G359.13142-0.20005: A steep spectrum radio pulsar candidate with an X-ray counterpart running into the Galactic Center Snake (G359.1-0.2)

F Yusef-Zadeh; Jun-Hui Zhao; R Arendt; M Wardle; C. O Heinke; M Royster; C Lang; J Michail

doi:10.48550/arxiv.2402.12441

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G359.13142-0.20005: A steep spectrum radio pulsar candidate with an X-ray counterpart running into the Galactic Center Snake (G359.1-0.2)

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G359.13142-0.20005: A steep spectrum radio pulsar candidate with an X-ray counterpart running into the Galactic Center Snake (G359.1-0.2)

F Yusef-Zadeh, Jun-Hui Zhao, R Arendt, M Wardle, C. O Heinke, M Royster, C Lang and J Michail

arXiv.org

Cornell University

02/19/2024

DOI: 10.48550/arxiv.2402.12441

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Preprint (Author's original) This preprint has not been evaluated by subject experts through peer review. Preprints may undergo extensive changes and/or become peer-reviewed journal articles. Open Access

Abstract

The Snake is a remarkable Galactic center radio filament with a morphology characterized by two kinks along its $\sim 20'$ extent. The major and minor kinks are located where the filament is most distorted from a linear magnetized structure running perpendicular to the Galactic plane. We present {\em Chandra}, VLA, and MeerKAT data and report the detection of an X-ray and radio source at the location of the major kink. High-resolution radio images of the major kink reveal a compact source with a steep spectrum with spectral index alpha ~ -2.7 surrounded by extended emission. The radio luminosity and steep spectrum of the compact source are consistent with a pulsar. We also show flattening of the spectrum and enhanced synchrotron emissivity away from the position of the major kink along the Snake, which suggests injection of relativistic particles along the Snake. We argue that the major kink is created by a fast-moving (~500-1000 km/s), object punching into the Snake, distorting its magnetic structure, and producing X-ray emission. X-ray emission pinpoints an active acceleration site where the interaction is taking place. A secondary kink is argued to be induced by the impact of the high-velocity object producing the major kink.

Physics - High Energy Astrophysical Phenomena

Details

Title: Subtitle: G359.13142-0.20005: A steep spectrum radio pulsar candidate with an X-ray counterpart running into the Galactic Center Snake (G359.1-0.2)
Creators: F Yusef-Zadeh
Jun-Hui Zhao
R Arendt
M Wardle
C. O Heinke
M Royster
C Lang - University of Iowa
J Michail
Resource Type: Preprint
Publication Details: arXiv.org
DOI: 10.48550/arxiv.2402.12441
eISSN: 2331-8422
Publisher: Cornell University; Ithaca, New York
Language: English
Date posted: 02/19/2024
Academic Unit: Liberal Arts and Science Admin; Physics and Astronomy
Record Identifier: 9984560418502771

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