2019
Anisotropic ultracompact Schwarzschild star by gravitational decoupling
OVALLE ARAYA, Jorge Iván; Nelson Camilo POSADA AGUIRRE and Zdeněk STUCHLÍKBasic 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
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
References:
Impact factor
Impact factor: 3.071
RIV identification code
RIV/47813059:19240/19:A0000412
Organization unit
Faculty of Philosophy and Science in Opava
UT WoS
000488086200002
EID Scopus
2-s2.0-85073541288
Keywords in English
black-hole; interior solution; gravitational-decoupling; gravastar
Tags
Tags
International impact, Reviewed
Links
GA19-03950S, research and development project.
Changed: 21/4/2020 10:27, Ing. Petra Skoumalová
Abstract
V originále
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.