X-ray spectroscopy of MXB 1728-34 with XMM-Newton

Journal article

Publication Details

Author(s): Egron E, Di Salvo T, Burderi L, Papitto A, Barragan L, Dauser T, Wilms J, D'Ai A, Riggio A, Iaria R, Robba NR
Journal: Astronomy & Astrophysics
Publication year: 2011
Volume: 530
ISSN: 0004-6361


We analyzed an XMM-Newton observation of the low-mass X-ray binary and atoll source MXB 1728-34. The source was in a low-luminosity state during the XMM-Newton observation, corresponding to a bolometric X-ray luminosity of 5 x 10(36) d(5.1kpc)(2) erg s(-1). The 1-11 keV X-ray spectrum of the source, obtained combining data from all the five instruments on-board XMM-Newton, is well fitted by a Comptonized continuum. Evident residuals are present at 6-7 keV, which are ascribed to the presence of a broad iron emission line. This feature can be equally well fitted by a relativistically smeared line or by a self-consistent, relativistically smeared reflection model. Under the hypothesis that the iron line is produced by reflection from the inner accretion disk, we can infer important information on the physical parameters of the system, such as the inner disk radius, R-in = 25-100 km, and the inclination of the system, 44 degrees < i < 60 degrees.

FAU Authors / FAU Editors

Dauser, Thomas Dr.
Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut
Wilms, Jörn Prof. Dr.
Professur für Astronomie und Astrophysik

External institutions with authors

Università degli Studi di Cagliari
Università degli Studi di Palermo

How to cite

Egron, E., Di Salvo, T., Burderi, L., Papitto, A., Barragan, L., Dauser, T.,... Robba, N.R. (2011). X-ray spectroscopy of MXB 1728-34 with XMM-Newton. Astronomy & Astrophysics, 530. https://dx.doi.org/10.1051/0004-6361/201016093

Egron, Elise, et al. "X-ray spectroscopy of MXB 1728-34 with XMM-Newton." Astronomy & Astrophysics 530 (2011).


Last updated on 2019-17-06 at 11:08