The accretion environment in Vela X-1 during a flaring period using XMM-Newton

  title={The accretion environment in Vela X-1 during a flaring period using XMM-Newton},
  author={Silvia Mart'inez-N'unez and Jos'e Miguel Torrej'on and Matthias Bissinger n'e Kuhnel and Peter Kretschmar and Martin Stuhlinger and Jos'e Joaqu'in Rodes-Roca and F. Furst and Ingo Kreykenbohm and Antonio Martin-Carrillo and Andrew M. T. Pollock and Joern Wilms},
  journal={Astronomy and Astrophysics},
We present analysis of 100 ks contiguous XMM-Newton data of the prototypical wind accretor Vela X-1. The observation covered eclipse egress between orbital phases 0.134 and 0.265, during which a giant flare took place, enabling us to study the spectral properties both outside and during the flare. This giant flare with a peak luminosity of 3.92 +0.42 −0.09 × 10 37 erg s −1 allows estimates of the physical parameters of the accreted structure with a mass of ∼10 21 g. We have been able to model… 

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