Exploring the dark accelerator HESS J1745-303 with Fermi Large Area Telescope

(2) University of Hong Kong; (3) National Tsing Hua University); A. K. H. Kong (3) ((1) Chungnam National University; C. Y. Hui (1); E. M. H. Wu (2); J. H. K. Wu (2); K. S. Cheng (2); P. H. T. Tam (3); R. H. H. Huang (3)

arxiv: 1104.4836 · v1 · pith:MGBNBVNDnew · submitted 2011-04-26 · 🌌 astro-ph.HE

Exploring the dark accelerator HESS J1745-303 with Fermi Large Area Telescope

C. Y. Hui (1) , E. M. H. Wu (2) , J. H. K. Wu (2) , R. H. H. Huang (3) , K. S. Cheng (2) , P. H. T. Tam (3) , A. K. H. Kong (3) ((1) Chungnam National University , (2) University of Hong Kong

show 1 more author

(3) National Tsing Hua University)

This is my paper

classification 🌌 astro-ph.HE

keywords hessj1745-303gamma-rayacceleratordarkemissionfermiobtained

0 comments

read the original abstract

We present a detailed analysis of the gamma-ray emission from HESS J1745-303 with the data obtained by the Fermi Gamma-ray Space Telescope in the first ~29 months observation.The source can be clearly detected at the level of ~18-sigma and ~6-sigma in 1-20 GeV and 10-20 GeV respectively. Different from the results obtained by the Compton Gamma-ray Observatory, we do not find any evidence of variability. Most of emission in 10-20 GeV is found to coincide with the region C of HESS J1745-303. A simple power-law is sufficient to describe the GeV spectrum with a photon index of ~2.6. The power-law spectrum inferred in the GeV regime can be connected to that of a particular spatial component of HESS J1745-303 in 1-10 TeV without any spectral break. These properties impose independent constraints for understanding the nature of this "dark particle accelerator".

This paper has not been read by Pith yet.

Exploring the dark accelerator HESS J1745-303 with Fermi Large Area Telescope

discussion (0)