Observational appearances of an inner extremal regular black hole illuminated by various accretion flows

IF 4.8 2区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

The European Physical Journal C Pub Date : 2025-09-23 DOI:10.1140/epjc/s10052-025-14782-x

Dan Zhang, Guoyang Fu, Xi-Jing Wang, Qiyuan Pan, Xiao-Mei Kuang, Jian-Pin Wu

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Abstract

This paper investigates the observational appearances of an inner extremal regular black hole (IERBH) illuminated by various types of accretion models. The study reveals that when the BH is illuminated by specific accretion flows, the effects of quantum gravity become more pronounced, significantly impacting key observational features such as the shadow radius, photon ring, and total observed intensity. Specifically, the introduction of a more realistic radially infalling spherical accretion flow further accentuates these differences. This dynamic flow results in a darker central region in the BH image due to the Doppler effect, which modulates the observed intensity based on the relative motion of the infalling matter. The shadow radius and total observed intensity are notably affected by the quantum correction parameters, providing additional signatures that distinguish regular BHs from their classical counterparts.

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由各种吸积流照亮的内部极端规则黑洞的观测外观

本文研究了由各种吸积模型所照亮的内极规则黑洞（IERBH）的观测现象。研究表明，当黑洞被特定的吸积流照射时，量子引力的影响变得更加明显，显著地影响了关键的观测特征，如阴影半径、光子环和总观测强度。具体地说，更真实的径向下落球形吸积流的引入进一步强调了这些差异。由于多普勒效应，这种动态流导致黑洞图像中较暗的中心区域，该效应根据入射物质的相对运动调节观测到的强度。阴影半径和观测到的总强度明显受到量子校正参数的影响，这提供了区分规则黑洞和经典黑洞的额外特征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

The European Physical Journal C 物理-物理：粒子与场物理

CiteScore

8.10

自引率

15.90%

发文量

1008

审稿时长

2-4 weeks

期刊介绍： Experimental Physics I: Accelerator Based High-Energy Physics Hadron and lepton collider physics Lepton-nucleon scattering High-energy nuclear reactions Standard model precision tests Search for new physics beyond the standard model Heavy flavour physics Neutrino properties Particle detector developments Computational methods and analysis tools Experimental Physics II: Astroparticle Physics Dark matter searches High-energy cosmic rays Double beta decay Long baseline neutrino experiments Neutrino astronomy Axions and other weakly interacting light particles Gravitational waves and observational cosmology Particle detector developments Computational methods and analysis tools Theoretical Physics I: Phenomenology of the Standard Model and Beyond Electroweak interactions Quantum chromo dynamics Heavy quark physics and quark flavour mixing Neutrino physics Phenomenology of astro- and cosmoparticle physics Meson spectroscopy and non-perturbative QCD Low-energy effective field theories Lattice field theory High temperature QCD and heavy ion physics Phenomenology of supersymmetric extensions of the SM Phenomenology of non-supersymmetric extensions of the SM Model building and alternative models of electroweak symmetry breaking Flavour physics beyond the SM Computational algorithms and tools...etc.