ar X iv : a st ro - p h / 01 05 32 9 v 1 1 8 M ay 2 00 1 RXTE Observations of GRS 1915 + 105
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چکیده
We analyse a set of three RXTE Target of Opportunity observations of the Galactic microquasar GRS 1915+105, observed in April 2000. We concentrate on the timing properties of the source, and examine the properties of a low frequency QPO, with its harmonic, in several energy ranges. The source was found in two different states of the spectro/temporal classification of Belloni et al. (2000), and exhibited in the three observations a strong, low frequency QPO together with a strong harmonic. We discuss the properties of the QPO, of its harmonic and of their spectral
منابع مشابه
ar X iv : a st ro - p h / 03 05 10 6 v 1 7 M ay 2 00 3 The 590 days long term periodicity of the microquasar GRS 1915 + 105
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متن کاملar X iv : a st ro - p h / 04 05 34 9 v 1 1 8 M ay 2 00 4 1 GRS 1915 + 105 : THE FIRST THREE MONTHS WITH INTEGRAL
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متن کاملar X iv : a st ro - p h / 01 05 33 8 v 1 1 8 M ay 2 00 1 Discovery of a Second High Frequency
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متن کاملar X iv : a st ro - p h / 02 08 10 9 v 1 6 A ug 2 00 2 State transition between high - soft and low - soft states observed in GRS 1915 + 105
We present the results of a detailed analysis of RXTE observations which show an unusual state transition between high-soft and low-soft states in the microquasar GRS 1915+105. The RXTE pointed observations reveal that these events appeared as a series of quasi-regular dips when hard X-ray and radio flux were very low. The X-ray light curve and colour-colour diagram of the source during these o...
متن کاملar X iv : a st ro - p h / 97 06 24 4 v 1 2 4 Ju n 19 97 GRS 1915 + 105 : Flares , QPOs and other events at 15 GHz
Monitoring with the Ryle Telescope at 15 GHz of the Galactic X-ray transient source GRS 1915+105 has revealed a remarkable range of rapid and extended flares which appear to be related to the X-ray emission as recorded by the RXTE all-sky monitor. Quasi-periodic oscillations in the range 20 – 40 min have been found and are probably related to oscillations in the soft X-ray flux.
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تاریخ انتشار 2001