Very-high-energy gamma ray emission from AGN jets

我们最近开发了新的理论模型，用于研究活动星系核相对论性喷流的广谱辐射（AGN; Potter & Cotter 2012，2013 a，B，c）。这让我们可以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性质。目前，这些模型现在建议扩展这些模型，特别是考虑（i）喷流中的快速变化和耀斑，以及（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）轴子的传播-在喷流和AGN与地球之间的星系际空间中，我们将研究切伦科夫望远镜阵列（CTA）可以用来确定导致耀斑的物理条件和强子过程中发射的存在和程度。

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.