Black hole tidal charge constrained by strong gravitational lensing

Z. S. Horváth, L. A. Gergely

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Spherically symmetric brane black holes have tidal charge which modifies both weak and strong lensing characteristics. Even if lensing measurements are in agreement with a Schwarzschild lens, the margin of error of the detecting instrument allows for a certain tidal charge only. In this paper we derive the respective constraint on the tidal charge of the supermassive black hole (SMBH) in the center of our galaxy, based on the radius of the first relativistic Einstein ring due to strong lensing. We find that even if general relativistic predictions are confirmed by high precision strong lensing measurements, SMBHs could have a much larger tidal charge than the Sun or neutron stars.

Original languageEnglish
Pages (from-to)1047-1050
Number of pages4
JournalAstronomische Nachrichten
Volume334
Issue number9
DOIs
Publication statusPublished - Nov 1 2013

Keywords

  • Black hole physics
  • Galaxy: center
  • Gravitational lensing
  • Instrumentation: high angular resolution

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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