2025
Photons shells inner structure and causal properties
PUGLIESE, Daniela and Zdeněk STUCHLÍKBasic information
Original name
Photons shells inner structure and causal properties
Authors
Edition
Journal of High Energy Astrophysics, 2025, 2214-4048
Other information
Language
English
Type of outcome
Article in a journal
Field of Study
10308 Astronomy
Country of publisher
Netherlands
Confidentiality degree
is not subject to a state or trade secret
References:
Impact factor
Impact factor: 10.500 in 2024
Marked to be transferred to RIV
Yes
Organization unit
Institute of physics in Opava
UT WoS
EID Scopus
Keywords in English
Lense-Thirring-black holes-accretion;disks-accretion;Hydrodynamics-galaxies: actives
Tags
International impact, Reviewed
Changed: 24/2/2026 13:03, Mgr. Pavlína Jalůvková
Abstract
In the original language
We shed light on some causal properties of the Kerr super-spinnars emerging through the investigation of the spacetimes photon shells. We define inner structure of the spacetime photon shell, constituted by regions distinguished by specific characteristics of the photons paths. These regions are reflected in the singularity shadow boundaries studied, in particular, in relation to repulsive gravity effects, known in a specific class of slowly spinning super-spinnars. Counter-rotating and co-rotating photons are particularly investigated. Super fast spinning solutions are characterized by "faint" shadow boundaries. The properties emerging from this analysis could be observed from specific regions of the spacetimes photon spheres boundaries. Slowly spinning superspinnars, with (dimensionless) spin 1 inner structure, evidenced close to the singularity rotational axis. This structure is analyzed for all view angles.