THE QUIESCENT COUNTERPART OF THE PECULIAR X-RAY BURSTER SAX J2224.9+5421
نویسندگان
چکیده
منابع مشابه
Discovery of the X-ray Burster Sax J1752.3–3138
During a 50 ks monitoring observation of the Galactic bulge performed in September 1999 by the Wide Field Cameras on board the BeppoSAX satellite, an X-ray burst was detected from a sky position ∼ 3 • off the Galactic centre. No previously known X-ray sources are located within the position error circle of the observed burst. The new burster, SAX J1752.3−3138, did not show any persistent emissi...
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We present JK ′ infrared images of the X-ray transient KS 1731–260, obtained in 1997 and in 1998 with IRAC2b at the ESO/MPI 2.2-m telescope at La Silla. Using as a reference the recent Chandra position, we confirm the identification of the X-ray source with the previously proposed counterpart (Wijnands et al. 2001b), for which we measure J = 17.32 ± 0.2 and K ′ = 16.36 ± 0.18. The source was en...
متن کاملTwo spectral states of the transient X - ray burster SAX J 1747 . 0 - 2853
The neutron star binary SAX J1747.0-2853, located in the Galactic Center region at about 0.5 deg from Sgr A* and at a distance of ∼ 9 kpc, has been observed in outburst four times (1998, 1999, 2000 and 2001) by BeppoSAX and RossiXTE. At the time of its discovery in 1998 the source was observed in a low/hard state, showing a hard tail with a high energy cutoff of ∼ 70 keV. About two years later ...
متن کاملThe optical counterpart of SAX J1808.4–3658, the transient bursting millisecond X-ray pulsar
A set of CCD images have been obtained during the decline of the X-ray transient SAX J1808.4–3658 during April–June 1998. The optical counterpart has been confirmed by several pieces of evidence. The optical flux shows a modulation on several nights which is consistent with the established X-ray binary orbit period of 2 hours. This optical variability is roughly in antiphase with the weak X-ray...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2014
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/787/1/67