https://doi.org/10.1140/epjc/s10052-024-12635-7
Regular Article - Theoretical Physics
Observations of orbiting hot spots around scalarized Reissner–Nordström black holes
Center for Theoretical Physics, College of Physics, Sichuan University, 610064, Chengdu, China
Received:
7
February
2024
Accepted:
29
February
2024
Published online:
14
March
2024
This paper investigates the observational signatures of hot spots orbiting scalarized Reissner–Nordström 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.
© The Author(s) 2024
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Funded by SCOAP3.
