Timing and X-ray spectral features of Swift J1626.6-5156

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Icdem B., İNAM S. Ç., BAYKAL A.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, cilt.415, sa.2, ss.1523-1526, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 415 Sayı: 2
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1111/j.1365-2966.2011.18796.x
  • Dergi Adı: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1523-1526
  • Anahtar Kelimeler: accretion, accretion discs, stars: neutron, pulsars: individual: Swift J1626.6-5156, X-rays: binaries, MAGNETIZED NEUTRON-STARS, PULSAR ATMOSPHERES, ACCRETING PULSARS, TORQUE, MODELS, PERIOD
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

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 similar to 15 kpc and similar to 9 x 10(11) G, respectively. From the spectral analysis, we find that the power-law index increases and hydrogen column density decreases with a decreasing flux.