Coupled radio and X-ray emission and evidence for discrete ejecta in the jets of SS 433

Abstract

We present five epochs of simultaneous radio (VLA) and X-ray (Chandra) observations of SS 433, to study the relation between the radio and X-ray emission in the arcsecond-scale jets of the source. We detected X-ray emission from the extended jets in only one of the five epochs of observation, indicating that the X-ray reheating mechanism is transient. The reheating does not correlate with the total flux in the core or in the extended radio jets. However, the radio emission in the X-ray reheating regions is enhanced when X-ray emission is present. Deep images of the jets in linear polarization show that outside of the core, the magnetic field in the jets is aligned parallel to the local velocity vector, strengthening the case for the jets to be composed of discrete bullets rather than being continuous flux tubes. We also observed anomalous regions of polarized emission well away from the kinematic trace, confirming the large-scale anisotropy of the magnetic field in the ambient medium surrounding the jets.

Accepted for publication in ApJ. 11 pages (emulateapj), 9 figures, 3 tables

References in corpus (3)

• Jet-dominated advective systems: radio and X-ray luminosity dependence on the accretion rate
• The Distance to SS433/W50 and its Interaction with the ISM
• Structure and Magnetic Fields in the Precessing Jet System SS 433 I. Multi-Frequency Imaging from 1998

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• X-ray panorama of the SS433/W50 complex by SRG/eROSITA
• Arcsecond-Scale X-ray Imaging and Spectroscopy of SS 433 with Chandra HETG
• Spectral and photometric variability of SS 433 observed with XRISM and simultaneous optical and near-infrared telescopes
• Optical/infrared polarised emission in X-ray binaries
• 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
• The NICER view of Scorpius X-1
• Simulation-calibrated Bayesian inference for progenitor properties of the microquasar SS 433