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arXiv 2308.05830astro-ph.GAastro-ph.HE
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模拟超爱丁顿源的类星体光谱——是什么、为什么以及如何做

Modelling the quasar spectra for super-Eddington sources -- The What, the Why and the How

Swayamtrupta Panda, Paola Marziani

AI总结:

本文通过模拟超爱丁顿源的类星体光谱,研究黑洞附近漏斗结构导致的连续辐射各向异性,并结合类星体主序定位超爱丁顿源并约束其宽线区物理条件。

摘要:

活动星系中的宽线主要由光电离过程产生,该过程由环绕超大质量黑洞的复杂几何结构所产生的入射连续谱驱动。需要一个对富含气体的宽线区(BLR)具有有效电离作用的宽带光谱能量分布(SED)模型,以理解最终导致在不同物理条件下发射出发射线谱的各种辐射过程。光电离代码是研究两个方面的有用工具——SED形状的重要性,以及BLR中的物理条件。在这项工作中,我们聚焦于最中心区域连续辐射的各向异性,这是黑洞极近区域形成漏斗状结构的直接结果。在类星体主序的背景下考虑1型活动星系核(AGN)的多样性,使我们能够沿该序列定位超爱丁顿源,并约束其发射线BLR的物理条件。

英文摘要:

Broad lines in active galaxies are primarily emitted by photoionization processes that are driven by the incident continuum arising from a complex geometrical structure circumscribing the supermassive black hole. A model of the broad-band spectral energy distribution (SED) effective in ionizing the gas-rich broad line emitting region (BLR) is needed to understand the various radiative processes that eventually lead to the emission of emission lines from diverse physical conditions. Photoionization codes are a useful tool to investigate two aspects - the importance of the shape of the SED, and the physical conditions in the BLR. In this work, we focus on the anisotropy of continuum radiation from the very centre a direct consequence of the development of a funnel-like structure at regions very close to the black hole. Accounting for the diversity of Type-1 active galactic nuclei (AGNs) in the context of the main sequence of quasars permits us to locate the super Eddington sources along the sequence and constrain the physical conditions of their line-emitting BLR.

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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