Black hole shadow to probe modified gravity

被引：35

作者：

Stepanian, A. ^{[1
]}

Khlghatyan, Sh. ^{[1
]}

Gurzadyan, V. G. ^{[1
,2
]}

机构：

[1] Yerevan State Univ, Ctr Cosmol & Astrophys, Alikhanian Natl Lab, Yerevan, Armenia

[2] Sapienza Univ Roma, SIA, Rome, Italy

来源：

EUROPEAN PHYSICAL JOURNAL PLUS | 2021年 / 136卷 / 01期

关键词：

COSMOLOGICAL CONSTANT;

D O I：

10.1140/epjp/s13360-021-01119-2

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the black hole's shadow for Schwarzschild-de Sitter and Kerr-de Sitter metrics with the contribution of the cosmological constant Lambda. Based on the reported parameters of the M87* black hole shadow, we obtain constraints for the Lambda and show the agreement with the cosmological data. It is shown that the coupling of the Lambda -term with the spin parameter reveals peculiarities for the photon spheres and hence for the shadows. Within the parametrized post-Newtonian formalism, the constraint for the corresponding Lambda -determined parameter is obtained.

引用

页数：7

共 50 条

[1] Observing the shadow of modified gravity black hole [J].

Alhamzawi, Ahmed .

INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2017, 26 (14)

[2] Black hole shadow in symmergent gravity [J].

Cimdiker, Irfan ;

Demir, Durmus ;

Ovgun, Ali .

PHYSICS OF THE DARK UNIVERSE, 2021, 34

[3] Cylindrical black hole solutions in f(R) and f(R, A, Aμν Aμ°ν) modified gravity [J].

Ahmed, Faizuddin ;

Bouzenada, Abdelmalek .

PHYSICS OF THE DARK UNIVERSE, 2025, 48

[4] Evolution of primordial black hole in f(T) gravity with modified Chaplygin gas [J].

Debnath, Ujjal ;

Paul, Bikash Chandra .

ASTROPHYSICS AND SPACE SCIENCE, 2015, 355 (01) :147-153

[5] Higher Order Gravity Theories and Their Black Hole Solutions [J].

Charmousis, C. .

PHYSICS OF BLACK HOLES: A GUIDED TOUR, 2009, 769 :299-+

[6] Modified cosmic Chaplygin AdS black hole [J].

Debnath, Ujjal ;

Pourhassan, Behnam ;

Sakalli, Izzet .

MODERN PHYSICS LETTERS A, 2022, 37 (14)

[7] Shadow cast by a rotating charged black hole in quintessential dark energy [J].

Khan, Saeed Ullah ;

Ren, Jingli .

PHYSICS OF THE DARK UNIVERSE, 2020, 30

[8] Black Hole Singularity Resolution in Unimodular Gravity from Unitarity [J].

Gielen, Steffen ;

Menendez-Pidal, Lucia .

PHYSICAL REVIEW LETTERS, 2025, 134 (10)

[9] BTZ black hole in R plus α A gravity and thermodynamic properties [J].

Ahmed, Faizuddin ;

Guvendi, Abdullah .

CHINESE JOURNAL OF PHYSICS, 2024, 89 :69-85

[10] Black Hole Entropy for Two Higher Derivative Theories of Gravity [J].

Bellini, Emilio ;

Di Criscienzo, Roberto ;

Sebastia, Lorenzo ;

Zerbini, Sergio .

ENTROPY, 2010, 12 (10) :2186-2198

← 1 2 3 4 5 →