Spectral lines of dirty wormholes
arXiv:2512.04274 · doi:10.1103/PhysRevD.110.124039
Abstract
Astrophysical objects like black holes are usually surrounded by matter in the form of accretion disks or jets of matter. These astrophysical scenarios are expected to introduce novel phenomenology in the scattering of particles and fields. Wormholes are viable candidates for exotic compact objects that can mimic some black hole properties. Hence, it is natural to wonder what would happen if the central astrophysical object were a wormhole, instead of a black hole. We investigate the astrophysical environment effect on the absorption of a massless scalar field by a dirty wormhole surrounded by a thick shell of matter. We study null geodesics around these dirty wormholes and analyze under which conditions new pairs of light rings can appear. The presence of new stable light rings allows new quasibound states in the spacetime, apart from the ones trapped near the throat. Thus, the astrophysical environment can introduce deviations in the absorption bands. Remarkably, although heavy and dense distributions of matter are considered surrounding the wormhole, the position of most of the spectral lines in the absorption bands is preserved, indicating that the astrophysical environment cannot hide some fingerprints of the central object.
arXiv comment17 pages, 9 figures
References in corpus (34)
- Observation of Gravitational Waves from a Binary Black Hole Merger
- First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
- GW151226: Observation of Gravitational Waves from a 22-Solar-Mass Binary Black Hole Coalescence
- GW170104: Observation of a 50-Solar-Mass Binary Black Hole Coalescence at Redshift 0.2
- GW170608: Observation of a 19-solar-mass Binary Black Hole Coalescence
- Is the gravitational-wave ringdown a probe of the event horizon?
- Shadows and strong gravitational lensing: a brief review
- Traversable wormholes from surgically modified Schwarzschild spacetimes
- Wormholes supported by a phantom energy
- Testing General Relativity in Cosmology
- Gravitating Non-Abelian Solitons and Black Holes with Yang-Mills Fields
- Light ring stability in ultra-compact objects
- Shadow of a black hole surrounded by dark matter
- The fuzzball proposal for black holes
- Gravitational Lensing by Wormholes
- Stationary black holes and light rings
- Dirty blackholes: Thermodynamics and horizon structure
- Advanced Methods in Black-Hole Perturbation Theory
- Geometry of General Hypersurfaces in Spacetime: Junction Conditions
- Wormhole Shadows
- Junction conditions for F(R)-gravity and their consequences
- Traversable wormholes in Einstein-Dirac-Maxwell theory
- Universality of high-energy absorption cross sections for black holes
- Can different black holes cast the same shadow?
- Abelian Higgs Hair for Black Holes
- Supermassive black holes as possible sources of ultra high energy cosmic rays
- Echoes of compact objects: new physics near the surface and matter at a distance
- Shaping black holes with free fields
- Low-frequency scalar absorption cross sections for stationary black holes
- Double shadows of reflection-asymmetric wormholes supported by positive energy thin-shells
- Scalar absorption: Black holes versus wormholes
- Absorption by dirty black holes: null geodesics and scalar waves
- Asymmetric wormholes in Palatini gravity: Energy conditions, absorption and quasibound states
- Spectral lines of extreme compact objects