Upper limits on the size of a primordial black hole
نویسندگان
چکیده
منابع مشابه
a study on the effectiveness of textual modification on the improvement of iranian upper-intermediate efl learners’ reading comprehension
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Primordial Black Hole Baryogenesis
We reconsider the possibility that the observed baryon asymmetry was generated by the evaporation of primordial black holes that dominated the early universe. We present a simple derivation showing that the baryon asymmetry is insensitive to the initial black hole density and the cosmological model but is sensitive to the temperature-dependence of the CP and baryon-violating (or lepton-violatin...
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Primordial stars are likely to be very massive ≥ 30 M⊙, form in isolation, and will likely leave black holes as remnants in the centers of their host dark matter halos in the mass range 10 − 10 M⊙. Such early black holes, at redshifts z∼ 10, could be the seed black holes for the many supermassive black holes found in galaxies in the local universe. If they exist, their mergers with nearby super...
متن کاملPrimordial Structure of Massive Black Hole Clusters
We describe a mechanism of the primordial black holes formation that can explain the existence of a population of supermassive black holes in galactic bulges. The mechanism is based on the formation of black holes from closed domain walls. The origin of such domain walls could be a result of the evolution of an effectively massless scalar field during inflation. The initial non-equilibrium dist...
متن کاملDynamics of Primordial Black Hole Formation
Primordial overdensities seeded, for instance, by inflation or topological defects may collapse to primordial black holes (PBHs) during early radiation-dominated eras if they exceed a critical threshold [1,2]. This particular PBH formation process, which is examined in this paper, occurs when an initially super-horizon size region of order unity overdensity crosses into the horizon and recollap...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2005
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.71.104009