Discoveries of 3 K-shell Lines of Iron and a Coherent Pulsation of 593-sec from SAX J1748.2-2808

Abstract

SAX J1748.2$-$2808 is a unique X-ray object with a flat spectrum and strong emission lines at 6.4--7.0 keV. The Suzaku satellite resolved the emission lines into 3 K-shell lines from neutral and highly ionized irons. A clear coherent pulsation with a period of 593-sec was found from the Suzaku and XMM-Newton archives. These facts favor that SAX J1748.2$-$2808 isan intermediate polar, a subclass of magnetized white dwarf binary (cataclysmic variable: CV). This paper reports on details of the findings and discusses the origin of this source.

7 pages, 8 figures, Submitted to PASJ on 2008, May 19, Accepted on 2008, June 22

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• Reproducibility of Non-X-ray Background for the X-ray Imaging Spectrometer aboard Suzaku
• Iron and Nickel Line Diagnostics for the Galactic Center Diffuse Emission
• New CTI Correction Method for the Spaced-Row Charge Injection of the Suzaku X-Ray Imaging Spectrometer
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Cited by in corpus (6)

• White dwarf masses in intermediate polars observed with the Suzaku satellite
• An X-Ray Face-on View of the Sgr B Molecular Clouds Observed with Suzaku
• The Galactic plane at faint X-ray fluxes - II. Stacked X-ray spectra of a sample of serendipitous XMM-Newton sources
• No X-Ray Excess from the HESS J1741-302 Region except a New Intermediate Polar Candidate
• Periodicity from X-ray sources within the inner Galactic disk
• Timing analysis of a sample of five cataclysmic variable candidates observed by the XMM-Newton satellite