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arXiv 2108.03992astro-ph.HEgr-qc
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H.E.S.S.对洛伦兹不变性破坏的鲁棒约束,MAGIC和VERITAS数据组合

Robust constraints on Lorentz Invariance Violation from H.E.S.S., MAGIC and VERITAS data combination

Chistelle Levy, Julien Bolmont, Sami Caroff, Markus Gaug, Alasdair Gent, Agnieszka Jacholkowska, Daniel Kerszberg, Tony T. Y. Lin, Manel Martinez, Leyre Nogues,… 展开作者

Chistelle Levy, Julien Bolmont, Sami Caroff, Markus Gaug, Alasdair Gent, Agnieszka Jacholkowska, Daniel Kerszberg, Tony T. Y. Lin, Manel Martinez, Leyre Nogues, A. Nepomuk Otte, Cedric Perennes, Michele Ronco, Tomislav Terzic

摘要:

伽马射线暴、活动星系核和耀斑都是遥远的高能天体物理源,用成像大气切伦科夫望远镜(IACT)可以探测到数十TeV的伽玛射线。由于它们的高度可变性,它们是最合适的来源,能量依赖的时间延迟搜索有关的洛伦兹不变性破坏(LIV)预测的一些量子引力(QG)模型。然而,这些研究需要大量的数据集。三个主要的IACT地面实验- H.E.S.S.之间的工作组,MAGIC和VERITAS -已经成立,以解决这一问题,并结合了第一次在联合分析三个实验收集的所有相关数据。本程序将审查新的标准组合方法。将介绍用于处理来自不同来源类型和仪器的数据的似然技术,以及考虑系统不确定性的方式。该方法已被开发和测试使用模拟的基础上发表的源观测从三个实验。从这些模拟中,该方法的性能将进行评估和新的光将脱落的时间延迟与红移的依赖关系。

英文摘要:

Gamma-Ray bursts, flaring active galactic nuclei and pulsars are distant and energetic astrophysical sources, detected up to tens of TeV with Imaging Atmospheric Cherenkov Telescopes (IACTs). Due to their high variability, they are the most suitable sources for energy-dependent time-delay searches related to Lorentz Invariance Violation (LIV) predicted by some Quantum Gravity (QG) models. However, these studies require large datasets. A working group between the three major IACTs ground experiments - H.E.S.S., MAGIC and VERITAS - has been formed to address this issue and combine for the first time all the relevant data collected by the three experiments in a joint analysis. This proceeding will review the new standard combination method. The likelihood technique used to deal with data from different source types and instruments will be presented, as well as the way systematic uncertainties are taken into account. The method has been developed and tested using simulations based on published source observations from the three experiments. From these simulations, the performance of the method will be assessed and new light will be shed on time delays dependencies with redshift.

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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