IDM2010

Session

Parallel session : Indirect Searches 3

27 juil. 2010, 15:50

Amphithéatre Dumontet (Montpellier 2 University)

174. Fermi Gamma-ray Haze via Dark Matter and Millisecond Pulsars

Dr Dmitry Malyshev (CCPP, NYU)

27/07/2010 15:50

Talk

Possible explanations for the haze of gamma-rays around the center of the Milky Way reported by Dobler et al are considered. It is found find that the most significant contributions may come from annihilating dark matter and millisecond pulsars.

81. Electroweak bremsstrahlung and indirect detection of Dark Matter by neutrino telescopes

Dr Nans Baro (Institute for Theoretical Particle Physics and Cosmology)

27/07/2010 16:10

Talk

We study potential impacts of electroweak bremsstrahlung on indirect detection of supersymmetric Dark Matter by neutrino telescopes. Indeed these effects may modify observed neutrino fluxes coming from neutralino annihilations in the galactic halo or the Sun. We discuss two scenarios with high neutralino masses where such enhancements become relevant: a scenario with a pure bino neutralino and...

83. Indirect searches of dark matter

M. Le Zhang (University of Hamburg, II. Institute for Theoretical Physics)

27/07/2010 16:30

Talk

If dark matter decays into electrons and positrons, it can affect Galactic radio emissions and gamma ray fluxes as well as the local cosmic ray fluxes. We propose a new, more general analysis of constraints on dark matter. The constraints can be obtained for any decaying dark matter model by convolving the specific dark matter decay spectrum with a response function. We derive this response...

76. DMMW: A tool for multi-wavelength dark matter searches

Iris Gebauer (UC Santa Cruz)

27/07/2010 16:50

Talk

The level of emission expected from Dark Matter annihilation at radio frequencies, UV and at X-ray frequencies is comparable, and thus complementary, to searches in gamma rays with Fermi-LAT. However, unlike the prompt gamma-ray emission, the secondary inverse Compton, bremsstrahlung and synchrotron emission from leptons depends on the transport setup and the astrophysical properties of the...

86. Annihilation vs. Decay: Constraining Dark Matter Properties from a Gamma-Ray Detection in Dwarf Galaxies

Dr Sergio Palomares-Ruiz (CFTP-IST)

27/07/2010 17:10

Talk

Most proposed dark matter candidates are stable and are produced thermally in the early Universe. However, there is also the possibility of unstable dark matter, produced thermally or otherwise. We propose a strategy to distinguish between dark matter annihilation and/or decay in the case that a clear signal is detected in gamma-ray observations of Milky Way dwarf galaxies with gamma-ray...

53. The General Antiparticle Spectrometer (GAPS) - Hunt for dark matter using low energy antideuterons

Dr Philip von Doetinchem (UC Berkeley Space Sciences Laboratory)

27/07/2010 17:30

Dark Matter Direct Searches

Talk

The GAPS experiment is foreseen to carry out a dark matter search using low energy cosmic ray antideuterons (< 0.3GeV/n) using a novel detection approach. The theoretically predicted antideuteron flux resulting from secondary interactions of primary cosmic rays, e.g. protons, with the interstellar medium is very low. So far not a single cosmic antideuteron has been detected by any experiment...