Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › Рецензирование
Superluminous quasars and mesolensing. / Raikov, A. ; Lovyagin, N. ; Yershov, V. .
Astronomy at the epoch of multimessenger studies: Proceedings of the VAK-2021 conference, Aug 23–28, 2021. M : Janus-K, 2022. стр. 392-394.Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › Рецензирование
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TY - GEN
T1 - Superluminous quasars and mesolensing
AU - Raikov, A.
AU - Lovyagin, N.
AU - Yershov, V.
PY - 2022
Y1 - 2022
N2 - Observed magnitudes of many quasars with redshifts exceeding z = 5 correspond to luminosities Lbol > 1014 L⊙. Thestandard mechanism of quasar energy release by accretion suggests that masses of superluminous quasars should exceed1010 M⊙. On the other hand, the age of these objects in the standard cosmological model is below one billion years, whichis too short to explain their formation in the early Universe. Many quasars are known to be gravitationally lensed; showingmultiple images of the same object. In the case of remote quasars with no multiple images, it is still possible that they arealso gravitationally lensed by foreground objects of intermediate masses, such as globular clusters or dwarf galaxies. Suchmesolensing would result in essential amplification of quasar brightnesses, subject to geometrical configuration betweenthe lens and the lensed object. Here we estimate the fraction of quasars whose brightness might have been amplified bygravitational lensing.
AB - Observed magnitudes of many quasars with redshifts exceeding z = 5 correspond to luminosities Lbol > 1014 L⊙. Thestandard mechanism of quasar energy release by accretion suggests that masses of superluminous quasars should exceed1010 M⊙. On the other hand, the age of these objects in the standard cosmological model is below one billion years, whichis too short to explain their formation in the early Universe. Many quasars are known to be gravitationally lensed; showingmultiple images of the same object. In the case of remote quasars with no multiple images, it is still possible that they arealso gravitationally lensed by foreground objects of intermediate masses, such as globular clusters or dwarf galaxies. Suchmesolensing would result in essential amplification of quasar brightnesses, subject to geometrical configuration betweenthe lens and the lensed object. Here we estimate the fraction of quasars whose brightness might have been amplified bygravitational lensing.
U2 - 10.51194/VAK2021.2022.1.1.160
DO - 10.51194/VAK2021.2022.1.1.160
M3 - Conference contribution
SN - 9785803708483
SP - 392
EP - 394
BT - Astronomy at the epoch of multimessenger studies
PB - Janus-K
CY - M
T2 - Всероссийская астрономическая конференция 2021 "Астрономия в эпоху многоканальных исследований"
Y2 - 23 August 2021 through 28 August 2021
ER -
ID: 107314035