scholarly journals Tests of general relativity with the binary black hole signals from the LIGO-Virgo catalog GWTC-1

2019 ◽  
Vol 100 (10) ◽  
Author(s):  
B. P. Abbott ◽  
R. Abbott ◽  
T. D. Abbott ◽  
S. Abraham ◽  
F. Acernese ◽  
...  
Keyword(s):  
General Relativity ◽  
Black Hole ◽  
Tests Of General Relativity ◽  
Binary Black Hole

scholarly journals Tests of general relativity using multiband observations of intermediate mass binary black hole mergers

2021 ◽  
Vol 103 (2) ◽  
Author(s):  
Sayantani Datta ◽  
Anuradha Gupta ◽  
Shilpa Kastha ◽  
K. G. Arun ◽  
B. S. Sathyaprakash
Keyword(s):  
General Relativity ◽  
Black Hole ◽  
Intermediate Mass ◽  
Tests Of General Relativity ◽  
Binary Black Hole

scholarly journals A massive binary black-hole system in OJ 287 and a test of general relativity

Nature ◽  
2008 ◽  
Vol 452 (7189) ◽  
pp. 851-853 ◽  
Author(s):  
M. J. Valtonen ◽  
H. J. Lehto ◽  
K. Nilsson ◽  
J. Heidt ◽  
L. O. Takalo ◽  
...  
Keyword(s):  
General Relativity ◽  
Black Hole ◽  
Binary Black Hole

scholarly journals Universal interferometric signatures of a black hole’s photon ring

2020 ◽  
Vol 6 (12) ◽  
pp. eaaz1310 ◽  
Author(s):  
Michael D. Johnson ◽  
Alexandru Lupsasca ◽  
Andrew Strominger ◽  
George N. Wong ◽  
Shahar Hadar ◽  
...  
Keyword(s):  
General Relativity ◽  
Black Hole ◽  
Event Horizon ◽  
Infinite Sequence ◽  
High Order ◽  
Black Hole Mass ◽  
Tests Of General Relativity ◽  
Supermassive Black Hole ◽  
The Galaxy ◽  
Self Similar

The Event Horizon Telescope image of the supermassive black hole in the galaxy M87 is dominated by a bright, unresolved ring. General relativity predicts that embedded within this image lies a thin “photon ring,” which is composed of an infinite sequence of self-similar subrings that are indexed by the number of photon orbits around the black hole. The subrings approach the edge of the black hole “shadow,” becoming exponentially narrower but weaker with increasing orbit number, with seemingly negligible contributions from high-order subrings. Here, we show that these subrings produce strong and universal signatures on long interferometric baselines. These signatures offer the possibility of precise measurements of black hole mass and spin, as well as tests of general relativity, using only a sparse interferometric array.

scholarly journals Galactic center pulsar as a test of black hole existence and properties

1979 ◽  
Vol 84 ◽  
pp. 401-404
Author(s):  
B. Paczyński ◽  
V. Trimble
Keyword(s):  
General Relativity ◽  
Black Hole ◽  
Galactic Center ◽  
Strong Field ◽  
Field Tests ◽  
Central Black Hole ◽  
X Ray ◽  
Tests Of General Relativity ◽  
Period Orbit ◽  
Short Period

There is a reasonable chance of finding a (probably X-ray) pulsar in a short-period orbit around the galactic center. Such a pulsar can provide a test distinguishing a central black hole from a supermassive object or spinar. It also makes available a good clock in a region of space in which GM/Rc2 is much larger than solar system values, thus allowing strong-field tests of general relativity.

scholarly journals Supermassive black hole tests of general relativity with eLISA

2015 ◽  
Vol 91 (2) ◽  
Author(s):  
Cédric Huwyler ◽  
Edward K. Porter ◽  
Philippe Jetzer
Keyword(s):  
General Relativity ◽  
Black Hole ◽  
Tests Of General Relativity ◽  
Supermassive Black Hole

scholarly journals Tests of general relativity with stellar-mass black hole binaries observed by LISA

2020 ◽  
Vol 101 (10) ◽  
Author(s):  
Alexandre Toubiana ◽  
Sylvain Marsat ◽  
Stanislav Babak ◽  
Enrico Barausse ◽  
John Baker
Keyword(s):  
General Relativity ◽  
Black Hole ◽  
Stellar Mass ◽  
Black Hole Binaries ◽  
Tests Of General Relativity

scholarly journals Quasi-normal modes of static spherically symmetric black holes in f(R) theory

2020 ◽  
Vol 80 (1) ◽  
Author(s):  
Sayak Datta ◽  
Sukanta Bose
Keyword(s):  
Black Holes ◽  
General Relativity ◽  
Black Hole ◽  
Gravitational Wave ◽  
Normal Modes ◽  
Einstein Frame ◽  
Spherically Symmetric ◽  
Inhomogeneous Term ◽  
Binary Black Hole ◽  
Special Case

AbstractWe study the quasi-normal modes (QNMs) of static, spherically symmetric black holes in f(R) theories. We show how these modes in theories with non-trivial f(R) are fundamentally different from those in general relativity. In the special case of $$f(R) = \alpha R^2$$f(R)=αR2 theories, it has been recently argued that iso-spectrality between scalar and vector modes breaks down. Here, we show that such a break down is quite general across all f(R) theories, as long as they satisfy $$f''(0)/(1+f''(0)) \ne 0$$f′′(0)/(1+f′′(0))≠0, where a prime denotes derivative of the function with respect to its argument. We specifically discuss the origin of the breaking of isospectrality. We also show that along with this breaking the QNMs receive a correction that arises when $$f''(0)/(1+f'(0)) \ne 0$$f′′(0)/(1+f′(0))≠0 owing to the inhomogeneous term that it introduces in the mode equation. We discuss how these differences affect the “ringdown” phase of binary black hole mergers and the possibility of constraining f(R) models with gravitational-wave observations. We also find that even though the iso-spectrality is broken in f(R) theories, in general, nevertheless in the corresponding scalar-tensor theories in the Einstein frame it is unbroken.

scholarly journals Binary black hole mergers in gaseous disks: Simulations in general relativity

2011 ◽  
Vol 84 (2) ◽  
Author(s):  
Brian D. Farris ◽  
Yuk Tung Liu ◽  
Stuart L. Shapiro
Keyword(s):  
General Relativity ◽  
Black Hole ◽  
Binary Black Hole

scholarly journals Eccentric binary black-hole mergers: The transition from inspiral to plunge in general relativity

2008 ◽  
Vol 78 (6) ◽  
Author(s):  
Ulrich Sperhake ◽  
Emanuele Berti ◽  
Vitor Cardoso ◽  
José A. González ◽  
Bernd Brügmann ◽  
...  
Keyword(s):  
General Relativity ◽  
Black Hole ◽  
Binary Black Hole
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