scholarly journals Charged boson stars and black holes with nonminimal coupling to gravity

2018 ◽  
Vol 97 (4) ◽  
Author(s):  
Y. Verbin ◽  
Y. Brihaye
Keyword(s):  
Black Holes ◽  
Nonminimal Coupling ◽  
Boson Stars ◽  
Charged Boson

scholarly journals Spinning boson stars and hairy black holes with nonminimal coupling

2018 ◽  
Vol 27 (11) ◽  
pp. 1843009 ◽  
Author(s):  
Carlos A. R. Herdeiro ◽  
Eugen Radu
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Scalar Field ◽  
Coupling Parameter ◽  
Nonminimal Coupling ◽  
Boson Stars ◽  
Hairy Black Holes ◽  
Black Hole Solutions ◽  
Hairy Black Hole ◽  
Coupled Theory

We obtain spinning boson star solutions and hairy black holes with synchronized hair in the Einstein–Klein–Gordon model, wherein the scalar field is massive, complex and with a nonminimal coupling to the Ricci scalar. The existence of these hairy black holes in this model provides yet another manifestation of the universality of the synchronization mechanism to endow spinning black holes with hair. We study the variation of the physical properties of the boson stars and hairy black holes with the coupling parameter between the scalar field and the curvature, showing that they are, qualitatively, identical to those in the minimally coupled case. By discussing the conformal transformation to the Einstein frame, we argue that the solutions herein provide new rotating boson star and hairy black hole solutions in the minimally coupled theory, with a particular potential, and that no spherically symmetric hairy black hole solutions exist in the nonminimally coupled theory, under a condition of conformal regularity.

scholarly journals Charged boson stars and black holes

2009 ◽  
Vol 675 (1) ◽  
pp. 102-109 ◽  
Author(s):  
Burkhard Kleihaus ◽  
Jutta Kunz ◽  
Claus Lämmerzahl ◽  
Meike List
Keyword(s):  
Black Holes ◽  
Boson Stars ◽  
Charged Boson

GR-AMRVAC code applications: accretion onto compact objects, boson stars versus black holes

2016 ◽  
Vol 33 (15) ◽  
pp. 155010 ◽  
Author(s):  
Z Meliani ◽  
P Grandclément ◽  
F Casse ◽  
F H Vincent ◽  
O Straub ◽  
...  
Keyword(s):  
Black Holes ◽  
Compact Objects ◽  
Boson Stars

scholarly journals Charged boson stars and vacuum instabilities

1993 ◽  
Vol 1 (4) ◽  
pp. 429-448 ◽  
Author(s):  
P. Jetzer ◽  
P. Liljenberg ◽  
B.-S. Skagerstam
Keyword(s):  
Boson Stars ◽  
Charged Boson

Do collapsed boson stars result in new types of black holes?

1997 ◽  
Vol 14 (11) ◽  
pp. 3131-3134 ◽  
Author(s):  
Igor Peña ◽  
Daniel Sudarsky
Keyword(s):  
Black Holes ◽  
Boson Stars

scholarly journals Evaporation of black hole under the effect of quantum gravity

2021 ◽  
Author(s):  
Riasat Ali ◽  
Rimsha Babar ◽  
Muhammad Asgher ◽  
Syed Asif Ali Shah
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Quantum Gravity ◽  
Generalized Uncertainty Principle ◽  
Hawking Temperature ◽  
Charged Black Hole ◽  
Global Monopole ◽  
De Sitter ◽  
Quantum Radiation ◽  
Charged Boson

This paper provides an extension for Hawking temperature of Reissner–Nordström-de Sitter (RN-DS) black hole (BH) with global monopole as well as [Formula: see text]D charged black hole. We consider the black holes metric and investigate the effects of quantum gravity ([Formula: see text]) on Hawking radiation. We investigate the charged boson particles tunneling through the horizon of black holes by using the Hamilton–Jacobi ansatz phenomenon. In our investigation, we study the quantum radiation to analyze the Lagrangian wave equation with generalized uncertainty principle and calculate the modified Hawking temperatures for black holes. Furthermore, we analyze the charge and correction parameter effects on the modified Hawking temperature and examine the stable and unstable condition of RN-DS BH with global monopole as well as [Formula: see text]D charged black hole.

Stability of charged boson stars and catastrophe theory

1992 ◽  
pp. 130-140 ◽  
Author(s):  
Franz E. Schunck ◽  
Fjodor V. Kusmartsev ◽  
Eckehard W. Mielke
Keyword(s):  
Catastrophe Theory ◽  
Boson Stars ◽  
Charged Boson

scholarly journals SUPERMASSIVE BLACK HOLES OR BOSON STARS? HAIR COUNTING WITH GRAVITATIONAL WAVE DETECTORS

2006 ◽  
Vol 15 (12) ◽  
pp. 2209-2216 ◽  
Author(s):  
EMANUELE BERTI ◽  
VITOR CARDOSO
Keyword(s):  
Black Holes ◽  
Laser Interferometer ◽  
Kerr Black Hole ◽  
Space Time ◽  
Multipole Moments ◽  
Boson Stars ◽  
Laser Interferometer Space Antenna ◽  
Kerr Space ◽  
Oscillation Frequencies ◽  
Rule Out

The evidence for supermassive Kerr black holes in galactic centers is strong and growing, but only the detection of gravitational waves will convincingly rule out other possibilities to explain the observations. The Kerr space–time is completely specified by the first two multipole moments: mass and angular momentum. This is usually referred to as the "no-hair theorem," but it is really a "two-hair" theorem. If general relativity is the correct theory of gravity, the most plausible alternative to a supermassive Kerr black hole is a rotating boson star. Numerical calculations indicate that the space–time of rotating boson stars is determined by the first three multipole moments ("three-hair theorem"). The Laser Interferometer Space Antenna (LISA) could accurately measure the oscillation frequencies of these supermassive objects. We propose to use these measurements to "count their hair," unambiguously determining their nature and properties.

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