Zobrazeno 1 - 10
of 211
pro vyhledávání: '"Chen, YiQian"'
This study investigates polarized images of an equatorial synchrotron-emitting ring surrounding hairy black holes within the Einstein-Maxwell-scalar theory. Our analysis demonstrates qualitative similarities between the polarization patterns of hairy
Externí odkaz:
http://arxiv.org/abs/2409.05304
In this paper, we study the observational signatures of traversable Simpson-Visser wormholes illuminated by luminous celestial spheres and orbiting hot spots. We demonstrate that when light sources and observers are on the same side of the wormholes,
Externí odkaz:
http://arxiv.org/abs/2408.07350
Autor:
Wu, Tianshu, Chen, Yiqian
This paper delves into observable signatures of hot spots orbiting Reissner-Nordstr\"om (RN) black holes and naked singularities. In a RN black hole case, we find two discernible lensing image tracks in time integrated images capturing a complete orb
Externí odkaz:
http://arxiv.org/abs/2402.06413
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 blac
Externí odkaz:
http://arxiv.org/abs/2401.10905
It has been reported that the photon ring structure in black hole images produces strong and universal interferometric signatures on long interferometric baselines, holding promise for measuring black hole parameters and testing general relativity. T
Externí odkaz:
http://arxiv.org/abs/2312.10304
Recently, it has been reported that photons can traverse naked singularities in the Janis-Newman-Winicour and Born-Infeld spacetimes when these singularities are appropriately regularized. In this paper, we investigate observational signatures of hot
Externí odkaz:
http://arxiv.org/abs/2309.04157
The Janis-Newman-Winicour (JNW) spacetime can describe a naked singularity with a photon sphere that smoothly transforms into a Schwarzschild black hole. Our analysis reveals that photons, upon entering the photon sphere, converge to the singularity
Externí odkaz:
http://arxiv.org/abs/2309.00905
We examine the gravitational lensing phenomenon caused by photon spheres in the Born-Infeld naked singularity spacetime, where gravity is coupled with Born-Infeld electrodynamics. Specifically, our focus lies on relativistic images originating from a
Externí odkaz:
http://arxiv.org/abs/2305.17411
It has been recently reported that, at late times, the total luminosity of a star freely falling in black holes decays exponentially with time, and one or two series of flashes with decreasing intensity are seen by a specific observer, depending on t
Externí odkaz:
http://arxiv.org/abs/2210.10948
Photon spheres play a pivotal role in the imaging of luminous objects near black holes. In this paper, we examine observational appearances of a star freely falling in hairy black holes, which can possess one or two photon spheres outside the event h
Externí odkaz:
http://arxiv.org/abs/2206.13705