GAMMA-RAY OBSERVATIONS OF THE SUPERNOVA REMNANT RX J0852.0-4622 WITH THE FERMI LARGE AREA TELESCOPE
Tanaka T, Allafort A, Ballet J, Funk S, Giordano F, Hewitt J, Lemoine-Goumard M, Tajima H, Tibolla O, Uchiyama Y (2011)
Publication Type: Journal article
Publication year: 2011
Journal
Book Volume: 740
Journal Issue: 2
DOI: 10.1088/2041-8205/740/2/L51
Abstract
We report on gamma-ray observations of the supernova remnant (SNR) RX J0852.0-4622 with the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope. In the Fermi-LAT data, we find a spatially extended source at the location of the SNR. The extension is consistent with the SNR size seen in other wavelengths such as X-rays and TeV gamma rays, leading to the identification of the gamma-ray source with the SNR. The spectrum is well described as a power law with a photon index of Gamma = 1.85 +/- 0.06 (stat)(-0.19)(+0.18) (sys), which smoothly connects to the H. E. S. S. spectrum in the TeV energy band. We discuss the gamma-ray emission mechanism based on multiwavelength data. The broadband data can be fit well by a model in which the gamma rays are of hadronic origin. We also consider a scenario with inverse Compton scattering of electrons as the emission mechanism of the gamma rays. Although the leptonic model predicts a harder spectrum in the Fermi-LAT energy range, the model can fit the data considering the statistical and systematic errors.
Authors with CRIS profile
Involved external institutions
Stanford University
United States (USA) (US)
University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot
France (FR)
Politecnico di Bari
Italy (IT)
National Aeronautics and Space Administration (NASA)
United States (USA) (US)
Université Bordeaux 1, Sciences et Technologies
France (FR)
Julius-Maximilians-Universität Würzburg
Germany (DE)
United States (USA) (US)
University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot
France (FR)
Politecnico di Bari
Italy (IT)
National Aeronautics and Space Administration (NASA)
United States (USA) (US)
Université Bordeaux 1, Sciences et Technologies
France (FR)
Julius-Maximilians-Universität Würzburg
Germany (DE)
How to cite
APA:
Tanaka, T., Allafort, A., Ballet, J., Funk, S., Giordano, F., Hewitt, J.,... Uchiyama, Y. (2011). GAMMA-RAY OBSERVATIONS OF THE SUPERNOVA REMNANT RX J0852.0-4622 WITH THE FERMI LARGE AREA TELESCOPE. Astrophysical Journal Letters, 740(2). https://doi.org/10.1088/2041-8205/740/2/L51
MLA:
Tanaka, T., et al. "GAMMA-RAY OBSERVATIONS OF THE SUPERNOVA REMNANT RX J0852.0-4622 WITH THE FERMI LARGE AREA TELESCOPE." Astrophysical Journal Letters 740.2 (2011).
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