J 2013

Profiled spectral lines generated in the field of Kerr superspinars

SCHEE, Jan and Zdeněk STUCHLÍK

Basic information

Original name

Profiled spectral lines generated in the field of Kerr superspinars

Edition

Journal of Cosmology and Astroparticle Physics, GB - Spojené království Velké Británie a, 2013, 1475-7516

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Organization unit

Faculty of Philosophy and Science in Opava

UT WoS

000318556200005

Keywords in English

primordial black holes; GR black holes

Tags

Tags

International impact, Reviewed

Links

GA202/09/0772, research and development project.
Změněno: 19/1/2021 09:28, Mgr. Pavlína Jalůvková

Abstract

V originále

String Theory suggests existence of primordial Kerr superspinars, extremely compact objects with external spacetime described by the Kerr naked singularity geometry. The primordial Kerr superspinars have to be converted to a near-extreme black hole due to accretion, but they could survive to the era of highly redshifted quasars. We study the shape of the profiled spectral lines generated by radiating rings or the innermost parts of Keplerian discs orbiting the Kerr superspinars. Influence of the superspinar surface location on the profiled lines is also considered. We demonstrate strong difference of the character of the profiled lines generated by radiating rings for all values of the superspinar spin and all values of the inclination angles of the observer when compared to those generated in the field of Kerr black holes. For small and mediate inclination angles there are large quantitative differences in the extension and position of the lines. For large inclination angles even stro