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Journal articles
Investigating the mass of the intermediate mass black hole candidate HLX-1 with the slimbh model
Abstract : In this paper we present a comprehensive study of the mass of the intermediate mass black
hole candidate HLX-1 in the galaxy ESO 243-49. We analyse the continuum X-ray spectra
collected by Swift, XMM-Newton, and Chandra
with the slim disc model, slimbh, and estimate the black
hole mass for the full range of inclination (inc = 0°−85°) and spin
(a∗ = 0−0.998). The relativistic slimbh model is
particularly suited to study high luminosity disc spectra as it incorporates the effects
of advection, such as the shift of the inner disc edge towards smaller radii and the
increasing height of the disc photosphere (including relativistic ray-tracing from its
proper location rather than the mid-plane of the disc). We find for increasing values of
inclination that a zero spin black hole has a mass range of 6300−50 900 M⊙ and a
maximally spinning black hole has a mass between 16 900−191 700 M⊙. This is
consistent with previous estimates and reinforces the idea that HLX-1 contains an
intermediate mass black hole.
Cited literature [14 references]
https://hal-cea.archives-ouvertes.fr/cea-01271060
Contributor : Edp Sciences <>
Submitted on : Monday, February 8, 2016 - 5:13:55 PM
Last modification on : Monday, April 5, 2021 - 2:26:14 PM
Long-term archiving on: : Saturday, November 12, 2016 - 1:51:08 PM
Contributor : Edp Sciences <>
Submitted on : Monday, February 8, 2016 - 5:13:55 PM
Last modification on : Monday, April 5, 2021 - 2:26:14 PM
Long-term archiving on: : Saturday, November 12, 2016 - 1:51:08 PM
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