OVALLE ARAYA, Jorge Iván, Nelson Camilo POSADA AGUIRRE and Zdeněk STUCHLÍK. Anisotropic ultracompact Schwarzschild star by gravitational decoupling. Classical and Quantum Gravity. 2019, vol. 36, No 20, p. "205010-1"-"205010-18", 18 pp. ISSN 0264-9381. Available from: https://dx.doi.org/10.1088/1361-6382/ab4461.
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Basic information
Original name Anisotropic ultracompact Schwarzschild star by gravitational decoupling
Authors OVALLE ARAYA, Jorge Iván (152 Chile, guarantor, belonging to the institution), Nelson Camilo POSADA AGUIRRE (170 Colombia, belonging to the institution) and Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution).
Edition Classical and Quantum Gravity, 2019, 0264-9381.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher United Kingdom of Great Britain and Northern Ireland
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/47813059:19240/19:A0000412
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.1088/1361-6382/ab4461
UT WoS 000488086200002
Keywords in English black-hole; interior solution; gravitational-decoupling; gravastar
Tags , 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 10:27.
Abstract
We employ the minimal geometric deformation approach to gravitational decoupling (MGD-decoupling) in order to generate an exact anisotropic and non-uniform version of the ultracompact Schwarzschild star, or "gravastar", proposed by Mazur and Mottola. This new system represents an ultracompact configuration of radius R_S = 2M whose interior metric can be matched smoothly to a conformally deformed Schwarcschild exterior. Remarkably, the model satisfies some of the basic requirements to describe a physically acceptable stellar model, such as a positive density everywhere and decreasing monotonously from the centre, as well as a non-uniform and monotonic pressure.
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