Discovery of very-high-energy gamma-ray emission from the vicinity of PSR J1913+1011 with HESS

作者：Aharonian F^*; Akhperjanian A G; de Almeida U Barres; Bazer Bachi A R; Behera B; Beilicke M; Benbow W; Bernloehr K; Boisson C; Bolz O; Borrel V; Braun I; Brion E; Brown A M; Buehler R; Bulik T; Buesching I; Boutelier T; Carrigan S; Chadwick P M; Chounet L M; Clapson A C; Coignet G; Cornils R; Costamante L; Dalton M; Degrange B; Dickinson H J; Djannati Atai A; Domainko W; Drury L O'C; Dubois F; Dubus G; Dyks J

来源：Astronomy & Astrophysics, 2008, 484(2): 435-440.

DOI：10.1051/0004-6361:20078715

• ISM : supernova remnants
• gamma rays : observations

The HESS experiment, an array of four Imaging Atmospheric Cherenkov Telescopes with high sensitivity and large field-of-view, has been used to search for emitters of very-high-energy (VHE, > 100 GeV) gamma-rays along the Galactic plane, covering the region 30 degrees < l < 60 degrees, 280 degrees < l < 330 degrees, and -3 degrees < b < 3 degrees. In this continuation of the HESS Galactic Plane Scan, a new extended VHE gamma-ray source was discovered at alpha(2000)= 19(h)12(m)49(s), delta(2000)=+ 10 degrees 09' 06 ''( HESS J1912+101). Its integral flux between 1-10 TeV is similar to 10% of the Crab Nebula flux in the same energy range. The measured energy spectrum can be described by a power law dN/dE similar to E(-Gamma) with a photon index Gamma = 2.7 +/- 0.2(stat) +/- 0.3sys. HESS J1912+101 is plausibly associated with the high spin-down luminosity pulsar PSR J1913+1011. We also discuss associations with an as yet unconfirmed SNR candidate proposed from low frequency radio observation and/or with molecular clouds found in (13)CO data.

• 出版日期2008-6
• 单位中国地震局; 西北大学