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相关论文: INTEGRAL observations of SS433: Results of coordin…

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Results of simultaneous {\it INTEGRAL} and optical observations of galactic microquasar SS433 in May 2003 are presented. The analysis of the X-ray and optical eclipse duration and hard X-ray spectra obtained by {\it INTEGRAL} together with…

Observations of SS433 by INTEGRAL carried out in March -- May 2003 are presented. SS433 is evidently detected on the INTEGRAL images of the corresponding sky region in the energy bands 25-50 and 50-100 keV. The precessional variability of…

天体物理学 · 物理学 2009-11-10 A. M. Cherepashchuk , R. A. Sunyaev , E. V. Seifina , I. E. Panchenko , S. V. Molkov , K. A. Postnov

The analysis of hard X-ray INTEGRAL observations (2003-2008) of superaccreting galactic microquasar SS433 at precessional phases of the source with the maximum disk opening angle is carried out. It is found that the shape and width of the…

高能天体物理现象 · 物理学 2009-04-23 A. M. Cherepashchuk , R. A. Sunyaev , K. A. Postnov , E. A. Antokhina , S. V. Molkov

The analysis of INTEGRAL observations (2003-2008) of superaccreting galactic microquasar SS433 at precessional phases with the maximum disk opening angle is carried out. The shape and width of the primary X-ray eclipse is found to be…

天体物理学 · 物理学 2015-05-13 A. Cherepashchuk , K. Postnov , E. Antokhina , S. Molkov

INTEGRAL IBIS/ISGRI 18-60 keV observations of SS433 performed in 2003-2011 enabled the hard X-ray phase-resolved orbital and precessional light curves and spectra to be constructed. The spectra can be fitted by a power-law with photon index…

高能天体物理现象 · 物理学 2020-08-17 Anatol Cherepashchuk , Konstantin Postnov , Sergey Molkov , Eleonora Antokhina , Alexander Belinski

A huge optical luminosity of the supercritical accretion disc and powerful stellar wind in the high-mass X-ray binary SS433 make it difficult to reliably estimate the mass ratio of the binary components from spectroscopic observations. We…

高能天体物理现象 · 物理学 2018-07-20 Anatol Cherepashchuk , Kosnatntin Postnov , Alexandre Belinski

Based on multiyear INTEGRAL observations of SS433 in 2003-2011, a composite IBIS/ISGRI 18-60 keV orbital light curve is constructed around zero precessional phases psi_{pr}= 0 at the maximim accretion disk opening angle. It shows a peculiar…

高能天体物理现象 · 物理学 2013-10-24 A. M. Cherepashchuk , R. A. Sunyaev , S. V. Molkov , E. A. Antokhina , K. A. Postnov , A. I. Bogomazov

Based on multiyear INTEGRAL observations of SS433, a composite IBIS/ISGRI 18-60 keV orbital light curve is constructed around zero precessional phase $\psi_{pr}= 0$. It shows a peculiar shape characterized by a significant excess near the…

高能天体物理现象 · 物理学 2012-12-17 A. Cherepashchuk , R. Sunyaev , S. Molkov , E. Antokhina , K. Postnov , A. Bogomazov

Hard X-ray INT observations of SS 433 carried out during 2003-2005 years with an analysis of precessional and orbital variability is presented. The width of X-ray eclipse in the 25-50 keV range at the precessional phase $\psi=0.1$…

AX J1845.0-0433 is a transient high-mass X-ray binary discovered by ASCA. The source displays bright and short flares observed recently with INTEGRAL. The transient behaviour and the bright and short flares are studied in order to…

天体物理学 · 物理学 2009-11-13 J. A. Zurita Heras , R. Walter

IGR J16195-4945 is a hard X-ray source discovered by INTEGRAL during the Core Program observations performed in 2003. We analyzed the X-ray emission of this source exploiting the Swift-BAT survey data from December 2004 to March 2015, and…

高能天体物理现象 · 物理学 2016-02-03 G. Cusumano , V. La Parola , A. Segreto , A. D'Aì

Context: AXJ1845.0-0433 was discovered by ASCA in 1993 during fast outburst activity characterized by several flares on short timescales. Up to now, the source was not detected again by any X-ray mission. Its optical counterpart is…

We present our analysis of the extensive monitoring of SS433 by the RXTE observatory collected over the period 1996-2005. The difference between energy spectra taken at different precessional and orbital phases shows the presence of strong…

天体物理学 · 物理学 2008-11-26 E. Filippova , M. Revnivtsev , S. Fabrika , K. Postnov , E. Seifina

In Spring 2005, the blazar 3C454.3 underwent a dramatic outburst at all wavelengths from mm to X-rays. This prompted INTEGRAL observations, accomplished in 15-18 May 2005. The source was detected by the INTEGRAL instruments from 3 to 200…

天体物理学 · 物理学 2009-11-11 Elena Pian , Luigi Foschini , Volker Beckmann

We present analysis of extensive monitoring of SS433 by the RXTE observatory collected over the period 1996-2005. The difference between energy spectra taken at different precessional and orbital phases shows the presence of a strong…

天体物理学 · 物理学 2007-05-23 E. Filippova , M. Revnivtsev , S. Fabrika , K. Postnov , E. Seifina

We have performed observations of the blazar S5 0716+714 with INTEGRAL on 2-6 April 2004. In the first months of 2004, the source had increased steadily in optical brightness and had undergone two outbursts. During the latter, occurred in…

天体物理学 · 物理学 2009-11-10 E. Pian , L. Foschini , V. Beckmann

We present results from a short series of blue, moderate resolution spectra of the microquasar binary, SS 433. The observations were made at a time optimized to find the spectrum of the donor star, i.e., when the donor was in the foreground…

天体物理学 · 物理学 2009-11-07 D. R. Gies , W. Huang , M. V. McSwain

The microquasar SS 433 is an interacting massive binary consisting of an evolved mass donor and a compact companion that ejects relativistic jets. The mass donor was previously identified through spectroscopic observations of absorption…

天体物理学 · 物理学 2009-11-13 Todd C. Hillwig , Douglas R. Gies

The X-ray burster 4U1850-087, located in the Galactic globular cluster NGC6712, is an ultracompact binary (orbital period~21 min),likely harbouring a degenerate companion.The source has been observed at soft gamma-rays several times with…

天体物理学 · 物理学 2009-11-11 L. Sidoli , A. Paizis , A. Bazzano , S. Mereghetti

The Galactic microquasar SS\,433 is very luminous and launches oppositely-directed jets of cool hydrogen at a quarter of the speed of light. Observations of emission lines from the circumbinary disk imply a system mass exceeding 40 $…

星系天体物理 · 物理学 2010-09-14 M. G. Bowler
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