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OBSERVATIONS OF THE YOUNG SUPERNOVA REMNANT RX J1713.7-3946 WITH THE FERMI LARGE AREA TELESCOPE
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
2011 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 734, no 1Article in journal (Refereed) Published
Abstract [en]

We present observations of the young supernova remnant (SNR) RX J1713.7-3946 with the Fermi Large Area Telescope (LAT). We clearly detect a source positionally coincident with the SNR. The source is extended with a best-fit extension of 0 degrees.55 +/- 0 degrees.04 matching the size of the non-thermal X-ray and TeV gamma-ray emission from the remnant. The positional coincidence and the matching extended emission allow us to identify the LAT source with SNR RX J1713.7-3946. The spectrum of the source can be described by a very hard power law with a photon index of Gamma = 1.5 +/- 0.1 that coincides in normalization with the steeper H. E. S. S.-detected gamma-ray spectrum at higher energies. The broadband gamma-ray emission is consistent with a leptonic origin as the dominant mechanism for the gamma-ray emission.

Place, publisher, year, edition, pages
2011. Vol. 734, no 1
Keyword [en]
acceleration of particles, gamma rays: general, gamma rays: ISM, ISM: individual objects (RX J1713.7-3946), ISM: supernova remnants, radiation mechanisms: non-thermal
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-34692DOI: 10.1088/0004-637X/734/1/28ISI: 000291026900028Scopus ID: 2-s2.0-79958288779OAI: oai:DiVA.org:kth-34692DiVA: diva2:422464
Funder
Knut and Alice Wallenberg Foundation
Note
QC 20110613Available from: 2011-06-13 Created: 2011-06-13Bibliographically approved

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CiteExportLink to record
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