Jets of SS433 on scales of dozens parsecs

Abstract

The radio nebula W50 harbours the relativistic binary system SS433, which is a source of the powerful wind and jets. The origin of W50 is wrapped in the interplay of the wind, supernova remnant and jets. The evolution of the jets on the scales of the nebula is a Rosetta stone for its origin. To disentangle the roles of these components, we study physical conditions of the jets propagation inside W50, and determine deceleration of the jets. The morphology and parameters of the interior of W50 are analyzed using the available observations of the eastern X-ray lobe, which traces the jet. In order to estimate deceleration of this jet, we devised a simplistic model of the viscous interaction, via turbulence, of a jet with the ambient medium, which would fit mass entrainment from the ambient medium into the jets of the radio galaxy 3C31, the well studied case of continuously decelerating jets. X-ray observations suggest that the eastern jet persists through W50 as hollow one, and is recollimated to the opening $\sim 30^{\circ }$. From the thermal emission of the eastern X-ray lobe, we determine a pressure of $P\sim 3\cdot 10^{-11}$ erg/cm${}^3$ inside W50. In the frame of a theory of the dynamics of radiative supernova remnants and stellar wind bubbles, this pressure in combination with other known parameters restricts W50's origin to a supernova happened $\sim 100000$ yr ago. Also, this pressure in our entrainment model gives a deceleration of the jet by $\sim 60\%$ in the bounds of W50's spherical component, of radius $\sim 40$ pc. In this case, the age of the jet should be $\ll 27000$ yr so as to satisfy the sphericity of W50. The entrainment model comes to the viscous stress in a jet of a form $\sigma =\alpha P$, where the viscosity parameter $\alpha$ is predefined by the model.

14 pages, 4 figures

References in corpus (4)

• Momentum Injection by Supernovae in the Interstellar Medium
• The Distance to SS433/W50 and its Interaction with the ISM
• Detection of persistent gamma-ray emission toward SS433/W50
• Deep optical observations of the interaction of the SS 433 microquasar jet with the W 50 radio continuum shell

Cited by in corpus (15)

• Multiband counterparts of two eclipsing ultraluminous X-ray sources in M 51
• Deciphering the Origin of the GeV--TeV Gamma-ray Emission from SS 433
• Gamma-ray heartbeat powered by the microquasar SS 433
• Multi-wavelength Emission from Galactic Jets: the Case of the Microquasar SS433
• Supernovae Producing Unbound Binaries and Triples
• Continuous Jets and Backflow Models for the Formation of W50/SS433 in Magnetohydrodynamics Simulations
• Spatially resolved study of the SS 433/W50 west region with Chandra: X-ray structure and spectral variation of non-thermal emission
• Energy estimation of high energy particles associated with the SS433/W50 system through radio observation at 1.4 GHz
• Quantifying jet-interstellar medium interactions in Cyg X-1: Insights from dual-frequency bow shock detection with MeerKAT
• Physical properties of the molecular cloud, N4, in SS433; Evidence for an interaction of molecular cloud with the jet from SS433
• X-ray panorama of the SS433/W50 complex by SRG/eROSITA
• On the Formation of SS433
• PeV particle acceleration and non-thermal emission in the `minimalist' model of the extended jets in W50/SS433
• Constraints on the collimated X-ray emission of SS 433 from the reflection on molecular clouds
• Near-Ultraviolet Radiation toward Molecular Cloud N4 in W 50/SS 433: Evidence for Direct Interaction of the Jet with Molecular Cloud