Detailed Information on Publication Record
2024
Light escape cones in the locally nonrotating reference frames of the Kerr-de Sitter superspinars and related superspinar shadows
CHARBULÁK, Daniel and Zdeněk STUCHLÍKBasic information
Original name
Light escape cones in the locally nonrotating reference frames of the Kerr-de Sitter superspinars and related superspinar shadows
Authors
CHARBULÁK, Daniel (203 Czech Republic, belonging to the institution) and Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution)
Edition
Physical Review D, 2024, 2470-0010
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:
Impact factor
Impact factor: 5.000 in 2022
Organization unit
Institute of physics in Opava
UT WoS
001386383200005
Keywords in English
M87 event horizon; equatorial circular orbits;telescope results VI;black-hole;cosmological constant;naked singularities;photon motion;in-field;particles;dust
Tags
Tags
International impact, Reviewed
Změněno: 12/2/2025 10:22, Mgr. Pavlína Jalůvková
Abstract
V originále
The construction of local escape cones and their complementary cones, related to the locally nonrotating frames (LNRFs) orbiting superspinars with the external field described by the Kerr-de Sitter (KdS) naked singularity (NS) spacetimes, is described for all possible classes of the KdS NS spacetimes and all possible positions of the photon emitter. The notion of the local escape cones is then applied to construct the shadow of the KdS superspinars related to the distant static observers represented by the LNRFs located near the so-called static radius where the spacetime is close to the asymptotically flat region of the Kerr spacetimes. The shadow construction is focused on the KdS superspinars limited by the cosmological and astrophysical restrictions on the spacetime parameters, namely, the superspinar dimensionless spin and the dimensionless cosmological parameter relating the cosmological constant and the superspinar's mass.