Timing and X-ray spectral features of Swift J1626.6-5156
Abstract
In this paper, we extend the timing analysis by Baykal et al. of Swift J1626.6-5156 using RXTE-PCA observations between MJD 53724 and MJD 55113 together with a Chandra-ACIS observation on MJD 54897 with a 20-ks exposure. We also present the X-ray spectral analysis of these RXTE and Chandra observations. We find that the spin-up rate of the source is correlated with the X-ray flux. Using this correlation, we estimate the distance and surface magnetic field of the source as ∼15 kpc and ∼9 × 1011 G, respectively. From the spectral analysis, we find that the power-law index increases and hydrogen column density decreases with a decreasing flux.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- August 2011
- DOI:
- 10.1111/j.1365-2966.2011.18796.x
- arXiv:
- arXiv:1101.5168
- Bibcode:
- 2011MNRAS.415.1523I
- Keywords:
-
- accretion;
- accretion discs;
- stars: neutron;
- pulsars: individual: Swift J1626.6-5156;
- X-rays: binaries;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- Revised version