IDM2010

Session

Parallel session : Indirect Searches 4

30 juil. 2010, 09:55

Amphithéatre Dumontet (Montpellier 2 University)

108. Constraints on Dark Matter Annihilation from the Fermi-LAT Diffuse Gamma-Ray Measurement

Gabrijela Zaharijas (IPhT/CEA Sacalay)

30/07/2010 09:55

Dark Matter Indirect Searches

Talk

The diffuse measurement of the Fermi Large Area Telescope (LAT) can be a powerful tool in constraining the dark matter properties. In this talk, I will present constraints on dark matter models derived from the intensity and spectral shape of the Fermi-LAT Isotropic diffuse data. I will discuss the relation of the cosmological dark matter signal to the one coming from within our Galaxy, as...

144. Dark Matter multi-wavelength constraints from radio observations and from diffuse Fermi-LAT gamma-ray observations

Dr alessandro cuoco (Oskar Klein Center - Stockholm University)

30/07/2010 10:15

Talk

Electrons from Dark Matter (DM) annihilation produce radiation through synchrotron and Inverse Compton Scattering (ICS) interactions in the galactic environment. This multi-wavelength emission provides a complementary mean to test the DM hypothesis. I will present constraints coming from radio observations as well as ICS constraints from gamma-ray measurements by Fermi-LAT in the Galactic Halo region.

124. Fermi-LAT constraints on diffuse Dark Matter annihilation from the Galactic Halo

Brandon Anderson (University of California - Santa Cruz)

30/07/2010 10:35

Talk

Our Galaxy resides in the center of a vast "Halo" of Dark Matter (DM). This concentra- tion produces, in many viable particle physics models, an indirect Weakly Interacting Massive Particle (WIMP) annihilation signal that peaks in the Fermi-LAT's energy range. Our knowledge of the diffuse background is essential to placing reasonable limits on the DM mass and cross-section. We incorporate...

112. Anisotropies in the diffuse gamma-ray background measured by the Fermi-LAT

Jennifer Siegal-Gaskins (CCAPP, Ohio State University)

30/07/2010 10:55

Dark Matter Indirect Searches

Talk

The contribution of unresolved sources to the diffuse gamma-ray background could produce anisotropies in this emission on small angular scales. Recent studies have considered the angular power spectrum and other anisotropy metrics as tools for identifying the contributions to the diffuse emission from unresolved source classes, such as extragalactic and Galactic dark matter as well as various...

125. Dark Matter Subhalos In the Fermi First Source Catalog

Prof. Dan Hooper (Fermilab/University of Chicago)

30/07/2010 11:15

Dark Matter Indirect Searches

Talk

The Milky Way's dark matter halo is thought to contain large numbers of smaller subhalos. These objects can contain very high densities of dark matter, and produce potentially observable fluxes of gamma rays. In this article, we study the gamma ray sources in the Fermi Gamma Ray Space Telescope's recently published First Source Catalog, and attempt to determine whether this catalog might...

93. Constraining dark matter signal from a combined analysis of Milky Way satellites using the Fermi-LAT

Maja Llena Garde (Oskar Klein Centre, Stockholm University.)

30/07/2010 11:35

Dark Matter Indirect Searches

Talk

The Fermi LAT collaboration has recently presented constraints on a signal from annihilating dark matter from separate analyses of a number of dwarf spheroidal galaxies. Since the expected annihilation signal has the same physical properties regardless of the target (except for a normalization scale), the constraining power can be enhanced by a combined analysis, for which initial results will...