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arXiv 0802.2964astro-ph
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Gamma-ray源TeV J2032 +4130的分子环境

The Molecular Environment of the Gamma-ray Source TeV J2032+4130

Yousaf M. Butt, Nicola Schneider, T. M. Dame, Christopher Brunt

摘要:

这个神秘的高能伽马射线源TeV J2032+4130与天鹅座OB 2星协一致,尽管两者之间的物理联系仍然不确定。探测到的极高能量光子可能是通过局部加速的宇宙射线撞击源区域中的分子云而产生的。为了验证这一假设,我们使用了基特峰12米,海因里希-赫兹亚毫米望远镜(HH-SMT)和五所大学射电天文台(FCRAO),获得了12 CO和13 CO的J=1->0和J=2->1线的观测结果。我们在这里报告的检测显着的分子材料对TeV源区域,可以作为本地加速CR的目标。我们还发现紧凑的分子团的证据,在CO光谱显示大的线宽,可能表明在天鹅座OB 2这个地区的充满活力的过程。

英文摘要:

The mysterious very high energy gamma-ray source, TeV J2032+4130, is coincident with the powerful Cygnus OB2 stellar association, though a physical association between the two remains uncertain. It is possible that the detected very high energy photons are produced via an overdensity of locally accelerated cosmic rays impinging on molecular clouds in the source region. In order to test this hypothesis, we used the Kitt Peak 12m, the Heinrich-Hertz Submillimeter Telescope (HH-SMT), and the Five College Radio Astronomy Observatory (FCRAO), to obtain observations in the J=1-->0 and J=2-->1 lines of both 12CO and 13CO. We report here on the detection of significant molecular material toward the TeV source region which could be acting as the target of locally accelerated CRs. We also find evidence of compact molecular clumps, showing large line widths in the CO spectra, possibly indicative of energetic processes in this region of Cygnus OB2.

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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