HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.

SIS Spectrum of Vela X-1

Image Credit: Nagase et al 1994, ApJLett 436, L1.

The Fe K line in this SIS spectrum of Vela X-1 is composed of at least two, and maybe three components. The spectrum is line-dominated in eclipse.

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