Journal
ASTROPHYSICAL JOURNAL
Volume 734, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/734/1/28
Keywords
acceleration of particles; gamma rays: general; gamma rays: ISM; ISM: individual objects (RX J1713.7-3946); ISM: supernova remnants; radiation mechanisms: non-thermal
Categories
Funding
- K. A. Wallenberg Foundation
- European Community [ERC-StG-259391]
- International Doctorate on Astroparticle Physics (IDAPP) program
- ICREA Funding Source: Custom
- Grants-in-Aid for Scientific Research [21740184, 10J08529, 22740119, 21253003] Funding Source: KAKEN
- Science and Technology Facilities Council [ST/H00260X/1] Funding Source: researchfish
- STFC [ST/H00260X/1] Funding Source: UKRI
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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.
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