Bibcode
Prieto, Almudena; Rodríguez-Ardila, Alberto; Panda, Swayamtrupta; Marinello, Murilo
Bibliographical reference
Monthly Notices of the Royal Astronomical Society
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2
2022
Citations
17
Refereed citations
12
Description
Using bona-fide black hole (BH) mass estimates from reverberation mapping and the line ratio [Si VI] 1.963$\rm{\mu m}$/Brγbroad as tracer of the AGN ionizing continuum, a novel BH-mass scaling relation of the form log(MBH) = (6.40 ± 0.17) - (1.99 ± 0.37) × log ([Si VI]/Brγbroad), dispersion 0.47 dex, over the BH mass interval, 106-108 M⊙ is found. Following on the geometrically thin accretion disc approximation and after surveying a basic parameter space for coronal lines production, we believe one of main drivers of the relation is the effective temperature of the disc, which is effectively sampled by the [Si VI] 1.963$\rm{\mu m}$ coronal line for the range of BH masses considered. By means of CLOUDY photoionization models, the observed anticorrelation appears to be formally in line with the thin disc prediction Tdisc ∝ MBH-1/4.
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The Central PARSEC of Galaxies using High Spatial Resolution Techniques
PARSEC is a multi-wavelength investigation of the central PARSEC of the nearest galaxies. We work on black-hole accretion and its most energetic manifestations: jets and hot spots, and on its circumnuclear environment conditions for star formation. We resort to the highest available angular resolution observations from gamma-rays to the centimetre
Almudena
Prieto Escudero