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SS433 is an X-ray binary emitting persistent relativistic double sided jets that expand into the surrounding W50 radio nebula. The SS433/W50 system is then an excellent laboratory for studying relativistic jet interaction with the…

Astrophysics · Physics 2007-05-23 Yael Fuchs

SS433 is a jet emitting X-ray binary surrounded by the W50 radio nebula. The SS433/W50 system is an excellent laboratory for studying relativistic jet interaction with the surrounding interstellar medium. In this context, part of the W50…

Astrophysics · Physics 2007-05-23 Yael Fuchs

The W50/SS433 system is an unusual Galactic outflow-driven object of debatable origin. We have used the Australia Telescope Compact Array (ATCA) to observe a new 198 pointing mosaic, covering $3^\circ \times 2^\circ$, and present the…

Astrophysics of Galaxies · Physics 2017-03-14 J. S. Farnes , B. M. Gaensler , C. Purcell , X. H. Sun , M. Haverkorn , E. Lenc , S. P. O'Sullivan , T. Akahori

The radio nebula W50 is a unique object interacting with the jets of the microquasar SS433. The SS433/W50 system is a good target for investigating the energy of cosmic-ray particles accelerated by galactic jets. We report observations of…

High Energy Astrophysical Phenomena · Physics 2021-04-14 Haruka Sakemi , Rikuto Omae , Takumi Ohmura , Mami Machida

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…

Astrophysics · Physics 2007-05-23 Samar Safi-Harb , Taro Kotani

The X-ray binary SS 433, embedded in the W50 nebula (or supernova remnant W50), shows bipolar jets that are ejected with mildly relativistic velocities, and extend toward the east and west out to scales of tens of parsecs. Previous X-ray…

Diffuse X-ray emission of the radio nebula W50 along the line of the of jets of the microquasar SS433 has a non-thermal power law component. This could be the inverse-Compton scattered emission of the SS433 accretion disk funnel, which is…

Solar and Stellar Astrophysics · Physics 2013-06-20 A. A. Panferov , A. A. Kabanov

We present new spectral (FPI and long-slit) data on the Eastern optical filament of the well known radionebula W50 associated with SS433. We find that on sub-parsec scales different emission lines are emitted by different regions with…

High Energy Astrophysical Phenomena · Physics 2015-05-18 P. Abolmasov , O. Maryeva , A. N. Burenkov

W50 remains the only supernova remnant (SNR) confirmed to harbor a microquasar: the powerful enigmatic source SS 433. Our past study of this fascinating SNR revealed two X-ray lobes distorting the radio shell as well as non-thermal X-rays…

Astrophysics · Physics 2009-11-10 A. Moldowan , S. Safi-Harb , Y. Fuchs , G. Dubner

We present a broadband X-ray study of W50 (`the Manatee nebula'), the complex region powered by the microquasar SS 433, that provides a test-bed for several important astrophysical processes. The W50 nebula, a Galactic PeVatron candidate,…

W50 is a radio nebula around hyper-accreting Galactic microquasar SS~433. Here we focus on one peculiar feature of W50 - a pair of so-called "extended X-ray jets" (EXJs). These "jets" have a size of $\sim20\, {\rm pc}$, a sharp inner…

High Energy Astrophysical Phenomena · Physics 2024-04-16 E. M. Churazov , I. I. Khabibullin , A. M. Bykov

SS 433, located at the center of the W 50 radio nebula, is a binary system that ejects jets oriented east-west with precessional motion. X-ray lobes, containing compact "knots" labeled as head (e1), lenticular (e2), and ring (e3) in the…

High Energy Astrophysical Phenomena · Physics 2025-05-19 Kazuho Kayama , Takaaki Tanaka , Hiroyuki Uchida , Takeshi Go Tsuru , Yoshiyuki Inoue , Dmitry Khangulyan , Naomi Tsuji , Hiroaki Yamamoto

Four mosaics of deep, continuum-subtracted, CCD images have been obtained over the extensive galactic radio continuum shell, W 50, which surrounds the remarkable stellar system SS 433. Two of these mosaics in the Halpha+[N II] and [O III]…

The microquasar SS433 features the most energetic jets known in our Galaxy. A large fraction of the jet kinetic power is delivered to the surrounding W50 nebula at the jet termination shock, from which high-energy emission and cosmic-ray…

High Energy Astrophysical Phenomena · Physics 2015-06-30 Pol Bordas , Ruizhi Yang , Ervin Kafexhiu , Felix Aharonian

With new high-resolution CO and HI data, we revisited the large-scale interstellar medium (ISM) environment toward the SS 433/W50 system. We find that two interesting molecular cloud (MC) concentrations, G39.315-1.155 and G40.331-4.302, are…

Astrophysics of Galaxies · Physics 2019-01-08 Yang Su , Xin Zhou , Ji Yang , Yang Chen , Xuepeng Chen , Shaobo Zhang

The radio supernova remnant W50 hosts at its center the peculiar galactic X-ray binary SS 433. It shows a central spherical structure with two `ears' which are supposed to be formed by the interaction of the precessing jets of SS 433 with…

Astrophysics · Physics 2015-06-24 W. Brinkmann , G. W. Pratt , S. Rohr , N. Kawai , V. Burwitz

We investigate the production of gamma-rays in the inner regions of SS 433 and in its interaction between its jets and the W50 nebula. We estimate the VHE emission that can be generated within the jets at distances above 1e+13 cm from the…

High Energy Astrophysical Phenomena · Physics 2015-05-20 Pol Bordas , Valentí Bosch-Ramon , Josep Maria Paredes

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…

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…

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…

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