Detailed Information on Publication Record
2021
Neutrino trapping in extremely compact Tolman VII spacetimes
STUCHLÍK, Zdeněk, Jan HLADÍK, Jaroslav VRBA and Nelson Camilo POSADA AGUIRREBasic information
Original name
Neutrino trapping in extremely compact Tolman VII spacetimes
Authors
STUCHLÍK, Zdeněk (203 Czech Republic, belonging to the institution), Jan HLADÍK (203 Czech Republic, belonging to the institution), Jaroslav VRBA (203 Czech Republic, belonging to the institution) and Nelson Camilo POSADA AGUIRRE (170 Colombia, belonging to the institution)
Edition
European Physical Journal C, New York (USA), SPRINGER, 2021, 1434-6044
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:
RIV identification code
RIV/47813059:19630/21:A0000144
Organization unit
Institute of physics in Opava
UT WoS
000691299500002
Keywords in English
ROTATING RELATIVISTIC STARS;EQUATIONS;SPHERES
Tags
International impact, Reviewed
Změněno: 8/2/2022 14:54, Mgr. Pavlína Jalůvková
Abstract
V originále
xtremely compact objects trap gravitational waves or neutrinos, assumed to move along null geodesics in the trapping regions. The trapping of neutrinos was extensively studied for spherically symmetric extremely compact objects constructed under the simplest approximation of the uniform energy density distribution, with radius located under the photosphere of the external spacetime; in addition, uniform emissivity distribution of neutrinos was assumed in these studies. Here we extend the studies of the neutrino trapping for the case of the extremely compact Tolman VII objects representing the simplest generalization of the internal Schwarzschild solution with uniform distribution of the energy density, and the correspondingly related distribution of the neutrino emissivity that is thus again proportional to the energy density; radius of such extremely compact objects can overcome the photosphere of the external Schwarzschild spacetime. In dependence on the parameters of the Tolman VII spacetimes, we determine the "local" and "global" coefficients of efficiency of the trapping and demonstrate that the role of the trapping is significantly stronger than in the internal Schwarzschild spacetimes. Our results indicate possible influence of the neutrino trapping in cooling of neutron stars.