# Observations of the young supernova remnant RX J1713.7-3946 with the Fermi Large Area Telescope

Abstract : 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 0.55$^{\circ} \pm 0.04^{\circ}$ 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 allows us to identify the LAT source with the supernova remnant RX J1713.7-3946. The spectrum of the source can be described by a very hard power-law with a photon index of $\Gamma = 1.5 \pm 0.1$ 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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Journal articles
Astrophysical Journal, American Astronomical Society, 2011, 734, pp.28. <10.1088/0004-637X/734/1/28>
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http://hal.in2p3.fr/in2p3-00608700
Contributor : Virginie Mas <>
Submitted on : Wednesday, July 13, 2011 - 10:10:17 PM
Last modification on : Tuesday, October 11, 2016 - 1:26:24 PM

### Citation

A. A. Abdo, Markus Ackermann, Marco Ajello, A. Allafort, Luca Baldini, et al.. Observations of the young supernova remnant RX J1713.7-3946 with the Fermi Large Area Telescope. Astrophysical Journal, American Astronomical Society, 2011, 734, pp.28. <10.1088/0004-637X/734/1/28>. <in2p3-00608700>

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