Splet04. jul. 2016 · 1 Introduction. Primordial black holes (PBHs) are hypothetical objects formed due to gravitational collapse of density perturbations in the early phase of the universe (Hawking 1971; Carr & Hawking 1974).A PBH mass larger than ∼10 −18 M ⊙, where M ⊙ is the solar mass, is enough to prohibit evaporation via the Hawking radiation (Hawking … Splet04. dec. 2024 · 1 INTRODUCTION. Primordial black holes (PBHs) have been a focus of interest for nearly 50 yr (Zel’dovich & Novikov 1967; Hawking 1971; Carr & Hawking 1974).One reason for this is that only PBHs could be small enough for Hawking radiation to be important (Hawking 1974), those smaller than about 10 15 g having evaporated by …
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Splet24. jan. 2024 · We examine the possibility of Primordial Black Holes (PBHs) formation in single-field models of inflation. We show that a one-loop correction to the renormalized primordial power spectrum rules out the possibility of having large mass PBHs. We consider a framework in which PBHs are produced during the transition from Slow Roll (SR) to … Splet23. nov. 2024 · Primordial black holes (PBHs) have been a source of interest for nearly 50 years [], despite the fact that there is still no evidence for them.One reason for this interest is that only PBHs could be small enough for Hawking radiation to be important [].This has not yet been confirmed experimentally and there remain major conceptual puzzles … rifle buttstock cartridge holder
Phys. Rev. D 103, 063025 (2024) - Shining primordial black holes
Splet14. jan. 2024 · In contrast to models in which PBHs are produced from overdense regions, our model avoids the uncertainties of the PBHs production mechanism. PBHs from domain walls with mass around 1020 g may constitute all dark matter, and those with mass around 1034 g can explain the merger events of binary black holes detected by LIGO. Received … SpletName Designation Qualifications Email Extension number; Armstrong, Mr M: Museum Curator, Pretorian Magazine: [email protected]: 250: Botha, Mrs I: Bookkeeper Splet04. okt. 2016 · Abstract The possibility that the dark matter comprises primordial black holes (PBHs) is considered, with particular emphasis on the currently allowed mass windows at 1016–1017 g, 1020–1024 g and 1–103M ⊙. The Planck mass relics of smaller evaporating PBHs are also considered. rifle by your side