Supermassive primordial black holes at high redshifts

Standard

Supermassive primordial black holes at high redshifts. / Dubrovich, V. K.; Eroshenko, Yu N.; Grachev, S. I.

In: International Journal of Modern Physics D, 2020.

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

BibTeX

@article{77450be61fdc4948adefc9b3d6ac9a60,

title = "Supermassive primordial black holes at high redshifts",

abstract = "We consider some properties and possible observational manifestations of the very heavy primordial black holes (PBHs), with masses 109 - 1010)M . These black holes should be surrounded by the dense dark matter and baryonic halos even at early cosmological epochs. There are mechanisms as for radiation emission in the centers due to accretion and for deep absorption of relic radiation at the periphery of the halos. We calculate the absorption profile in the 21cm line of atomic hydrogen by solving the equations of radiation transfer through the baryonic halo around a PBH. The calculations show that a spherical absorbing layer appears around the object, which can be observed with radio telescopes. Also, at some epochs, shock waves may form at the periphery of the objects. The accelerated charged particles can radiate in radio frequency band, so it is possible that these objects can explain the recently discovered radio circles.",

keywords = "cosmic microwave background, Primordial black holes, radio astronomy",

author = "Dubrovich, {V. K.} and Eroshenko, {Yu N.} and Grachev, {S. I.}",

note = "Publisher Copyright: {\textcopyright} 2021 World Scientific Publishing Company.",

year = "2020",

doi = "10.1142/S0218271821400010",

language = "English",

journal = "International Journal of Modern Physics D",

issn = "0218-2718",

publisher = "WORLD SCIENTIFIC PUBL CO PTE LTD",

}

RIS

TY - JOUR

T1 - Supermassive primordial black holes at high redshifts

AU - Dubrovich, V. K.

AU - Eroshenko, Yu N.

AU - Grachev, S. I.

PY - 2020

Y1 - 2020

N2 - We consider some properties and possible observational manifestations of the very heavy primordial black holes (PBHs), with masses 109 - 1010)M . These black holes should be surrounded by the dense dark matter and baryonic halos even at early cosmological epochs. There are mechanisms as for radiation emission in the centers due to accretion and for deep absorption of relic radiation at the periphery of the halos. We calculate the absorption profile in the 21cm line of atomic hydrogen by solving the equations of radiation transfer through the baryonic halo around a PBH. The calculations show that a spherical absorbing layer appears around the object, which can be observed with radio telescopes. Also, at some epochs, shock waves may form at the periphery of the objects. The accelerated charged particles can radiate in radio frequency band, so it is possible that these objects can explain the recently discovered radio circles.

AB - We consider some properties and possible observational manifestations of the very heavy primordial black holes (PBHs), with masses 109 - 1010)M . These black holes should be surrounded by the dense dark matter and baryonic halos even at early cosmological epochs. There are mechanisms as for radiation emission in the centers due to accretion and for deep absorption of relic radiation at the periphery of the halos. We calculate the absorption profile in the 21cm line of atomic hydrogen by solving the equations of radiation transfer through the baryonic halo around a PBH. The calculations show that a spherical absorbing layer appears around the object, which can be observed with radio telescopes. Also, at some epochs, shock waves may form at the periphery of the objects. The accelerated charged particles can radiate in radio frequency band, so it is possible that these objects can explain the recently discovered radio circles.

KW - cosmic microwave background

KW - Primordial black holes

KW - radio astronomy

UR - http://www.scopus.com/inward/record.url?scp=85101596304&partnerID=8YFLogxK

U2 - 10.1142/S0218271821400010

DO - 10.1142/S0218271821400010

M3 - Article

AN - SCOPUS:85101596304

JO - International Journal of Modern Physics D

JF - International Journal of Modern Physics D

SN - 0218-2718

M1 - 2140001

ER -

ID: 86549162