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arXiv 1002.2738astro-ph.HE
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超新星遗迹与分子云相互作用的费米LAT观测

Fermi LAT Observations of Supernova Remnants Interacting with Molecular Clouds

Daniel Castro, Patrick Slane

摘要:

我们报告的探测伽马射线发射符合四个超新星遗迹(SNRs)使用的数据从大面积望远镜上的费米伽马射线太空望远镜。G349.7+0.2,CTB 37 A,3C 391和G8.7-0.1是已知与分子云相互作用的超新星遗迹,这一点可以通过在它们的方向上观测到1720 MHz的羟基(OH)脉泽发射来证明。SNR冲击被认为是宇宙射线加速的场所,致密物质云可以为π介子衰变产生伽马射线提供有效的目标。观测结果揭示了G349.7+0.2、CTB 37 A和3C 391方向上的未分辨源,以及与G8.7-0.1一致的可能扩展源,所有这些源的显著性水平都大于10 sigma。

英文摘要:

We report the detection of gamma-ray emission coincident with four supernova remnants (SNRs) using data from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope. G349.7+0.2, CTB 37A, 3C 391 and G8.7-0.1 are supernova remnants known to be interacting with molecular clouds, as evidenced by observations of hydroxyl (OH) maser emission at 1720 MHz in their directions. SNR shocks are expected to be sites of cosmic rays acceleration, and clouds of dense material can provide effective targets for production of gamma-rays from pion-decay. The observations reveal unresolved sources in the direction of G349.7+0.2, CTB 37A and 3C 391, and a possibly extended source coincident with G8.7-0.1, all with significance levels greater than 10 sigma.

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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