Parallel Talk
The excess of diffuse galactic gamma rays above 1 GeV, as observed by
the EGRET telescope on the NASA Compton Gamma Ray Observatory,
shows all the key features from Dark Matter (DM) annihilation:
1) the energy spectrum of the excess is the same in all sky directions
and is consistent with the gamma rays expected for the annihilation
of WIMPs with a mass between 50-100...
Dr
Christian Sander
(Univ. Hamburg)
26/07/2007, 17:10
Cosmology and Astrophysics
Parallel Talk
Recently it was shown that the excess of diffuse Galactic gamma rays above 1 GeV
could be interpreted as a Dark Matter annihilation signal. From the spectral shape of
the excess it is possible to determine a range for the allowed WIMP mass which can be
used to test the supersymmetric parameter space. It is found that the EGRET excess
combined with electroweak and other constraints, e.g....
Mr
Markus Weber
(Institut fuer Experimentelle Kernphysik - Universitaet Karlsruhe)
26/07/2007, 17:30
Cosmology and Astrophysics
Parallel Talk
The excess above 1 GeV in the energy spectrum of the diffuse galactic gamma radiation,
measured with the EGRET experiment, can be interpreted as the annihilation of dark
matter (DM) particles.
The DM is distributed in a halo around the Milky Way.
From the directionality of the gamma ray excess it is possible to determine the halo
profile.
A comparison is made between the theoretical...
Iris Gebauer
(Universitaet Karlsruhe)
26/07/2007, 17:50
Cosmology and Astrophysics
Parallel Talk
The EGRET excess of diffuse Galactic gamma rays shows all the features
expected from dark matter annihilation (DMA): a spectral shape
given by the fragmentation of mono-energetic quarks, which is the same in all sky
directions and an intensity distribution of the excess expected
from a standard dark matter halo, predicted by the rotation curve.
From the EGRET excess one can predict the...
Dr
Jan Olzem
(I. Physikalisches Institut B, RWTH Aachen)
26/07/2007, 18:10
Cosmology and Astrophysics
Parallel Talk
A recent analysis of cosmic ray data from a space borne experiment by the AMS
collaboration confirms the excess in the cosmic ray positron spectrum observed by
previous balloon experiments. The combination of the various experimental data
establishes a deviation from the expected background with a significance of more than
four standard deviations. The observed change in the spectral index...