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Related papers: SS433: Observation of the circumbinary disc and ex…

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Some stationary lines in the emission spectra of SS 433 are eclipsed, but most are not. Lines attributed to a circumbinary disk are not eclipsed, but double in relative intensity during primary eclipse. A C II doublet is eclipsed and…

Solar and Stellar Astrophysics · Physics 2015-10-14 M. G. Bowler

We present spectroscopy of the microquasar SS 433 obtained near primary eclipse and disk precessional phase Psi = 0.0, when the accretion disk is expected to be most ``face-on''. The likelihood of observing the spectrum of the mass donor is…

Astrophysics · Physics 2009-11-10 T. C. Hillwig , D. R. Gies , W. Huang , M. V. McSwain , M. A. Stark , A. van der Meer , L. Kaper

We present an analysis of the X-ray spectral properties observed from black hole candidate (BHC) binary SS~433. We have analyzed RXTE data from this source, coordinated with Green Bank Interferometer/RATAN-600. We show that SS~433 undergoes…

Astrophysics of Galaxies · Physics 2015-05-19 Elena Seifina , Lev Titarchuk

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…

Astrophysics · Physics 2009-11-07 D. R. Gies , W. Huang , M. V. McSwain

The unique microquasar SS433 is a massive X-ray binary system at an advanced evolutionary stage. The optical star overflows its Roche lobe and transfers mass at a very high rate onto a black hole surrounded by a supercritical accretion disk…

High Energy Astrophysical Phenomena · Physics 2025-11-11 A. M. Cherepashchuk , A. V. Dodin , K. A. Postnov

We propose the scenario to interpret the overall observational features of the SS433--W50 system. The most unique features of SS433 are the presence of the precessing, mildly relativistic jets and the obscuration of the central engine,…

High Energy Astrophysical Phenomena · Physics 2022-06-30 Hajime Inoue

I discuss two points concerning recent Brackett series spectra of SS 433. The first is that outbursts to red and blue episodic in the Balmer series are now shown to be episodic in the far infrared Brackett series. The second point is that…

Solar and Stellar Astrophysics · Physics 2017-08-09 M. G. Bowler

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…

Astrophysics · Physics 2015-05-13 A. Cherepashchuk , K. Postnov , E. Antokhina , S. Molkov

SS433 is the only Galactic binary system known to persistently accrete at highly super-critical (or hyper-critical) rates, similar to those in tidal disruption events, and likely needed to explain the rapid growth of those very high…

Results of simultaneous INTEGRAL and optical observations of galactic microquasar SS433 in May 2003 and INTEGRAL/RXTE observations in March 2004 are presented. Persistent precessional variability with a maximum to minimum uneclipsed hard…

We analyze the optical spectrum of type 1 QSO SDSS J1425+3231. This ob- ject is interesting since its narrow emission lines such as [O III]{\lambda}{\lambda}4959, 5007 are double- peaked, and the line structure can be modeled well by three…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Zhixin Peng , Yanmei Chen , Qiusheng Gu , Chen Hu

The Galactic microquasar SS 433 is a member of a binary system but there is a lack of data on the orbital velocities of the components. The emission lines of the C II doublet at 7231 and 7236 Angstrom have been tracked nightly over two…

Solar and Stellar Astrophysics · Physics 2020-09-02 M. G. Bowler

We examine the jets and the disc of SS 433 at super-Eddington luminosities with 600 times Eddington critical accretion rate by time-dependent two-dimensional radiation hydrodynamical calculations, assuming alpha-model for the viscosity.…

High Energy Astrophysical Phenomena · Physics 2015-05-13 Toru Okuda , Galina V. Lipunova , Diego Molteni

Context. The Galactic microquasar SS 433 launches oppositely directed jets at speeds approximately a quarter of the speed of light. Both the speed and direction of the jets exhibit small fluctuations. A component of the speed variation has…

Astrophysics of Galaxies · Physics 2015-05-14 M. G. Bowler

We present multi-frequency VLBA+VLA observations of SS433 at 1.6, 5 and 15 GHz. These observations provide the highest angular resolution radio spectral index maps ever made for this object. Motion of the components of SS433 during the…

Astrophysics · Physics 2011-05-23 Z. Paragi , R. C. Vermeulen , I. Fejes , R. T. Schilizzi , R. E. Spencer , A. M. Stirling

Despite decades of observations across all wavebands and dedicated theoretical modelling, the SS 433 system still poses many questions, especially in the high-energy range. SS 433 is a high-mass X-ray binary at a distance of $\sim 5.5$ kpc,…

High Energy Astrophysical Phenomena · Physics 2017-08-17 Payel Kar , The VERITAS Collaboration

We present results of long-term photometric monitoring of SS433 which proves a secular evolutionary increase of the orbital period of SS433 at a rate of $(1.14\pm 0.25)\times 10^{-7}$ s~s$^{-1}$. Using a physical model of non-conservative…

High Energy Astrophysical Phenomena · Physics 2023-06-07 Anatol Cherepashchuk , Alexander Belinski , Alexander Dodin , Konstantin Postnov

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…

High Energy Astrophysical Phenomena · Physics 2013-10-24 A. M. Cherepashchuk , R. A. Sunyaev , S. V. Molkov , E. A. Antokhina , K. A. Postnov , A. I. Bogomazov

High signal-to-noise, representative spectra of star-forming galaxies at z~2, obtained via stacking, reveal a high-velocity component underneath the narrow H-alpha and [NII] emission lines. When modeled as a single Gaussian, this broad…

We present VLBI imaging results for SS433 from the period 1995-2000. An equatorial emission region is detected and confirmed in 7 experiments at 1.6 and 5 GHz. The structure of the region changes with time on scales of weeks to months. The…

Astrophysics · Physics 2007-05-23 Z. Paragi , I. Fejes , R. C. Vermeulen , R. T. Schilizzi , R. E. Spencer , A. M. Stirling