Reflection component in the Bright Atoll Source GX 9+9
نویسندگان
چکیده
منابع مشابه
A pr 1 99 8 Discovery of kilohertz quasi - periodic oscillations in the Z source GX 340 + 0
We have discovered two simultaneous kHz quasi-periodic oscillations (QPOs) in the Z source GX340+0 with the Rossi X-ray Timing Explorer. The X-ray hardness-intensity and color-color diagram each show a full Z-track, with an extra limb branching off the flaring branch of the Z. Both peaks moved to higher frequencies when the mass accretion rate increased. The two peaks moved from 247± 6 and 567±...
متن کاملthe study of bright and surface discrete cavity solitons dynamics in saturable nonlinear media
امروزه سالیتون ها بعنوان امواج جایگزیده ای که تحت شرایط خاص بدون تغییر شکل در محیط منتشر می-شوند، زمینه مطالعات گسترده ای در حوزه اپتیک غیرخطی هستند. در این راستا توجه به پدیده پراش گسسته، که بعنوان عامل پهن شدگی باریکه نوری در آرایه ای از موجبرهای جفت شده، ظاهر می گردد، ضروری است، زیرا سالیتون های گسسته از خنثی شدن پراش گسسته در این سیستم ها بوسیله عوامل غیرخطی بوجود می آیند. گسستگی سیستم عامل...
ar X iv : a st ro - p h / 98 03 26 7 v 1 2 3 M ar 1 99 8 Discovery of a 57 - 69 Hz quasi - periodic oscillation in GX 13 + 1
We report the discovery of a quasi-periodic oscillation (QPO) at 61.0±1.7 Hz with the Rossi X-Ray Timing Explorer in the low-mass X-ray binary and persistently bright atoll source GX 13+1 (4U 1811–17). The QPO had an rms amplitude of 1.7±0.2% (2–13.0 keV) and a FWHM of 15.9±4.2 Hz. Its frequency increased with count rate and its amplitude increased with photon energy. In addition a peaked noise...
متن کاملReflection and noise in the low spectral state of GX 339 - 4 .
We analyzed RXTE/PCA observations of GX339-4 in the low spectral state from 1996–1997. We found tight correlations between the QPO frequency and the spectral parameters of GX 339-4 X-ray emission. With the increase of the QPO frequency the slope of the primary power law and the amplitude of the reflected component increase. Frequency resolved spectral analysis showed, that the variability of th...
متن کاملGX 349+2 (Sco X-2): an odd-ball among the Z sources
We report on about 4 hrs of observations made with the Rossi X-ray Timing Explorer on 1997 May 2 of the lowmass X-ray binary and Z source GX 349+2 (Sco X-2). Initially the source was in the normal branch (NB), later it moved to the flaring branch (FB). In the NB the power spectra reveal a broad (FWHM∼16 Hz) noise component peaking near 9 Hz, with a fractional rms amplitude of ∼3% (2–30 keV). Th...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2020
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/202037491