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arXiv 2409.15554astro-ph.HE
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时域与多信使天文学中的天体物理暂现源:综述

Astrophysical Transients in Time Domain and Multi-Messenger Astronomy: a review

Maria D. Caballero-Garcia

AI总结:

本文综述了时域与多信使天文学中的高能暂现源,重点探讨了吸积驱动的致密天体及引力波事件,揭示了X/伽马射线与引力波在测定致密天体属性中的关键作用。

摘要:

当前X射线和伽马射线卫星的宽视场、高灵敏度以及宽广的能量覆盖范围,结合其中部分卫星(近期如Swift和Fermi)的高频次观测策略,非常适合对各类银河系及银河系外高能源的时变特性开展史无前例的研究。这些天体类别涵盖了从邻近的耀星到最遥远的活动星系核(AGNs)。本文聚焦于部分最高能事件,即由吸积驱动的事件(黑洞双星、超亮X射线源和活动星系核),直至促成引力波(GWs)首次探测到的事件,即伽马射线暴,期间还涉及备受争议的中等质量黑洞。我们展示了X射线和伽马射线辐射在确定由吸积驱动的系统中致密天体属性(质量、自旋、倾角、日冕高度)方面的重要性,以及在致密天体双星并合情况下LIGO和VIRGO干涉仪的作用。引力波使得测定双星并合中不发光致密天体(黑洞;BHs)的属性成为可能,否则这将几乎无法实现。我们展示了对于中子星并合(NS-BH或NS-NS),电磁辐射依然可能且极其强烈,它正是许多伽马射线暴(千新星)X射线和伽马射线辐射的成因。最近,这些暂现源被发现具有X射线和伽马射线时变模式,这可能为揭示产生它们的并合双星属性提供重要见解,从而为其研究开辟了新视角。

英文摘要:

The wide fields of view, high sensitivity, and broad energy coverage of current X-ray and gamma-ray satellites, coupled with the high cadence observational strategy of some of them (recently Swift and Fermi) have been ideal for carrying out unprecedented studies of the variability properties of different classes of Galactic and extra-Galactic high-energy sources. These classes of objects range from nearby flaring stars to the most distant Active Galactic Nuclei (AGNs). In this paper we focus on some of the most energetic events, i.e. those powered by accretion (black hole binaries, ultra-luminous X-rays and Active Galactic Nuclei) until those leading to the first detections of GravitationalWaves (GWs), i.e. the Gamma-ray Bursts (GRBs), passing through the controversial Inter-Mediate Mass Black-Holes (IMBHs). We show the importance of X-ray and gamma-ray emission for the determination of the properties (mass, spin, inclination, height of the corona) of the compact objects residing in systems powered by accretion and the role of the LIGO and VIRGO interferometers in the case of the (compact objects) binary mergers. Gravitational waves allow the determination of the properties of the non-light-emitting compact objects (black-holes; BHs) in binary mergers (BH-BH) that otherwise would be nearly impossible. We show that for the case of neutron star (NS) mergers (NS-BH or NS-NS) electro-magnetic (EM) emission is still possible, and very powerful, being the responsible for the X-ray and gamma-ray emission of many GRBs (kilonovae). Very recently these transients have been discovered to show X-ray and gamma-ray variability patterns that could lead to very important insights into the properties of the binary mergers that originated them, opening a new view for their study.

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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