The column density towards LMC X-1
Hanke M, Wilms J, Nowak MA, Barragan L, Schulz NS (2010)
Publication Status: Published
Publication Type: Journal article
Publication year: 2010
Journal
Publisher: EDP SCIENCES S A
Book Volume: 509
DOI: 10.1051/0004-6361/200913583
Abstract
We measure the neutral absorption towards the black hole X-ray binary system LMC X-1 from six archival soft X-ray spectra obtained with the gratings and/or CCD detectors on Chandra, XMM-Newton, and Swift. Four spectral models for the soft continuum are investigated. While the power law model may overestimate N-H considerably, the others give consistent results. Taking the lower metalicity of the Large Magellanic Cloud into account, we find equivalent hydrogen column densities of N-H = (1.0-1.3) x 10(22) cm(-2), with a systematic dependence on the orbital phase. This variation in the neutral absorption can nearly explain the orbital modulation of the soft X-ray flux recently detected with the All Sky Monitor (ASM) on the Rossi X-ray Timing Explorer (RXTE).
Authors with CRIS profile
Manfred Hanke
Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut
Jörn Wilms
Professur für Astronomie und Astrophysik
Involved external institutions
United States (USA) (US)How to cite
APA:
Hanke, M., Wilms, J., Nowak, M.A., Barragan, L., & Schulz, N.S. (2010). The column density towards LMC X-1. Astronomy & Astrophysics, 509. https://dx.doi.org/10.1051/0004-6361/200913583
MLA:
Hanke, Manfred, et al. "The column density towards LMC X-1." Astronomy & Astrophysics 509 (2010).
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