scholarly journals Deformed black hole in Sagittarius A

2021 ◽  
Vol 103 (12) ◽  
Author(s):  
T. Anson ◽  
E. Babichev ◽  
C. Charmousis
Keyword(s):  
Black Hole ◽  
Sagittarius A

scholarly journals The Milky Way's nuclear star cluster and massive black hole

2014 ◽  
Vol 10 (S312) ◽  
pp. 274-281
Author(s):  
Rainer Schödel
Keyword(s):  
Black Hole ◽  
Milky Way ◽  
Current Knowledge ◽  
Star Cluster ◽  
Kinematics And Dynamics ◽  
Central Black Hole ◽  
Massive Black Hole ◽  
Sagittarius A ◽  
Concise Overview ◽  
Galaxy Nucleus

AbstractBecause of its nearness to Earth, the centre of the Milky Way is the only galaxy nucleus in which we can study the characteristics, distribution, kinematics, and dynamics of the stars on milli-parsec scales. We have accurate and precise measurements of the Galactic centre's central black hole, Sagittarius A*, and can study its interaction with the surrounding nuclear star cluster in detail. This contribution aims at providing a concise overview of our current knowledge about the Milky Way's central black hole and nuclear star cluster, at highlighting the observational challenges and limitations, and at discussing some of the current key areas of investigation.

scholarly journals The role of electron heating physics in images and variability of the Galactic Centre black hole Sagittarius A*

2018 ◽  
Vol 478 (4) ◽  
pp. 5209-5229 ◽  
Author(s):  
Andrew Chael ◽  
Michael Rowan ◽  
Ramesh Narayan ◽  
Michael Johnson ◽  
Lorenzo Sironi
Keyword(s):  
Black Hole ◽  
Galactic Centre ◽  
Electron Heating ◽  
Sagittarius A

scholarly journals Oscillation Phenomena in the Disk around the Massive Black Hole Sagittarius A*

2011 ◽  
Vol 63 (5) ◽  
pp. 1093-1116 ◽  
Author(s):  
Makoto Miyoshi ◽  
Zhi-Qiang Shen ◽  
Tomoaki Oyama ◽  
Rohta Takahashi ◽  
Yoshiaki Kato
Keyword(s):  
Black Hole ◽  
Massive Black Hole ◽  
Sagittarius A

scholarly journals Quantum gravity effects around Sagittarius A*

2016 ◽  
Vol 25 (12) ◽  
pp. 1644021 ◽  
Author(s):  
Hal M. Haggard ◽  
Carlo Rovelli
Keyword(s):  
Black Hole ◽  
Quantum Gravity ◽  
Event Horizon ◽  
Sagittarius A ◽  
Vlbi Observations ◽  
Gravity Effects ◽  
Sgr A ◽  
Schwarzschild Radius ◽  
Number Of Authors

Recent VLBI observations have resolved Sagittarius A* at horizon scales. The event horizon telescope is expected to provide increasingly good images of the region around the Schwarzschild radius [Formula: see text] of Sgr A* soon. A number of authors have recently pointed out the possibility that nonperturbative quantum gravitational phenomena could affect the space surrounding a black hole. Here, we point out that the existence of a region around [Formula: see text], where these effects should be maximal.

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