Abstract

It is expected that the astrophysical black holes are surrounded by a luminous accretion flow that is a necessary ingredient for imaging a black hole. In this paper, we study the influence of quintessence dark energy on the shadow images of a Hayward black hole surrounded by the static/infalling spherical accretion flow. We find the effect of the state parameter of quintessence matter on the horizons, photon sphere and impact parameter of the quintessence Hayward black hole. The observed specific intensity of the shadow and also the shadow and photon ring luminosities of the quintessence Hayward black hole with two different spherical accretion flows are investigated. We also use the Event Horizon Telescope observational data of Sgr A* and M87* to constrain the free parameters of quintessence Hayward black hole. Finally, by comparison the results of quintessence Hayward black holes with quintessence Schwarzschild and Hayward black holes we find that the effect of quintessence matter on the black hole shadow is more significant than the regularity effect.

中文翻译：

---

精髓暗能量对球形吸积海沃德黑洞阴影的影响

摘要

预计天体物理黑洞被发光吸积流包围，这是黑洞成像的必要成分。在本文中，我们研究了典型暗能量对被静态/落入球形吸积流包围的海沃德黑洞阴影图像的影响。我们发现了精华物质的状态参数对精华海沃德黑洞视界、光子球层和撞击参数的影响。研究了观测到的阴影的特定强度以及具有两种不同球形吸积流的典型海沃德黑洞的阴影和光子环光度。我们还利用Sgr A*和M87*的事件视界望远镜观测数据来约束典型海沃德黑洞的自由参数。最后，通过将精质海沃德黑洞与精质史瓦西黑洞和海沃德黑洞的结果进行比较，我们发现精质物质对黑洞阴影的影响比规律性效应更为显着。