Discovery of an eccentric 30 day period in the supergiant X-ray binary SAX J1818.6–1703 with INTEGRAL

  title={Discovery of an eccentric 30 day period in the supergiant X-ray binary SAX J1818.6–1703 with INTEGRAL},
  author={Juan Antonio Zurita Heras and Sylvain Chaty},
  journal={Astronomy and Astrophysics},
Context. SAX J1818.6−1703 is a flaring transient X-ray source serendipitously discovered by BeppoSAX in 1998 during an observation of the Galactic centre. The source was identified as a high-mass X-ray binary with an OB supergiant companion (SGXB). Displaying short and bright flares and an unusually very low quiescent level implying an intensity dynamical range as large as 10 3−4 , the source was classified as a supergiant fast X-ray transient (SFXT). Aims. The mechanism triggering the… 

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