A method to unfold the energy spectra of point like sources from the Fermi-LAT data

Details A method to unfold the energy spectra of point like sources from the Fermi-LAT data A method to unfold the energy spectra of point like sources from the Fermi-LAT data

2009-12-07

arxiv.org/abs/0912.1236v1

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

4 pages, 4 figures, Contribution to the 31st ICRC, Lodz, Poland, July 2009

Scientific paper

The Large Area Telescope (LAT) onboard the Fermi satellite is exploring the gamma-ray sky in the energy range above 20MeV. We have developed a method to reconstruct the energy spectra of the gamma rays detected by the Fermi LAT instrument based on a Bayesian unfolding approach. The method has been successfully applied to simulated data sets to reconstruct the energy spectra of both steady and pulsating point sources. The basic ideas and the procedures implemented to evaluate the energy spectra of gamma ray sources will be illustrated, and the results of the application of the method to a typical test case will be shown.

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