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arXiv · 2401.10905

Observations of Orbiting Hot Spots around Scalarized Reissner-Nordstr\"om Black Holes

Yiqian Chen·Peng Wang·Haitang Yang
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Abstract

This paper investigates the observational signatures of hot spots orbiting scalarized Reissner-Nordstr\"om black holes, which have been reported to possess multiple photon spheres. In contrast to the single-photon sphere case, hot spots orbiting black holes with two photon spheres produce additional image tracks in time integrated images capturing a complete orbit of hot spots. Notably, these newly observed patterns manifest as a distinct second-highest peak in temporal magnitudes when observed at low inclination angles. These findings offer promising observational probes for distinguishing black holes with multiple photon spheres from their single-photon sphere counterparts.

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Yiqian Chen, Peng Wang, Haitang Yang. 2024-01-04. Observations of Orbiting Hot Spots around Scalarized Reissner-Nordstr\"om Black Holes. https://arxiv.org/abs/2401.10905

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