Weighing the black hole in the narrow-line Seyfert 1 galaxy, RE J1034+396

Astronomy and Astrophysics – Astronomy

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Galactic Nuclei, Circumnuclear Matter, And Bulges, Active And Peculiar Galaxies And Related Systems, X-Ray Sources, X-Ray Bursts

Scientific paper

The mass of the black hole in the narrow-line Seyfert 1 (NLS1) galaxy RE J1034+396 is measured by fitting an accretion disc and power-law to quasi-simultaneous optical, UV and X-ray spectra. The fits favor accretion onto a low-mass black hole (M~5×106 Msolar) at ~0.3-0.5 of the Eddington rate. They also prefer a disk viewed almost edge-on (75° from the disk axis). The implication of high accretion rate onto a low mass black hole supports the model where NLS1s are the Seyfert-scale analogies of Galactic Black Hole Candidates (GBHCs). .

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