The 4th UniverseNet School - Frontiers of Particle Cosmology

Session

6 talks (Chair: Pierre SALATI)

14 Sept 2010, 16:30

Lecce, Università del Salento

22. Mr. GAGGERO, Daniele (INFN Pisa): Combined interpretation of recently measured electron, positron and antiproton spectra

14/09/2010, 16:30

We present some models which try to interpret the recently published results on electron+positron spectrum by Fermi-LAT collaboration and on positron fraction by PAMELA in terms of a combination of a Galactic component plus an extra primary source of electron+positron pairs of astrophysical origin. We adopt several diffusion setups, whose parameters are constrained by recent CREAM B/C data and...

23. Dr. GUSTAFSSON, Michael (INFN Padova): Constraining dark matter properties from gamma-ray measurements

14/09/2010, 16:45

I will try to highlight one or few of the Fermi collaboration's published results on constraining dark matter properties.

24. Mr. HRYCZUK, Andrzej (SISSA Trieste): Sommerfeld enhancements in the MSSM

14/09/2010, 17:00

In this talk I will describe the Sommerfeld effect arising due to gauge and Higgs boson exchange within the full MSSM. I will present and discuss a general method of computing this effect and numerical results showing its relevance for the relic density of general neutralino dark matter.

25. Mr. MERTSCH, Philipp (University of Oxford): Systematic effects in the extraction of the 'WMAP haze'

14/09/2010, 17:15

The extraction of a 'haze' from the WMAP microwave skymaps is based on subtraction of known foregrounds, viz. free-free (bremsstrahlung), thermal dust and synchrotron, each traced by other skymaps. While the 408 MHz Effelsberg survey is used for the synchrotron template, the WMAP bands are at tens of GHz where the spatial distribution of the radiating cosmic ray electrons ought to be quite...

26. Mr. PANCI, Paolo (University of L'Aquila & Paris 7 & CERN): Diffuse gamma Ray Constraints on Annihilating or Decaying DM after Fermi

14/09/2010, 17:30

We consider the diffuse gamma ray data from FERMI first year observations and compare them to the gamma ray fluxes predicted by Dark Matter annihilation or decay, for different observational regions of the sky and a range of Dark Matter masses, annihilation/decay channels and Dark Matter galactic profiles. We find that the data exclude large regions of the Dark Matter parameter space not...

27. Dr. ZAHARIJAS, Gabrijela (CEA Saclay): Constraints on Dark Matter Annihilation from the Fermi-LAT Diffuse Gamma-Ray Measurement

14/09/2010, 17:45

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...