KONOPLYA, Roman and Olexandr ZHYDENKO. Analytical representation for metrics of scalarized Einstein-Maxwell black holes and their shadows. Physical Review D. 2019, vol. 100, No 4, p. "044015-1"-"044015-8", 8 pp. ISSN 2470-0010. Available from: https://dx.doi.org/10.1103/PhysRevD.100.044015.
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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
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW 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 FÚ, GA19-03950S, RCTPA, RIVOK
Tags International impact, Reviewed
Links GA19-03950S, research and development project.
Changed by Changed by: Ing. Petra Skoumalová, učo 50554. Changed: 21/4/2020 10:31.
Abstract
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.
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