… The observational constraints for primordial thermal 2-2hole remnants as dark matter will
be explored in this paper. For this purpose, thermodynamic features of 2-2-holes sourced by a …

… black holes with surrounding matter … black holes satisfy relation (1) (with Q = 0) in general.
In this Letter, we investigate axisymmetric and stationary black holes with surrounding matter …

… black holes (PBHs) represent a natural candidate for one of the components of the dark
matter … evaporation and the accretion of the surrounding matter, effects which could leave an …

… matter overdensities around black holes; in Sec. 2 I describe the evolution of a black holes
binary in presence of dark matter; … 3 I comment on the prospects for characterizing dark matter …

… In section 2, we recall Weyl’s coordinates which cover an exterior vacuum vicinity of the
black hole. In order to describe the black hole interior we introduce Boyer–Lindquist-type …

… dark matter scenario, and sufficiently large PBHs might provide seeds for the supermassive
black holes … black holes bigger than 10 12 M ⊙ could provide an interesting dark component. …

… not make up most of the dark matter. We show that if most dark matter is a thermal relic, then
… Assuming enough particle dark matter exists to form UCMHs, we find that Ω PBH ≲ 10 −4 (…

… black holes unstable in scalar-tensor gravity, both associated with the presence of matter in
the vicinity of the black hole … in realistic, astrophysical black holes in scalar-tensor theories. …

… r_s\) along with a dark matter core radius surrounding the black hole. In addition to that, …
matter surrounding the black hole. We show that in order to have significant effect of dark matter …

… We consider accretion of matter onto a low mass black hole surrounded by ionized medium.
… electrons, the black hole would acquire positive electric charge. If the black hole’s mass is …