OBSERVATIONS OF THE YOUNG SUPERNOVA REMNANT RX J1713.7−3946 WITH THE FERMI LARGE AREA TELESCOPE

By A. Abdo, M. Ackermann, M. Ajello, A. Allafort, L. Baldini, J. Ballet, G. Barbiellini, M. Baring, D. Bastieri, R. Bellazzini and 155 more. 2011

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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.°55 ± 0.°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 Γ = 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.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/0eeef17d2e5c57485ebff816f0e25618f3b0e0fe

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Citations in the corpus

THE FIRST FERMI LAT SUPERNOVA REMNANT CATALOG (2015, background): “The young SNR RX J1713−3946 is one of the few examples which bears out this case, being dominated by IC emission (Abdo et al. 2011) and falling directly on the Γ = α + 1 line.”
Cosmic-ray acceleration in supernova remnants: non-linear theory revised (2012, background): “7-3946, whose γ-ray emission is likely due to very energetic electrons radiating through inverse-Compton scattering against some photon background [9], and objects like Tycho’s SNR, whose emission is likely due to the decay of neutral pions produced in nuclear collisions between relativistic nuclei ”
Strong evidence for hadron acceleration in Tycho’s supernova remnant (2011, methodology): “We identify Tycho’s SNR, freshly detected by FermiLAT and VERITAS, as the best candidate for investigating the effects that particle acceleration produces at all observablewav - lengths, simultaneously using multiple set of data to constraint our model.”
The origin of galactic cosmic rays (2013, unknown): “7-3946 (Aharonian et al. 2004, 2006, 2007), later followed by the detection of the same remnant in the GeV energy range with the Fermi-LAT telescope (Abdo et al. 2011).”
TOWARD UNDERSTANDING THE COSMIC-RAY ACCELERATION AT YOUNG SUPERNOVA REMNANTS INTERACTING WITH INTERSTELLAR CLOUDS: POSSIBLE APPLICATIONS TO RX J1713.7−3946 (2011, background): “7−3946 (Abdo et al. 2011).”
Diffusive propagation of cosmic rays from supernova remnants in the Galaxy. I: spectrum and chemical composition (2011, background): “ptions are RX J1713.7-3946 and Tycho, although for the ﬁrst remnant other problematic aspects may be found [11, 12]. Moreover, a recent analysis of the data on this remnant by the Fermi collaboration [13] suggests that in fact the spectrum of gamma rays is very ﬂat thereby leading to conclude that t”