EBL Constraints Using a Sample of TeV Gamma-Ray Emitters Measured with the MAGIC Telescopes
EBL Constraints Using a Sample of TeV Gamma-Ray Emitters Measured with the MAGIC Telescopes
复制标题
使用 MAGIC 望远镜测量的 TeV 伽马射线发射器样本进行 EBL 约束
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
M. Acosta
中科院分区：
文献类型：
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作者：
D. Mazin;A. Domínguez;V. Ramazani;T. Hassan;A. Moralejo;M. N. Rosillo;G. Vanzo;M. Acosta
MAGIC是一个由两个成像大气切伦科夫望远镜组成的立体系统，工作在从大约50 GeV到超过50 TeV的甚高能量范围内。在地球上测量的VHE伽马射线光谱带有河外背景光（EBL）的印记，可用于研究EBL密度及其随时间的演变。在过去的几年里，精确测量的几个耀变体的红移范围从z=0.03到z=0.9进行了MAGIC获得强烈的限制EBL密度从单一来源。在本文中，我们提出了一个综合的可能性分析的结果，使用这个广泛的红移范围的样本耀变体，使我们能够探测在不同波长的EBL。对EBL模式的影响和未来的观测与MAGIC的前景进行了讨论。
MAGIC is a stereoscopic system of two Imaging Atmospheric Cherenkov Telescopes operating in the very high energy (VHE) range from about 50 GeV to over 50 TeV. The VHE gamma-ray spectra measured at Earth carry an imprint of the extragalactic background light (EBL) and can be used to study the EBL density and its evolution in time. In the last few years, precision measurements of several blazars in the redshift range from z=0.03 up to z=0.9 were performed with MAGIC obtaining strong limits on the EBL density from single sources. In this paper, we present the results from a combined likelihood analysis using this broad redshift range sample of blazars allowing us to probe the EBL at different wavelengths. The implications on the EBL models and perspectives for future observations with MAGIC are also discussed.