{"id":193833,"date":"2024-07-31T18:28:18","date_gmt":"2024-07-31T23:28:18","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2024\/07\/physically-viable-rotating-mass-solutions-surrounding-kerr-black-holes"},"modified":"2024-07-31T18:28:18","modified_gmt":"2024-07-31T23:28:18","slug":"physically-viable-rotating-mass-solutions-surrounding-kerr-black-holes","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2024\/07\/physically-viable-rotating-mass-solutions-surrounding-kerr-black-holes","title":{"rendered":"Physically viable rotating mass solutions surrounding Kerr black holes"},"content":{"rendered":"<p>Many celestial bodies in the Universe are rotating, It is thus of great astrophysical interest to find exact metrics describing rotating, axially symmetric, isolated bodies. In the literature, many methods have been developed (see for example [<a class=\"\" href=\"https:\/\/iopscience.iop.org\/article\/10.1088\/1361-6382\/acfbe3#cqgacfbe3bib1\" <a class=\"\" href=\"https:\/\/iopscience.iop.org\/article\/10.1088\/1361-6382\/acfbe3#cqgacfbe3bib26\" and references therein)  to build physically viable rotating metrics for rotating astrophysical objects. To this purpose, since of the pioneering work in [<a class=\"\" href=\"https:\/\/iopscience.iop.org\/article\/10.1088\/1361-6382\/acfbe3#cqgacfbe3bib27\" anisotropic sources have attracted a lot of interest. In particular, in [<a class=\"\" href=\"https:\/\/iopscience.iop.org\/article\/10.1088\/1361-6382\/acfbe3#cqgacfbe3bib28\" it has been shown that, at least in the limit of slow rotation, the equation of hydrostatic equilibrium for a rotating source is provided by anisotropic fluids. In [<a class=\"\" href=\"https:\/\/iopscience.iop.org\/article\/10.1088\/1361-6382\/acfbe3#cqgacfbe3bib29\" it has been shown that, both for spherical and axially symmetric astrophysical sources, stellar evolution processes, also for initial isotropic conditions, will always tend to form anisotropies in the fluid composing the source.\n\nThe recent achievement of supermassive black hole (SMBH)  at the center of M87 [30] and Sgr A* (our galaxy)  [31] by Event Horizon Telescope Collaboration increased the interest and the necessity to obtain theoretical models mimicking a central SMBH surrounded by a dark matter halo, with particular attention payed to the shadow images of SMBH and orbital motion of the well known S2 star near the event horizon of SMBH at Sgr A* (see for example [32&ndash;45] and references therein). In mainstream approaches, the central SMBH is often depicted in terms of static solutions (see for example [45])  or regular rotating black holes (see for example [35, 46&ndash;52] and references therein). Regular rotating black holes are obtained by means of Gurses&ndash;Gursey algorithm.<\/a><\/a><\/a><\/a><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Many celestial bodies in the Universe are rotating, It is thus of great astrophysical interest to find exact metrics describing rotating, axially symmetric, isolated bodies. In the literature, many methods have been developed (see for example [<\/p>\n","protected":false},"author":661,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[],"class_list":["post-193833","post","type-post","status-publish","format-standard","hentry","category-cosmology"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/193833","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/661"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=193833"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/193833\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=193833"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=193833"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=193833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}