SIMBAD references

2009ApJ...701.1627H - Astrophys. J., 701, 1627-1635 (2009/August-3)

Two rapidly variable galactic X-ray transients observed with Chandra, XMM-Newton, and Suzaku.

HEINKE C.O., TOMSICK J.A., YUSEF-ZADEH F. and GRINDLAY J.E.

Abstract (from CDS):

We have identified two moderately bright, rapidly variable transients in new and archival X-ray data near the Galactic center. Both objects show strong, flaring variability on timescales of tens to thousands of seconds, evidence of NHvariability, and hard spectra. XMMU J174445.5-295044 is seen at 2-10 keV fluxes of 3x10–11 to <10–12 erg/cm2/s, with NH at or above 5x1022/cm2, by XMM-Newton, Chandra, and Suzaku. A likely Two Micron All Sky Survey (2MASS) counterpart with KS= 10.2 shows colors indicative of a late-type star. CXOU J174042.0-280724 is a likely counterpart to the fast hard transient IGR J17407-2808. Chandra observations find FX(2-10 keV) ∼10–12 erg/cm2/s, with large NHvariations (from 2x1022 to >2x1023/cm2). No 2MASS counterpart is visible, to KS>13. XMMU J174445.5-295044 seems likely to be a new symbiotic star or symbiotic X-ray binary, while CXOU J174042.0-280724 is more mysterious, likely an unusual low-mass X-ray binary.

Abstract Copyright:

Journal keyword(s): stars: neutron - X-rays: binaries

Simbad objects: 13

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2021.10.24-00:15:31

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