HLADÍK, Jan, Zdeněk STUCHLÍK and Martin URBANEC. Neutrino trapping in braneworld extremely compact stars. General Relativity and Gravitation. US - Spojené státy americké, 2011, vol. 43, No 11, p. 3163-3190, 27 pp. ISSN 0001-7701. Available from: https://dx.doi.org/10.1007/s10714-011-1229-z.
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Basic information
Original name Neutrino trapping in braneworld extremely compact stars
Authors HLADÍK, Jan, Zdeněk STUCHLÍK and Martin URBANEC.
Edition General Relativity and Gravitation, US - Spojené státy americké, 2011, 0001-7701.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Confidentiality degree is not subject to a state or trade secret
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.1007/s10714-011-1229-z
UT WoS 000295982800014
Keywords in English BLACK-HOLES, STATE, SPACETIMES, GEOMETRY, EQUATION, MODELS, FIELD
Tags , LC06014, MSM4781305903
Tags International impact, Reviewed
Links LC06014, research and development project. MSM4781305903, plan (intention).
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 12/4/2021 09:47.
Abstract
Extremely Compact Stars (ECS) contain trapped null geodesics. When such objects enter the evolution period admitting geodetical motion of neutrinos, certain part of neutrinos produced in their interior will be trapped influencing their neutrino luminosity and thermal evolution. We study neutrino trapping in the braneworld ECS, assuming uniform distribution of neutrino emissivity and massless neutrinos. We give the efficiency of the neutrino trapping effects in the framework of the simple model of the internal spacetime with uniform distribution of energy density, and external spacetime described by the Reissner-Nordstrom geometry characterized by the braneworld "tidal" parameter b. For b < 0 the external spacetime is of the black-hole type, while for b> 0 the external spacetime can be of both black-hole and naked-singularity type. Then the ECS surface radius R can be located also above the unstable (outer) photon circular orbit. Such basically new types of the spacetimes strongly alte
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