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相关论文: The multifrequency monitoring of microquasars. SS4…

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We discuss the results of the radio studies of the X-ray binaries with relativistic jets. We carried out a multi-frequency (1-30 GHz) daily monitoring of the radio flux variability of the microquasars SS433, GRS1915+105, and Cyg X-3 with…

天体物理学 · 物理学 2009-06-25 Sergei A. Trushkin , Nikolaj A. Nizhelskij , Nikolaj N. Bursov

We discuss the results of the monitoring programs of the X-ray binaries with relativistic jets studies. We carried out a multi-frequency (1-30 GHz) daily monitoring of the radio flux variability of the microquasars SS433, GRS1915+105, V4641…

天体物理学 · 物理学 2008-11-26 S. A. Trushkin , N. N. Bursov , N. A. Nizhelskij , E. K. Majorova , P. A. Voitsik

We discuss flaring variability of radio emission of microquasars, measured in monitoring programs with the RATAN-600 radio telescope. We carried out a multi-frequency (1-30 GHz) daily monitoring of the radio flux variability of the…

天体物理学 · 物理学 2009-11-13 Sergei A. Trushkin , Nikolaj N. Bursov , Nikolaj A. Nizhelskij

We present results of long-term daily monitoring of a sample of Galactic radio-emitting X-ray binaries showing relativistic jets (RJXRB): SS433, Cyg X-3, and GRS 1915+105, with the RATAN-600 radio telescope in the 0.6-22 GHz range. We…

天体物理学 · 物理学 2007-05-23 S. A. Trushkin , E. K. Majorova , N. N. Bursov

We present LOFAR high-band data over the frequency range 115-189 MHz for the X-ray binary SS 433, obtained in an observing campaign from 2013 February - 2014 May. Our results include a deep, wide-field map, allowing a detailed view of the…

We report about the multi-frequency (1-30 GHz) daily monitoring of the radio flux variability of the three microquasars: SS433, GRS1915+105 and Cyg X-3 during the period from September 2005 to May 2006. 1. We detected clear correlation of…

天体物理学 · 物理学 2007-05-23 S. A. Trushkin , N. N. Bursov , T. Kotani , N. A. Nizhelskij , M. Namiki , M. Tsuboi , P. A. Voitsik

We report the first detection at 4.7 and 8.2 GHz with the RATAN-600 radio telescope of the source PSO J047.4478+27.2992, which has been announced as a blazar at z=6.1. The average flux density is $12\pm3$ and $8\pm4$ mJy at 4.7 and 8.2 GHz…

高能天体物理现象 · 物理学 2020-12-15 T. Mufakharov , A. Mikhailov , Yu. Sotnikova , M. Mingaliev , V. Stolyarov , A. Erkenov , N. Nizhelskij , P. Tsybulev

We have been performing daily observations of bright microquasars at 1.2-20~GHz with the Northern sector of RATAN-600 radio telescope for more than ten years. During the 2019--2021 observations we recorded bright flares, which we call giant…

高能天体物理现象 · 物理学 2023-11-23 S. A. Trushkin , A. V. Shevchenko , N. N. Bursov , P. G. Tsybulev , N. A. Nizhel'skii , A. N. Borisov , A. A. Kudryashova

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…

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

Context. SS 433 is historically a well-known microquasar in the Galaxy that has been deeply studied during the four decades elapsed since its discovery. However, observations at very high radio frequencies with good angular resolution are…

We present multiwaveband observations of a well selected sample of 28 quasars and two radio galaxies with flat radio spectra and strong millimeter wave emission (referred to here as FSRQ's). The observations include multifrequency VLBI…

天体物理学 · 物理学 2009-10-31 S. D. Bloom , A. P. Marscher , E. M. Moore , W. K. Gear , H. Terasranta , E. Valtaoja , H. D. Aller , M. F. Aller

We briefly review the Galactic microquasar SS 433/W50 and present a new RXTE spectral and timing study. We show that the X-ray flux decreases during radio flares, a behavior seen in other microquasars. We also find short time-scale…

天体物理学 · 物理学 2007-05-23 Samar Safi-Harb , Taro Kotani

We present the radio properties of optically selected quasars with $z\geq3$. The complete sample consists of 102 quasars with a flux density level $S_{1.4}\geq100$ mJy in a declination range -35$^{\circ}$ $\leq$ Dec $\leq$ +49$^{\circ}$.…

We conducted a multi-wavelength campaign in September-October, 2002, to observe SS 433. We used 45 meter sized 30 dishes of Giant Meter Radio Telescope (GMRT) for radio observation, 1.2 meter Physical Research Laboratory Infra-red telescope…

A radio-IR-optical-X-ray observation campaign of SS 433 has been performed in April 2006, when the jet axis is almost perpendicular to the line of sight. Five flares have been detected during the campaign by radio monitoring observation…

The redshift distribution of flat-spectrum radio sources with 5 GHz flux densities S>5 mJy is a key component in using current radio lens surveys to probe the cosmological model. We have constructed the first flat-spectrum radio sample in…

天体物理学 · 物理学 2009-11-07 J. A. Munoz , E. E. Falco , C. S. Kochanek , J. Lehar , E. Mediavilla

The paper presents the results of multi-wave radio observations of sixteen red dwarfs with Earth-like planets in the habitable zones on RATAN-600. In the passage mode, radiometers of four frequency ranges of 22, 11, 4.7 and 2.3 GHz (1.38,…

太阳与恒星天体物理 · 物理学 2025-05-21 Grigory M. Beskin , Vladimir N. Chernenkov , Nikolai N. Bursov , Alexey A. Shlyapnikov , Alexander D. Panov

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

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…

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