SCHEE, Jan and Zdeněk STUCHLÍK. Profiled spectral lines generated in the field of Kerr superspinars. Journal of Cosmology and Astroparticle Physics. GB - Spojené království Velké Británie a, 2013, No 4, 27 pp. ISSN 1475-7516. Available from: https://dx.doi.org/10.1088/1475-7516/2013/04/005.
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Basic information
Original name Profiled spectral lines generated in the field of Kerr superspinars
Authors SCHEE, Jan and Zdeněk STUCHLÍK.
Edition Journal of Cosmology and Astroparticle Physics, GB - Spojené království Velké Británie a, 2013, 1475-7516.
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
WWW www
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.1088/1475-7516/2013/04/005
UT WoS 000318556200005
Keywords in English primordial black holes; GR black holes
Tags UF
Tags International impact, Reviewed
Links GA202/09/0772, research and development project.
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 19/1/2021 09:28.
Abstract
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
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