The X-ray spectrum of the atoll source 4U 1608--52
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چکیده
منابع مشابه
The X - ray spectrum of the atoll source 4 U 1608 - 52
The transient atoll source 4U 1608–52 had been extensively observed by the Rossi X-ray Timing Explorer (RXTE ) during its 1998 outburst. We analyse its X-ray spectra as a function of inferred accretion rate from both the 1998 outburst and from the non-outburst 1996 and 1998 data. We can fit all the spectra by a model in which seed photons from the neutron star surface are Comptonized in a bound...
متن کاملKilohertz Quasi-Periodic Oscillation Peak Separation is not Constant in the Atoll Source 4U 1608–52
We present new Rossi X-ray Timing Explorer observations of the low-mass X-ray binary 4U 1608–52 during the decay of its 1998 outburst. We detect by a direct FFT method the existence of a second kilohertz quasi-periodic oscillation (kHz QPO) in its power density spectrum, previously only seen by means of the sensitivity-enhancing ‘shift and add’ technique. This result confirms that 4U 1608–52 is...
متن کاملThe X-ray spectrum of the bursting atoll source 4U 1728-34 observed with INTEGRAL
We present for the first time a study of the 3–200 keV broad band spectra of the bursting atoll source 4U 1728-34 (GX 354-0) along its hardness intensity diagram. The analysis was done using the INTEGRAL public and Galactic Center deep exposure data ranging from February 2003 to October 2004. The spectra are well described by a thermal Comptonization model with an electron temperature from 35 k...
متن کاملKilo-Hertz QPO and X-ray Bursts in 4U 1608-52 in Low Intensity State
We present the results from RXTE/PCA observations of 4U 1608-52 in its island state on March 15, 18 and 22 of 1996. Three type I X-ray bursts were detected in one RXTE orbit on March 22. We observed QPO features peaking at 567-800 Hz on March 15 and 22, with source fractional rms amplitude of 13%-17% and widths of 78-180 Hz in the power density spectra averaged over each spacecraft orbit. The r...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2002
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.2002.06009.x