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Red quasars: estimation of SMBH spin, mass and accretion disk inclination angle

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arxiv 2410.04851 v1 pith:Q6AZBD62 submitted 2024-10-07 astro-ph.HE

M.Yu. Piotrovich , S.D. Buliga , T.M. Natsvlishvili This is my paper · ORCID
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keywords s82xspinanglediskestimatedf2msinclinationmass
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We estimated values of spin, mass and inclination angle for sample of 42 red quasars. Our estimations show that 2 objects: F2MS~J1113+1244 and F2MS~J1434+0935 with highest Eddington ratios may have geometrically thick disk. Six objects: SDSS~J0036-0113, S82X~0040+0058, S82X~0118+0018, S82X~0303-0115, FBQS~J1227+3214, S82X~2328-0028 may have "retrograde" rotation. Analysis of estimated spin values shows that red quasar population may contain Seyfert galaxies and NLS1.

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  1. Estimating the spins of supermassive black holes in distant ultraluminous quasars

    astro-ph.HE 2025-05 conditional novelty 5.0 of 10

    Using radiative-efficiency scaling relations, the authors derive mostly a>0.9 spins for 6<z<7.5 ultraluminous quasars and interpret spin-mass-redshift correlations as evidence of high-rate disk accretion.

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