Magnetic Field Analysis of the Bow and Terminal Shock of the SS433 Jet

Abstract

We report a polarization analysis of the eastern region of W50, observed with the Australia Telescope Compact Array (ATCA) at 1.4 - 3.0 GHz. In order to study the physical structures in the region where the SS433 jet and W50 interact, we obtain an intrinsic magnetic field vector map of that region. We find that the orientation of the intrinsic magnetic field vectors are aligned along the total intensity structures, and that there are characteristic, separate structures related to the jet, the bow shock, and the terminal shock. The Faraday rotation measures (RMs), and the results of Faraday Tomography suggest that a high intensity, filamentary structure in the north-south direction of the eastern-edge region can be separated into at least two parts to the north and south. The results of Faraday Tomography also show that there are multiple components along the line of sight and/or within the beam area. In addition, we also analyze the X-ray ring-like structure observed with XMM-Newton. While the possibility still remains that this X-ray ring is real, it seems that the structure is not ring-like at radio wavelengths. Finally, we suggest that the structure is a part of the helical structure that coils the eastern ear of W50.

arXiv comment22 pages, 10 figures, accepted for publication in PASJ

References in corpus (15)

• Faraday Rotation Measure Synthesis
• The Australia Telescope Compact Array Broadband Backend (CABB)
• Complex Faraday depth structure of Active Galactic Nuclei as revealed by broadband radio polarimetry
• The Second Data Release of the INT Photometric H-Alpha Survey of the Northern Galactic Plane (IPHAS DR2)
• On the Radio Polarization Signature of Efficient and Inefficient Particle Acceleration in Supernova Remnant SN 1006
• Twenty Years of Timing SS433
• When Microquasar Jets and Supernova Collide: Hydrodynamically Simulating the SS433-W50 Interaction
• Transverse Faraday-Rotation Gradients Across the Jets of 15 Active Galactic Nuclei
• XMM-Newton observations of the eastern jet of SS433
• A study of broadband Faraday rotation and polarization behaviour over 1.3--10 GHz in 36 discrete radio sources
• Deep optical observations of the interaction of the SS 433 microquasar jet with the W 50 radio continuum shell
• Interacting Large-Scale Magnetic Fields and Ionised Gas in the W50/SS433 System
• Fisher Analysis on Wide-Band Polarimetry for Probing the Intergalactic Magnetic Field
• Probing the history of SS433's jet kinematics via Decade-resolution radio observations of W50
• JVLA S and X-band Polarimetry of the Merging Cluster Abell 2256

Cited by in corpus (8)

• Continuous Jets and Backflow Models for the Formation of W50/SS433 in Magnetohydrodynamics Simulations
• FOREST Unbiased Galactic Plane Imaging Survey with the Nobeyama 45-m Telescope (FUGIN) IV: Galactic Shock Wave and Molecular Bow Shock in the 4-kpc Arm of the Galaxy
• An Iterative Reconstruction Algorithm for Faraday Tomography
• Energy estimation of high energy particles associated with the SS433/W50 system through radio observation at 1.4 GHz
• Optimum Frequency of Faraday Tomography to Explore the Inter-Galactic Magnetic Field in Filaments of Galaxies
• Introduction to Faraday tomography and its future prospects
• Arcsecond-Scale X-ray Imaging and Spectroscopy of SS 433 with Chandra HETG
• Wavelets and sparsity for Faraday tomography