Black Holes in Brans-Dicke Gravity:. a Possible Constituent of Cold Dark Matter?

Details Black Holes in Brans-Dicke Gravity:. a Possible Constituent of Cold Dark Matter? Black Holes in Brans-Dicke Gravity:. a Possible Constituent of Cold Dark Matter?

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002bhap.conf...61k&link_type=abstract

BLACK HOLE ASTROPHYSICS 2002 . Proceedings of the Sixth APCTP Winter School . Held 9-12 January 2002 in Pohang, Korea. Edited by

Astronomy and Astrophysics

Astrophysics

Scientific paper

Existence check of non-trivial, stationary axisymmetric black hole solutions in Brans-Dicke theory of gravity in different direction from those of Penrose, Thorne and Dykla, and Hawking is performed. Namely, working directly with the known explicit spacetime solutions in Brans-Dicke theory, it is found that non-trivial Kerr-Newman-type black hole solutions different from general relativistic solutions could occur for the generic Brans-Dicke parameter values -5/2 ≤ ω < -3/2. Finally, issues like whether these new black holes carry scalar hair and can really arise in nature and if they can, what the associated physical implications would be are discussed carefully.

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