Funk S (2005)
Publication Type: Journal article
Publication year: 2005
Book Volume: 439
Pages Range: 1013-1021
Journal Issue: 3
DOI: 10.1051/0004-6361:20053195
The serendipitous discovery of an unidentified extended TeV gamma-ray source close to the galactic plane named HESSJ1303-631 at a significance of 21 standard deviations is reported. The observations were performed between February and June 2004 with the HESS stereoscopic system of Cherenkov telescopes in Namibia. HESS J1303-631 was discovered roughly 0.6 degrees north of the binary system PSRB1259-63/SS2883, the target object of the initial observation campaign which was also detected at TeV energies in the same field of view. HESS J1303-631 is extended with a width of an assumed intrinsic Gaussian emission profile of sigma = (0.16 +/- 0.02)degrees. and the integral flux above 380 GeV is compatible with constant emission over the entire observational period of (17 +/- 3)% of the Crab Nebula flux. The measured energy spectrum can be described by a power-law dN/dE similar to E-Gamma with a photon index of G = 2.44 +/- 0.05(stat) +/- 0.2(syst). Up to now, no counterpart at other wavelengths is identified. Various possible TeV production scenarios are discussed.
APA:
Funk, S. (2005). Serendipitous discovery of the unidentified extended TeV gamma-ray source HESS J1303-631. Astronomy & Astrophysics, 439(3), 1013-1021. https://dx.doi.org/10.1051/0004-6361:20053195
MLA:
Funk, Stefan. "Serendipitous discovery of the unidentified extended TeV gamma-ray source HESS J1303-631." Astronomy & Astrophysics 439.3 (2005): 1013-1021.
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