Very-high-energy gamma ray emission from AGN jets

AGN 喷流发射极高能伽马射线

• 批准号: 2111961
• 金额: --
• 依托单位: University of Oxford
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2111961
• 关键词: Very; energy; gamma; ray; emission

We have recently developed new theoretical models for the broad-spectrum emission from relativistic jets from Active Galactic Nuclei (AGN; Potter & Cotter 2012, 2013a,b,c). These let us use the gamma-ray observations and those at other wavelengths to investigate the physical properties of the jet and the black hole at its base. At present these models now propose to extend these models to look in particular at (i) rapid variability and flaring in jets and (ii) entrainment of heavy particles as the jets propagate through their host galaxy, and the resulting possibility of hadronic particle processes within the jets, and (iii) propagation of axion-like particles both within the jet and in intergalactic space between the AGN and the Earth.We will investigate how the Cherenkov Telescope Array (CTA) may be used to determine the physical conditions that lead to flaring and the presence, and extent, of emission from hadronic processes.

我们最近为活动星系核相对论喷流的广谱发射开发了新的理论模型（AGN；Potter & Cotter 2012, 2013a,b,c）。这些让我们利用伽马射线观测和其他波长的观测来研究喷流及其底部黑洞的物理特性。目前，这些模型建议扩展这些模型，特别关注（i）喷流中的快速变化和耀斑，（ii）当喷流通过其宿主星系传播时重粒子的夹带，以及由此产生的喷流内强子粒子过程的可能性，以及（iii）类轴子粒子在喷流内以及活动星系核与地球之间的星系际空间中的传播。我们将研究切伦科夫如何 望远镜阵列（CTA）可用于确定导致耀斑的物理条件以及强子过程发射的存在和程度。