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Title: HLX-1 may be an SS433 system
Authors: King, Andrew
Lasota, J-P
First Published: 4-Aug-2014
Publisher: Oxford University Press (OUP)
Citation: Monthly Notices of the Royal Astronomical Society Letters, 2014, 444 (1), pp. L30-L33 (4)
Abstract: We show that the hyperluminous source HLX-1 may be a stellar-mass binary system like SS433, but seen along its X-ray beams. The precession of these beams gives the ∼1 yr characteristic time-scale of the light curve, while the significant X-ray duty cycle means that the precession angle must be comparable with the beam opening angle, which is of the order of 1 ∘.6. The X-ray light curve appears to result from geometric collimation and scattering as the beam moves through the line of sight. Encouragingly, the distance ∼95 Mpc suggested for HLX-1 is only a few times larger than the minimum distance at which we can expect to view such a highly beamed system along its axis. This picture allows a simple interpretation of HLX-1 as the most extreme known member of the ultraluminous X-ray source population.
DOI Link: 10.1093/mnrasl/slu105
ISSN: 0035-8711
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society Letters ©: 2014 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. Deposited with reference to the publisher’s archiving policy available on the SHERPA/RoMEO website.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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