arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1904.02446astro-ph.HEastro-ph.GA
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射电同步辐射:电子能谱、超新星、微类星体、活动核、星团遗迹和晕; X射线晕

Radio synchrotron emission: electron energy spectrum, supernovae, microquasars, active nuclei, cluster relics and halos; X-ray halos

Nimisha G. Kantharia

摘要:

本文讨论了瞬变高能事件及其宿主,重点讨论了射电同步辐射的特征。悬而未决的问题包括超新星射电辐射两个阶段的起源、活动核中以相对论速度发射的锥形喷流的形成、FR II源中射电热点的形成、星系团中射电遗迹和晕的形成、负责同步辐射的相对论电子布居及其能谱的起源、星系团的组成、星系团中射电辐射的起源、星系团中射电遗迹的形成和星系团中射电遗迹的形成。放射性同步加速器发射等离子体。观测已经帮助建立了一个活动核的经验模型,但活动核中的窄线区、宽线区、尘埃、吸积盘的起源及其与射电喷流和叶瓣的联系在很大程度上仍然未知。本文试图理解并解决这些问题。结果表明:1瞬态爆炸事件中的物质在抛射前必须被激发到逃逸速度。宇宙中一个重要的瞬时爆炸能量来源是热核。超新星的瞬发射电同步辐射来自正电子-电子等离子体,而超新星遗迹的延迟射电同步辐射则是由于相对论质子-电子等离子体与热等离子体的混合; 3喷流和窄线气体是由吸积物质中热核爆发释放的能量从活动核中旋转黑洞赝表面的极区发射的。同步加速器喷流由正电子-电子等离子体组成。

英文摘要:

In this paper, transient high energy events and their hosts are discussed with focus on signatures of radio synchrotron emission. Outstanding questions range from the origin of the two phases of radio emission in supernovae to the formation of conical jets launched at relativistic velocities in active nuclei to the formation of radio hotspots in FR II sources to the formation of radio relics and halos in clusters of galaxies to the origin of the relativistic electron population and its energy spectrum which is responsible for the synchrotron emission to the composition of the radio synchrotron-emitting plasma in these sources. Observations have helped build an empirical model of active nuclei but the origin of the narrow line regions, broad line regions, dust, accretion disk in active nuclei and their connection to radio jets and lobes remains largely unknown. This paper attempts to understand and resolve these. A few results are: 1 The matter ejected in a transient explosive events have to be energised, before ejection, to escape velocity. An important source of transient explosive energy in the universe is thermonuclear. The energy spectrum of the particles energised in such events will follow a normal/gaussian distribution ; 2 The prompt radio synchrotron emission from a supernova is from a positron-electron plasma whereas the delayed radio synchrotron from supernova remnants is due to the relativistic proton-electron plasma mixed with the thermal plasma ; 3 Jets and narrow line gas are launched from the polar regions of the pseudosurface of the rotating black hole in active nuclei by the energy released in a thermonuclear outburst in the accreted matter. Synchrotron jets are composed of positron-electron plasma.

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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