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Title: MAGIC upper limits for two Milagro-detected bright Fermi sources in the region of SNR G65.1+0.6
Author: Paredes i Poy, Josep Maria
Bosch i Ramon, Valentí
Ribó Gomis, Marc
Keywords: Supernoves
Issue Date: 30-Nov-2010
Publisher: Institute of Physics (IOP)
Abstract: We report on the observation of the region around supernova remnant G65.1+0.6 with the stand-alone MAGIC-I telescope. This region hosts the two bright GeV gamma-ray sources 1FGL J1954.3+2836 and 1FGL J1958.6+2845. They are identified as GeV pulsars and both have a possible counterpart detected at about 35 TeV by the Milagro observatory. MAGIC collected 25.5 hours of good quality data, and found no significant emission in the range around 1 TeV. We therefore report differential flux upper limits, assuming the emission to be point-like (<0.1 deg) or within a radius of 0.3 deg. In the point-like scenario, the flux limits around 1 TeV are at the level of 3 % and 2 % of the Crab Nebula flux, for the two sources respectively. This implies that the Milagro emission is either extended over a much larger area than our point spread function, or it must be peaked at energies beyond 1 TeV, resulting in a photon index harder than 2.2 in the TeV band.
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It is part of: Astrophysical Journal, 2010, vol. 725, num. 2, p. 1629-1632
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ISSN: 0004-637X
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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