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相关论文: GRS 1915+105 : High-energy Insights with SPI/INTEG…

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In this study, we undertake a spectral-timing analysis of the black hole X-ray binary source GRS 1915+105 using simultaneous observations carried out by AstroSat (LAXPC and SXT) and NICER in 2017. The source showed two flux levels (high and…

高能天体物理现象 · 物理学 2024-08-07 Ruchika Dhaka , Ranjeev Misra , JS Yadav , Pankaj Jain

(Abridged) We report the results of monitoring observations of the Galactic microquasar GRS 1915+105 performed simultaneously with INTEGRAL and RXTE Ryle . We present the results of the whole \integral campaign, report the sources that are…

We have analyzed Rossi X-ray Timing Explorer spectral data of the Galactic micro-quasar GRS 1915+105 in its various spectral states, as defined by Belloni et al. (2000). In states A and B the spectra are dominated by a strong soft thermal…

天体物理学 · 物理学 2009-11-07 M. Sobolewska , P. T. Zycki

The results of X-ray observations of Galactic superluminal jet source GRS 1915+105 during its low luminosity state and state transitions in October, 1996 - April, 1997 with PCA and HEXTE instruments aboard Rossi X-ray Timing Explorer (RXTE)…

天体物理学 · 物理学 2007-05-23 S. Trudolyubov , E. Churazov , M. Gilfanov

To date, mid-infrared properties of Galactic black hole binaries have barely been investigated in the framework of multi-wavelength campaigns. Yet, studies in this spectral domain are crucial to get complementary information on the presence…

高能天体物理现象 · 物理学 2015-05-18 F. Rahoui , S. Chaty , J. Rodriguez , Y. Fuchs , I. F. Mirabel , G. G. Pooley

We have compared simultaneous Ryle Telescope radio and Rossi X-Ray Timing Explorer X-ray observations of the galactic microquasar GRS 1915+105, using the classification of the X-ray behaviour in terms of three states as previously…

天体物理学 · 物理学 2009-11-07 M. Klein-Wolt , R. P. Fender , G. G. Pooley , T. Belloni , S. Migliari , E. H. Morgan , M. van der Klis

From data obtained from the PCA in the 2-11 keV and 11-30.5 keV energy range, GRS 1915+105 is seen during RXTE observations between 1996 May and October on two separate branches in a hardness intensity diagram. On the hard branch, GRS…

天体物理学 · 物理学 2009-10-28 Xingming Chen , Jean H. Swank , Ronald E. Taam

Multiple near-infrared wavelengths observations, carried out since 1993 on the galactic superluminal source of relativistic ejections GRS 1915+105, have yielded three important results. 1) The infrared counterpart of GRS 1915+105 exhibits…

天体物理学 · 物理学 2007-05-23 S. Chaty , I. F. Mirabel , L. F. Rodriguez , P. -A. Duc , M. Sauvage , A. J. Castro-Tirado , P. Callanan

GRS 1915+105 is a very well studied microquasar with a wide variety of temporal and spectral states. Multi-wavelength observations from radio to X-rays have uncovered clear relations between the variability in different bands. GRS 1915+105…

高能天体物理现象 · 物理学 2019-08-14 A. Szostek , G. Dubus , F. Brun , M. de Naurois

We present the results from a multiwavelength campaign of GRS 1915+105 performed from 2000 April 16 to 25. This is one of the largest coordinated set of observations ever performed for this source, covering the wide energy band in radio…

GRS 1915$+$105 is a stellar-mass black hole that is well known for exhibiting at least 12 distinct classes of X-ray variability and correlated multi-wavelength behavior. Despite such extraordinary variability, GRS 1915$+$105 remained one of…

高能天体物理现象 · 物理学 2021-03-10 Mayura Balakrishnan , J. M. Miller , M. T. Reynolds , E. Kammoun , A. Zoghbi , B. E. Tetarenko

GRS 1915+105 was observed by the CGRO/OSSE 9 times in 1995-2000, and 8 of those observations were simultaneous with those by RXTE. We present an analysis of all of the OSSE data and of two RXTE-OSSE spectra with the lowest and highest X-ray…

天体物理学 · 物理学 2009-11-06 Andrzej A. Zdziarski , J. Eric Grove , Juri Poutanen , A. R. Rao , S. V. Vadawale

BeppoSAX observed GRS 1915+105 on October 2000 with a long pointing lasting about ten days. During this observation, the source was mainly in the rho class characterized by bursts with a recurrence time of between 40 and 100 s. We identify…

太阳与恒星天体物理 · 物理学 2015-05-30 T. Mineo , E. Massaro , A. D'Ai , F. Massa , M. Feroci , G. Ventura , P. Casella , C. Ferrigno , T. Belloni

We report on long-term K band photometry of the galactic microquasar GRS 1915+105 since March 1999. We see variations of more than 1 mag, which are seemingly correlated with variations in X-ray intensity and spectral slope.

天体物理学 · 物理学 2007-05-23 J. Greiner , F. J. Vrba , A. A. Henden , H. H. Guetter , C. B. Luginbuhl

GRS 1915+105 is a black hole X-ray binary exhibiting quasi-periodic $\rho$-class ("heartbeat") oscillations with periods of $\sim$50-100 s, thought to arise from radiation-pressure-driven instabilities in the inner accretion disk at…

高能天体物理现象 · 物理学 2026-04-22 Karan Akbari , Chintan Patel , Sayantan Bhattacharya , Sudip Bhattacharyya , Manojendu Choudhury

We show that the galactic microquasar GRS 1915+105 exhibits quasi-periodic oscillations (QPOs) whose frequency varies continuously from 1-15 Hz, during spectrally hard dips when the source is in a flaring state. We report here analyses of…

天体物理学 · 物理学 2009-10-31 Craig B. Markwardt , Jean H. Swank , Ronald E. Taam

We report simultaneous millimetre and infrared observations of a sequence of very large amplitude quasi-periodic oscillations from the black hole X-ray binary GRS 1915+105. These oscillations are near the end of a sequence of over 700…

天体物理学 · 物理学 2009-10-31 R. P. Fender , G. G. Pooley

We have analyzed the X-ray spectra of the microquasar GRS 1915+105, as observed with the PCA on the Rossi XTE, during periods of stable weak emission, outbursts and rapid flaring. We find that the complicated X-ray intensity curve of this…

天体物理学 · 物理学 2009-10-30 T. Belloni , M. Mendez , A. R. King , M. van der Klis , J. van Paradijs

(abridged) This is the second paper presenting the results of two years of monitoring of GRS 1915+105 with \integral and \rxte and the Ryle Telescope. We present the X-ray spectral and temporal analysis of four observations which showed…

We present the analysis of the high energy emission of the Galactic black hole GRO J1655-40 at the beginning of its 2005 outburst. The data from 458 ks of INTEGRAL observations, spread over 4 weeks, are analyzed, along with the existing…

天体物理学 · 物理学 2009-11-13 A. Joinet , E. Kalemci , F. Senziani
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