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ISDCCAPCDCI
Data Centre for Astrophysics
Astronomy Department of the University of Geneva
ISDC Seminar

Wednesday, 1 July 2009 at 10:00

Andrea Tramacere
SLAC, Stanford

Spectral analysis of Fermi-LAT data

Abstract. I will show how to perform a spectral analysis of the Fermi-LAT data, starting from the data selection, and the source detection. I will show ho to use the unbinned likelihood analysis and which are the possible biases.

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Wednesday, 1 July 2009 at 14:00

Andrea Tramacere
SLAC, Stanford

Phenomenological approach to the multi-wavelength study of blazars

Abstract. I will discuss a phenomenological approach to the multiwavelength study of Blazar emission. In the first part I will show how to use UV/X-ray data to look for signature from stochastic acceleration processes in HBL objects and how these features can be linked to predict the GeV/TeV emission, and how the intrinsic spectral curvature is relevant to understand the EBL issue. In the second part I will discuss the multiwavelength emission from FSQRs in the framework of the external Compton scenario. I will show how the changes in different physical parameters can account for different patterns in the spectral evolution. showing predictions for the opt/UV, X-ray, and gamma emission.

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