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

Details Discoveries of 3 K-Shell Lines of Iron and a Coherent Pulsation of 593s from SAX J1748.2-2808 Discoveries of 3 K-Shell Lines of Iron and a Coherent Pulsation of 593s from SAX J1748.2-2808

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009pasj...61s..93n&link_type=abstract

Publicatio/s of the Astronomical Society of Japan, Vol.61, No.SP1, pp.S93--S98

Astronomy and Astrophysics

Astronomy

3

Galaxy: Center, Stars: Cataclysmic Variables, Stars: Individual (Sax J1748.2-2808)

Scientific paper

SAX J1748.2-2808 is a unique X-ray object with a flat spectrum and strong emission lines at 6.4--7.0keV. 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 593s was found from the Suzaku and XMM-Newton archives. These facts favor that SAX J1748.2-2808 is an intermediate polar, a subclass of a magnetized white dwarf binary (cataclysmic variable). This paper reports on details of the findings, and discusses the origin of this source.

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