Please use this identifier to cite or link to this item:
Title: Shadows and lensing of black holes immersed in strong magnetic fields
Author: Junior, Haroldo C. D. Lima
Cunha, Pedro V. P.
Herdeiro, Carlos A. R.
Crispino, Luís C. B.
Issue Date: 15-Aug-2021
Publisher: American Physical Society
Abstract: We investigate the null geodesic flow and in particular the light rings (LRs), fundamental photon orbits (FPOs) and shadows of a black hole (BH) immersed in a strong, uniform magnetic field, described by the Schwarzschilld-Melvin electrovacuum solution. The empty Melvin magnetic Universe contains a tube of planar LRs. Including a BH, for weak magnetic fields, the shadow becomes oblate, whereas the intrinsic horizon geometry becomes prolate. For strong magnetic fields (overcritical solutions), there are no LRs outside the BH horizon, a result explained using topological arguments. This feature, together with the light confining structure of the Melvin universe yields panoramic shadows, seen (almost) all around the equator of the observer’s sky. Despite the lack of LRs, there are FPOs, including polar planar ones, which define the shadow edge. We also observe and discuss chaotic lensing, including in the empty Melvin universe, and multiple disconnected shadows.
Peer review: yes
DOI: 10.1103/PhysRevD.104.044018
ISSN: 2470-0010
Appears in Collections:CIDMA - Artigos
DMat - Artigos
GGDG - Artigos

Files in This Item:
File Description SizeFormat 
PRD104(2021)044018.pdf4.38 MBAdobe PDFView/Open

Formato BibTex MendeleyEndnote Degois 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.