Observational signature of a near-extremal Kerr-Sen black hole in the heterotic string theory

We analytically study the optical appearance of an isotropically emitter orbiting near the horizon of a near-extremely rotating Kerr-Sen (KS) black hole which is an electrically charged black hole arising in heterotic string theory. We study the influence of the Sen charge on the observational quant...

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Veröffentlicht in:	Physical review. D 2020-01, Vol.101 (2), p.1, Article 024055
Hauptverfasser:	Guo, Minyong, Song, Shupeng, Yan, Haopeng
Format:	Artikel
Sprache:	eng
Schlagworte:	Black holes Charging Emitters Event horizon Red shift Relativity Rotation String theory
Online-Zugang:	Volltext
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