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arXiv 0712.1173astro-ph
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HESS VHE Gamma-Ray来源,未识别对应物

HESS VHE Gamma-Ray Sources Without Identified Counterparts

HESS Collaboration, F. Aharonian

摘要:

在甚高能(VHE)能量范围内(100 GeV-100 TeV)的伽马射线的检测提供了一个直接的看法,在天体物理源中发现的超相对论粒子的母种群。因此,VHE伽马射线对于理解非热源中的基本天体物理过程是有用的。我们调查身份不明的VHE伽马射线源,已发现与HESS在最敏感的盲目调查的银河系平面在VHE能量进行到目前为止。HESS阵列的成像大气切伦科夫望远镜(IACT)与以前的仪器相比具有很高的灵敏度(对于5西格玛点源探测,25小时观测时间约为0.01克拉布),并且其大视场非常适合基于扫描的观测。正在进行的HESS调查的内部星系已经发现了大量的新的VHE源,并为每个我们试图通过X射线波段的无线电多波长数据的VHE发射相关联。对于这里考虑的八个不明VHE源中的每一个,我们给出了源及其环境的能谱和天空图。VHE形态与可用的多波长数据(主要是无线电和X射线)进行比较。没有发现合理的对应物。

英文摘要:

The detection of gamma rays in the very-high-energy (VHE) energy range (100 GeV--100 TeV) provides a direct view of the parent population of ultra-relativistic particles found in astrophysical sources. For this reason, VHE gamma rays are useful for understanding the underlying astrophysical processes in non-thermal sources. We investigate unidentified VHE gamma-ray sources that have been discovered with HESS in the most sensitive blind survey of the Galactic plane at VHE energies conducted so far. The HESS array of imaging atmospheric Cherenkov telescopes (IACTs) has a high sensitivity compared with previous instruments(~ 0.01 Crab) in 25 hours observation time for a 5 sigma point-source detection), and with its large field of view, is well suited for scan-based observations. The on-going HESS survey of the inner Galaxy has revealed a large number of new VHE sources, and for each we attempt to associate the VHE emission with multi-wavelength data in the radio through X-ray wavebands. For each of the eight unidentified VHE sources considered here, we present the energy spectra and sky maps of the sources and their environment. The VHE morphology is compared with available multi-wavelength data (mainly radio and X-rays). No plausible counterparts are found.

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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