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arXiv 2108.09082astro-ph.HEastro-ph.CO
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TeV-emitting BL Lac的光度函数:用VERITAS观测HBL样品

The luminosity function of TeV-emitting BL Lacs: observations of an HBL sample with VERITAS

Manel Errando, VERITAS Collaboration

摘要:

高频峰值BL Lac(HBLs)主导着河外TeV的天空,目前这一代TeV天文台探测到了50多个天体。尽管如此,由于切伦科夫望远镜的观测策略引入的偏差,TeV发射的HBLs作为一个群体的属性知之甚少,限制了我们估计TeV耀变体对扩散中微子,伽马射线和宇宙射线背景的潜在贡献的能力,以及它们在活动星系核后期演化中的作用。VERITAS望远镜阵列设计了一个程序,通过选择36个HBL样本并在不向高通量状态加权的情况下测量其TeV通量,来量化和最大限度地减少观测偏差。这样的调查可以形成测量TeV发射HBLs的光度函数的基础。

英文摘要:

High-frequency-peaked BL Lacs (HBLs) dominate the extragalactic TeV sky, with more than 50 objects detected by the current generation of TeV observatories. Still, the properties of TeV-emitting HBLs as a population are poorly understood due to biases introduced by the observing strategies of Cherenkov Telescopes, limiting our ability to estimate the potential contribution of TeV blazars to the diffuse neutrino, gamma-ray, and cosmic-ray background as well as their role in the late-stage evolution of active galactic nuclei. The VERITAS telescope array has designed a program to quantify and minimize observational biases by selecting a sample of 36 HBLs and measuring their TeV flux at times that are not weighted towards high-flux states. Such a survey could form the basis for a measurement of the luminosity function of TeV-emitting HBLs.

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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