SIMBAD references

2016ApJ...817..154S - Astrophys. J., 817, 154 (2016/February-1)

On the spin of the black hole in IC 10 X-1.

STEINER J.F., WALTON D.J., GARCIA J.A., McCLINTOCK J.E., LAYCOCK S.G.T., MIDDLETON M.J., BARNARD R. and MADSEN K.K.

Abstract (from CDS):

The compact X-ray source in the eclipsing X-ray binary IC 10 X-1 has reigned for years as ostensibly the most massive stellar-mass black hole, with a mass estimated to be about twice that of its closest rival. However, striking results presented recently by Laycock et al. reveal that the mass estimate, based on emission-line velocities, is unreliable and that the mass of the X-ray source is essentially unconstrained. Using Chandra and NuSTAR data, we rule against a neutron-star model and conclude that IC 10 X-1 contains a black hole. The eclipse duration of IC 10 X-1 is shorter and its depth shallower at higher energies, an effect consistent with the X-ray emission being obscured during eclipse by a Compton-thick core of a dense wind. The spectrum is strongly disk-dominated, which allows us to constrain the spin of the black hole via X-ray continuum fitting. Three other wind-fed black hole systems are known; the masses and spins of their black holes are high: M ∼ 10-15M and a* > 0.8. If the mass of IC 10 X-1's black hole is comparable, then its spin is likewise high.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - black hole physics - stars: individual: IC 10 X-1 - X-rays: binaries

Status at CDS:  

Simbad objects: 18

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2020.05.27-17:52:24

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