Probing the history of SS433's jet kinematics via Decade-resolution radio observations of W50

Abstract

We present the results of a kinematical study of the W50 nebula using high resolution radio observations from the Very Large Array (VLA) spanning a 12-year period, sampled in 1984, 1993 and 1996. We conduct a careful analysis of the proper motions of the radio filaments across the W50 nebula at each epoch, and detect no significant motion for them during this period. The apparent lack of movement in the radio filaments mandates either (i) a high degree of deceleration of SS433's jet ejecta in the W50 nebula, or (ii) that the lobes of W50 formed a long time ago in SS433's history, during a jet outburst with appreciably different characteristics to the well-known precessing jet state observed in SS433 at the present day. We discuss the possible scenarios which could explain this result, with relevance to the nature of SS433's current jet activity.

11 pages, 6 figures, accepted to MNRAS

References in corpus (3)

• The Distance to SS433/W50 and its Interaction with the ISM
• Fluctuations and symmetry in the speed and direction of the jets of SS433 on different timescales
• Deep optical observations of the interaction of the SS 433 microquasar jet with the W 50 radio continuum shell

Cited by in corpus (18)

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• The Large-scale ISM of SS433/W50 Revisited
• Gamma-ray heartbeat powered by the microquasar SS 433
• LOFAR 150-MHz observations of SS 433 and W 50
• Multi-wavelength Emission from Galactic Jets: the Case of the Microquasar SS433
• Jets of SS433 on scales of dozens parsecs
• Continuous Jets and Backflow Models for the Formation of W50/SS433 in Magnetohydrodynamics Simulations
• FERMI observation of the jets of the microquasar SS433
• Magnetic Field Analysis of the Bow and Terminal Shock of the SS433 Jet
• Tentative evidence of spatially extended GeV emission from SS433/W50
• Spatially resolved study of the SS 433/W50 west region with Chandra: X-ray structure and spectral variation of non-thermal emission
• W 50 and SS 433
• Energy estimation of high energy particles associated with the SS433/W50 system through radio observation at 1.4 GHz
• X-ray panorama of the SS433/W50 complex by SRG/eROSITA
• Mass flows and their behaviors in the SS433--W50 system
• Investigation of the Microquasar SS 433 with VERITAS