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arXiv 0802.3841astro-ph
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在PSR J1913 +1011附近发现甚高能gamma-ray发射

Discovery of very-high-energy gamma-ray emission from the vicinity of PSR J1913+1011 with H.E.S.S

HESS Collaboration, F. Aharonian

摘要:

H.E.S.S.实验,一个阵列的四个成像大气切伦科夫望远镜具有高灵敏度和大视场,已被用来寻找发射极高能(VHE,>100 GeV)伽马射线沿银河平面,覆盖区域30度< l < 60度,280度< l < 330度,和-3度< b < 3度。在这一延续的H.E.S.S.银河平面扫描是在α(2000)= 19 h12 m49 s,δ(2000)=+10d09 '06 ''(HESS J1912+101)处发现的一个新的扩展VHE γ射线源。它在1-10 TeV之间的积分通量是蟹状星云在相同能量范围内通量的10%。所测量的能谱可以通过具有光子指数Gamma = 2.7+-0.2(stat)+-0.3(sys)的幂律来描述。HESS J1912+101可能与高自旋下光度脉冲星PSR J1913+1011有关。我们还讨论了协会与尚未确认的SNR候选人提出的低频射电观测和/或分子云中发现的13 CO数据。

英文摘要:

The H.E.S.S. 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 deg < l < 60 deg, 280 deg < l < 330 deg, and -3 deg < b < 3 deg. In this continuation of the H.E.S.S. Galactic Plane Scan, a new extended VHE gamma-ray source was discovered at alpha(2000)=19h12m49s, delta(2000)=+10d09'06'' (HESS J1912+101). Its integral flux between 1-10 TeV is ~10% of the Crab Nebula flux in the same energy range. The measured energy spectrum can be described by a power law with a photon index Gamma = 2.7+-0.2(stat)+-0.3(sys). 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 13CO data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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