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arXiv 0709.3695astro-ph
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使用VERITAS对1ES 0647+250和1ES 0806+524进行的观测

Observations of 1ES 0647+250 and 1ES 0806+524 with VERITAS

P. Cogan

摘要:

本文报道用VERITAS对耀变体1ES 0647+250和1ES 0806+524的观测结果。这些物体是在非常高的能量制度,由于高能电子和足够的种子光子的存在下,最受欢迎的候选人河外源。高能电子的存在是建立从同步辐射峰值的光谱能量分布的耀变体。是否存在足够的种子光子取决于无线电透过光学波段中的通量。在同步加速器自康普顿模型的背景下,这些是非常高能量的伽马射线发射的关键成分。1ES 0647+250和1ES 0806+524的红移分别为0.203和0.138,因此探测到这些天体的高能γ射线发射将对了解河外红外背景光做出重要贡献。这些数据的分析依赖于非常高能量的伽马射线天文学的标准技术,并将结果与先前报道的上限和理论预测进行比较。

英文摘要:

Observations of the blazars 1ES 0647+250 and 1ES 0806+524 with VERITAS are reported here. These objects are among the favoured candidate extragalactic sources in the very high-energy regime due to the presence of high-energy electrons and adequate seed photons. The presence of high-energy electrons is established from the location of the synrchrotron peak in the spectral energy distribution of the blazars. The presence of adequate seed photons is determined by the flux in the radio-through-optical wavebands. These are the key ingredients for very high-energy gamma-ray emission in the context of the synchrotron self-Compton model. The redshift of 1ES 0647+250 has been tentatively reported as 0.203 and the redshift of 1ES 0806+524 is 0.138, thus the detection of very high-energy gamma-ray emission from these objects could make significant contributions to the understanding of the extragalactic infrared background light. The analysis of these data relies on standard techniques in very high-energy gamma-ray astronomy, and the results are compared to previously reported upper limits and to theoretical predictions.

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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