J 2019

Analytical representation for metrics of scalarized Einstein-Maxwell black holes and their shadows

KONOPLYA, Roman and Olexandr ZHYDENKO

Basic information

Original name

Analytical representation for metrics of scalarized Einstein-Maxwell black holes and their shadows

Authors

KONOPLYA, Roman (804 Ukraine, guarantor, belonging to the institution) and Olexandr ZHYDENKO (804 Ukraine, belonging to the institution)

Edition

Physical Review D, 2019, 2470-0010

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

RIV identification code

RIV/47813059:19240/19:A0000429

Organization unit

Faculty of Philosophy and Science in Opava

DOI

http://dx.doi.org/10.1103/PhysRevD.100.044015

UT WoS

000480239100008

Keywords in English

black holes; black-hole shadow; Einstein-Maxwell-scalar theory

Tags

, GA19-03950S, RCTPA, RIVOK

Tags

International impact, Reviewed

Links

GA19-03950S, research and development project.
Změněno: 21/4/2020 10:31, Ing. Petra Skoumalová

Abstract

V originále

Here we construct approximate analytical forms for the metric coefficients and fields representing the scalarized Einstein-Maxwell black holes with various couplings of the scalar field, once the parameters of the system are fixed. By increasing approximation order, one can obtain the analytic representation with any desired accuracy, what was tested via calculations of shadows for these black holes by using approximate analytical and accurate numerical metric functions. We share the Mathematica (R) code [https://arxiv.org/src/1907.05551/anc] which allows one to find an appropriate analytical form of the metric for any couplings and values of parameters. Scalarization increases the radius of the black-hole shadow for all the considered coupling functions.
Displayed: 24/12/2024 04:08