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MAGIC Upper Limits for two Milagro-detected, Bright Fermi Sources in the Region of SNR G65.1+0.6 (CROSBI ID 165124)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Aleksić, Jelena ; ... ; Dominis Prester, Dijana ; ... ; Ferenc, Daniel ; ... ; Godinović, Nikola ; ... ; Hrupec, Dario ; ... et al. MAGIC Upper Limits for two Milagro-detected, Bright Fermi Sources in the Region of SNR G65.1+0.6 // The Astrophysical journal, 725 (2010), 2; 1629-1632. doi: 10.1088/0004-637X/725/2/1629

Podaci o odgovornosti

Aleksić, Jelena ; ... ; Dominis Prester, Dijana ; ... ; Ferenc, Daniel ; ... ; Godinović, Nikola ; ... ; Hrupec, Dario ; ... ; Puljak, Ivica ; ... ; Surić, Tihomir ; ... ; Terzić, Tomislav

engleski

MAGIC Upper Limits for two Milagro-detected, Bright Fermi Sources in the Region of SNR G65.1+0.6

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.

pulsars: individual(PSR J1957+2831; LAT PSR J1954+2836; LAT PSR J1958+2846); ISM: supernova remnants

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Podaci o izdanju

725 (2)

2010.

1629-1632

objavljeno

0004-637X

10.1088/0004-637X/725/2/1629

Povezanost rada

Fizika

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