Massive primordial black holes in contemporary universe

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Massive primordial black holes in contemporary universe. / Dolgov, Alexander D.; Porey, Shiladitya.

In: Bulgarian astronomical journal, Vol. 34, 7, 2021.

Research output: Contribution to journal › Article › peer-review

Author

Dolgov, Alexander D. ; Porey, Shiladitya. / Massive primordial black holes in contemporary universe. In: Bulgarian astronomical journal. 2021 ; Vol. 34.

BibTeX

@article{61bf6c38e9ac4afaaf3f82383029bd12,

title = "Massive primordial black holes in contemporary universe",

abstract = "The parameters of the original log-normal mass spectrum of primordial black holes (PBH) are approximately adjusted on the basis of existing observational data on supermassive black holes in the galactic centers and the mass distribution of the near-solar mass black holes in the Galaxy. Together with the assumption that PBHs make all or a noticeable mass fraction of the cosmological dark matter, it allows to fix the parameters of the original mass spectrum. The predicted, in this way, number density of MACHOs is found to be about an order of magnitude below the observed value. A possible resolution of this controversy may be prescribed to the non-isotropic and inhomogeneous distribution of MACHOs or to the modification of the original spectrum, e.g. assuming a superposition of two-maximum log-normal spectra of PBHs. A competing possibility is that MACHOs are not PBHs but dead primordial compact stars.",

keywords = "primordial black holes, mass spectrum, LIGHT-CURVE CLASSIFICATION, VARIABILITY SURVEYS, DARK-MATTER, HALO, OGLE, LIMITS, SMC",

author = "Dolgov, {Alexander D.} and Shiladitya Porey",

note = "The work of A. Dolgov was supported by the Ministry of Science and Higher Education No. FSUS-2020-0039. The work of S. Porey was supported by the RNF Grant 19-42-02004.",

year = "2021",

language = "English",

volume = "34",

journal = "Bulgarian astronomical journal",

issn = "1313-2709",

publisher = "Institute of Astronomy and Rozhen NAO",

}

RIS

TY - JOUR

T1 - Massive primordial black holes in contemporary universe

AU - Dolgov, Alexander D.

AU - Porey, Shiladitya

N1 - The work of A. Dolgov was supported by the Ministry of Science and Higher Education No. FSUS-2020-0039. The work of S. Porey was supported by the RNF Grant 19-42-02004.

PY - 2021

Y1 - 2021

N2 - The parameters of the original log-normal mass spectrum of primordial black holes (PBH) are approximately adjusted on the basis of existing observational data on supermassive black holes in the galactic centers and the mass distribution of the near-solar mass black holes in the Galaxy. Together with the assumption that PBHs make all or a noticeable mass fraction of the cosmological dark matter, it allows to fix the parameters of the original mass spectrum. The predicted, in this way, number density of MACHOs is found to be about an order of magnitude below the observed value. A possible resolution of this controversy may be prescribed to the non-isotropic and inhomogeneous distribution of MACHOs or to the modification of the original spectrum, e.g. assuming a superposition of two-maximum log-normal spectra of PBHs. A competing possibility is that MACHOs are not PBHs but dead primordial compact stars.

AB - The parameters of the original log-normal mass spectrum of primordial black holes (PBH) are approximately adjusted on the basis of existing observational data on supermassive black holes in the galactic centers and the mass distribution of the near-solar mass black holes in the Galaxy. Together with the assumption that PBHs make all or a noticeable mass fraction of the cosmological dark matter, it allows to fix the parameters of the original mass spectrum. The predicted, in this way, number density of MACHOs is found to be about an order of magnitude below the observed value. A possible resolution of this controversy may be prescribed to the non-isotropic and inhomogeneous distribution of MACHOs or to the modification of the original spectrum, e.g. assuming a superposition of two-maximum log-normal spectra of PBHs. A competing possibility is that MACHOs are not PBHs but dead primordial compact stars.

KW - primordial black holes

KW - mass spectrum

KW - LIGHT-CURVE CLASSIFICATION

KW - VARIABILITY SURVEYS

KW - DARK-MATTER

KW - HALO

KW - OGLE

KW - LIMITS

KW - SMC

M3 - Article

VL - 34

JO - Bulgarian astronomical journal

JF - Bulgarian astronomical journal

SN - 1313-2709

M1 - 7

ER -

ID: 27652772