How different are shadows of compact objects with and without horizons? - INSPIRE

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How different are shadows of compact objects with and without horizons?

Jan 12, 2023

19 pages

Published in:

JCAP 05 (2023) 036

Published: May 18, 2023

e-Print:

2301.04851 [gr-qc]

DOI:

10.1088/1475-7516/2023/05/036

View in:

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Abstract: (IOP)

In this work, we theoretically assume that a compact object (CO) has a dark surface suchthat this simplified CO has no emissions and no reflections. Considering that the radius of thesurface can be located inside or outside the photon region, which is closely related to the shadowcurve, we investigate whether a CO without an event horizon can produce shadow structures similarto those of black holes and compare the shadows of COs with and without horizons. In particular,by introducing the (possible) observational photon region, we analytically construct an exactcorrespondence between the shadow curves and the impact parameters of photons; we find that thereare indeed several differences between the shadows of COs without horizons and those of blackholes. More precisely, we find that the shadow curve is still determined by the photon regionwhen the radius of the surface is small enough to retain a whole photon region outside theshell. When only part of the photon region remains, the shadow curve is partially determined bythe photon region, and the remaining portion of the shadow curve is partly controlled by theimpact parameters of photons that have a turning point on the surface. When there is no photonregion outside the surface, the shadow curve is totally controlled by the impact parameters ofphotons, which have a turning point on the surface.

Note:

19 pages,5 figures

GR black holes
gravity
photon: impact parameter
surface
horizon
black hole
reflection
structure
shadowing
star: compact

References(68)

Figures(4)

[1]

Black Hole Shadows, Photon Rings, and Lensing Rings

- Phys.Rev.D 100 (2019) 2, 024018
•
e-Print:
- 1906.00873
•
DOI:
- 10.1103/PhysRevD.100.024018

[2]

Influence of quantum correction on black hole shadows, photon rings, and lensing rings

- Chin.Phys.C 45 (2021) 8, 085103
•
e-Print:
- 2008.00657
•
DOI:
- 10.1088/1674-1137/ac06bb

[3]

Fundamental photon orbits: black hole shadows and spacetime instabilities

Pedro V.P. Cunha
(
- Aveiro U. and
- Lisbon, CENTRA
)
,
Carlos A.R. Herdeiro
(
- Aveiro U.
)
,
Eugen Radu
(
- Aveiro U.
)

- Phys.Rev.D 96 (2017) 2, 024039
•
e-Print:
- 1705.05461
•
DOI:
- 10.1103/PhysRevD.96.024039

[4]

Correspondence of eikonal quasinormal modes and unstable fundamental photon orbits for a Kerr-Newman black hole

Peng-Cheng Li
(
- Peking U., CHEP and
- Peking U.
)
,
Tsai-Chen Lee
(
- Peking U.
)
,
Minyong Guo
(
- Peking U., CHEP
)
,
Bin Chen
(
- Peking U., CHEP and
- Peking U. and
- CICQM, Beijing
)

- Phys.Rev.D 104 (2021) 8, 084044
•
e-Print:
- 2105.14268
•
DOI:
- 10.1103/PhysRevD.104.084044

[5]

Universal Properties of Light Rings for Stationary Axisymmetric Spacetimes

- Phys.Rev.D 103 (2021) 10, 104031
•
e-Print:
- 2011.02211
•
DOI:
- 10.1103/PhysRevD.103.104031

[6]

First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric

Event Horizon Telescope

Collaboration

•

Kazunori Akiyama
(
- MIT and
- Natl. Astron. Observ. of Japan and
- Harvard U. (main) and
- Harvard-Smithsonian Ctr. Astrophys.
)

et al.

- Astrophys.J.Lett. 930 (2022) 2, L17
•
e-Print:
- 2311.09484
•
DOI:
- 10.3847/2041-8213/ac6756

[7]

Resolving the Inner Parsec of the Blazar J1924–2914 with the Event Horizon Telescope

Event Horizon Telescope

Collaboration

•

Sara Issaoun
(
)

et al.

- Astrophys.J. 934 (2022) 145
•
e-Print:
- 2208.01662
•
DOI:
- 10.3847/1538-4357/ac7a40

[8]

First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole

Event Horizon Telescope

Collaboration

•

Kazunori Akiyama
(
- NRAO, Charlottesville and
- MIT, Haystack Observ. and
- Natl. Astron. Observ. of Japan and
- Harvard U.
)

et al.

- Astrophys.J.Lett. 875 (2019) 1, L6
•
e-Print:
- 1906.11243
•
DOI:
- 10.3847/2041-8213/ab1141

[9]

Characterizing and Mitigating Intraday Variability: Reconstructing Source Structure in Accreting Black Holes with mm-VLBI

Event Horizon Telescope

Collaboration

•

Avery E. Broderick
(
- Perimeter Inst. Theor. Phys. and
- Waterloo U. and
- Waterloo U., IQC
)

et al.

- Astrophys.J.Lett. 930 (2022) 2, L21
•
DOI:
- 10.3847/2041-8213/ac6584

[10]

Millimeter Light Curves of Sagittarius A* Observed during the 2017 Event Horizon Telescope Campaign

Event Horizon Telescope

Collaboration

•

Maciek Wielgus
(
- Bonn, Max Planck Inst., Radioastron.
)

et al.

- Astrophys.J.Lett. 930 (2022) 2, L19
•
e-Print:
- 2207.06829
•
DOI:
- 10.3847/2041-8213/ac6428

[11]

A Universal Power-law Prescription for Variability from Synthetic Images of Black Hole Accretion Flows

Event Horizon Telescope

Collaboration

•

Boris Georgiev
(
- Waterloo U. and
- Waterloo U., IQC and
- Perimeter Inst. Theor. Phys.
)

et al.

- Astrophys.J.Lett. 930 (2022) 2, L20
•
DOI:
- 10.3847/2041-8213/ac65eb

[12]

Selective Dynamical Imaging of Interferometric Data

Event Horizon Telescope

Collaboration

•

Joseph Farah
(
- Las Cumbres Observ. and
- UC, Santa Barbara
)

et al.

- Astrophys.J.Lett. 930 (2022) 2, L18
•
e-Print:
- 2409.08321
•
DOI:
- 10.3847/2041-8213/ac6615

[13]

Revisiting the shadow of braneworld black holes

Yehui Hou
(
- Peking U., CHEP
)
,
Minyong Guo
(
- Peking U., CHEP
)
,
Bin Chen
(
- Peking U., CHEP and
- Peking U. and
- CICQM, Beijing
)

- Phys.Rev.D 104 (2021) 2, 024001
•
e-Print:
- 2103.04369
•
DOI:
- 10.1103/PhysRevD.104.024001

[14]

Innermost stable circular orbit and shadow of the $4D$ Einstein–Gauss–Bonnet black hole

Minyong Guo
(
- Peking U., CHEP
)
,
Peng-Cheng Li
(
- Peking U., CHEP and
- Peking U., SKLNPT
)

- Eur.Phys.J.C 80 (2020) 6, 588
•
e-Print:
- 2003.02523
•
DOI:
- 10.1140/epjc/s10052-020-8164-7

[15]

The shadow and observation appearance of black hole surrounded by the dust field in Rastall theory

- Chin.Phys.B 32 (2023) 1, 010401
•
DOI:
- 10.1088/1674-1056/ac6ee0

[16]

Black hole images: A review

- Sci.China Phys.Mech.Astron. 66 (2023) 6, 260401
•
e-Print:
- 2301.00113
•
DOI:
- 10.1007/s11433-022-2059-5

[17]

Quantum effects on the black hole shadow and deflection angle in the presence of plasma*

Farruh Atamurotov
(
- Tashkent, CTPA and
- Silesian U., Czech Republic and
- Uzbekistan Natl. U. and
- Unlisted, UZ
)
,
Mubasher Jamil
(
- NUST, Islamabad
)
,
Kimet Jusufi
(
- State U., Tetova
)

- Chin.Phys.C 47 (2023) 3, 035106,
- Chin.Phys.C 47 (2023) 035106
•
e-Print:
- 2212.12949
•
DOI:
- 10.1088/1674-1137/acaef7

Shadow of a regular black hole in scalar-tensor-vector gravity theory

Subhadip Sau
(
- Jhargram Raj Coll.
)
,
John W. Moffat
(
- Perimeter Inst. Theor. Phys. and
- Waterloo U.
)

- Phys.Rev.D 107 (2023) 12, 124003
•
e-Print:
- 2211.15040
•
DOI:
- 10.1103/PhysRevD.107.124003

[19]

Hunting for extra dimensions in the shadow of M87*

Sunny Vagnozzi
(
- Stockholm U., OKC and
- Nordita and
- Cambridge U., KICC
)
,
Luca Visinelli
(
- Nordita and
- Uppsala U.
)

- Phys.Rev.D 100 (2019) 2, 024020
•
e-Print:
- 1905.12421
•
DOI:
- 10.1103/PhysRevD.100.024020

[20]

Photon Regions and Shadows of Kerr-Newman-NUT Black Holes with a Cosmological Constant

- Phys.Rev.D 89 (2014) 12, 124004
•
e-Print:
- 1403.5234
•
DOI:
- 10.1103/PhysRevD.89.124004

[21]

Observing the shadow of Einstein-Maxwell-Dilaton-Axion black hole

Shao-Wen Wei
(
- Lanzhou U.
)
,
Yu-Xiao Liu
(
- Lanzhou U.
)

- JCAP 11 (2013) 063
•
e-Print:
- 1311.4251
•
DOI:
- 10.1088/1475-7516/2013/11/063

[22]

Black hole shadow in an expanding universe with a cosmological constant

- Phys.Rev.D 97 (2018) 10, 104062
•
e-Print:
- 1804.04898
•
DOI:
- 10.1103/PhysRevD.97.104062

[23]

Shadows and photon spheres with spherical accretions in the four-dimensional Gauss–Bonnet black hole

Xiao-Xiong Zeng
(
- Chongqing Jiaotong U., Math. Phys.
)
,
Hai-Qing Zhang
(
- Beihang U.
)
,
Hongbao Zhang
(
)

- Eur.Phys.J.C 80 (2020) 9, 872
•
e-Print:
- 2004.12074
•
DOI:
- 10.1140/epjc/s10052-020-08449-y

[24]

Shadow of a Spinning Black Hole in an Expanding Universe

Peng-Cheng Li
(
- Peking U., CHEP and
- Peking U., SKLNPT
)
,
Minyong Guo
(
- Peking U., CHEP
)
,
Bin Chen
(
- Peking U., CHEP and
- Peking U., SKLNPT and
- CICQM, Beijing
)

- Phys.Rev.D 101 (2020) 8, 084041
•
e-Print:
- 2001.04231
•
DOI:
- 10.1103/PhysRevD.101.084041

[25]

Chaotic shadow of a non-Kerr rotating compact object with quadrupole mass moment

Mingzhi Wang
(
- Hunan Normal U.
)
,
Songbai Chen
(
- Hunan Normal U. and
- Hunan, LDQSQC and
- Yangzhou U.
)
,
Jiliang Jing
(
- Hunan Normal U. and
- Hunan, LDQSQC and
- Yangzhou U.
)

- Phys.Rev.D 98 (2018) 10, 104040
•
e-Print:
- 1801.02118
•
DOI:
- 10.1103/PhysRevD.98.104040

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