Dr James McKee J.W.McKee@hull.ac.uk
Lecturer
Probing the Local Interstellar Medium with Scintillometry of the Bright Pulsar B1133 + 16
McKee, James W.; Zhu, Hengrui; Stinebring, Daniel R.; Cordes, James M.
Authors
Hengrui Zhu
Daniel R. Stinebring
James M. Cordes
Abstract
The interstellar medium hosts a population of scattering screens, most of unknown origin. Scintillation studies of pulsars provide a sensitive tool for resolving these scattering screens and a means of measuring their properties. In this paper, we report our analysis of 34 yr of Arecibo observations of PSR B1133 + 16, from which we have obtained high-quality dynamic spectra and their associated scintillation arcs, arising from the scattering screens located along the line of sight to the pulsar. We have identified six individual scattering screens that are responsible for the observed scintillation arcs, which persist for decades. Using the assumption that the scattering screens have not changed significantly in this time, we have modeled the variations in arc curvature throughout the Earth's orbit and extracted information about the placement, orientation, and velocity of five of the six screens, with the highest-precision distance measurement placing a screen at just 5.46-0.59+0.54 pc from the Earth. We associate the more distant of these screens with an underdense region of the Local Bubble.
Citation
McKee, J. W., Zhu, H., Stinebring, D. R., & Cordes, J. M. (2022). Probing the Local Interstellar Medium with Scintillometry of the Bright Pulsar B1133 + 16. The Astrophysical journal, 927(1), Article 99. https://doi.org/10.3847/1538-4357/ac460b
Journal Article Type | Article |
---|---|
Acceptance Date | Dec 22, 2021 |
Online Publication Date | Mar 8, 2022 |
Publication Date | Mar 1, 2022 |
Deposit Date | Nov 22, 2022 |
Publicly Available Date | Mar 28, 2024 |
Journal | Astrophysical Journal |
Print ISSN | 0004-637X |
Electronic ISSN | 1538-4357 |
Publisher | American Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 927 |
Issue | 1 |
Article Number | 99 |
DOI | https://doi.org/10.3847/1538-4357/ac460b |
Public URL | https://hull-repository.worktribe.com/output/4131504 |
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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0
Copyright Statement
© 2022. The Author(s). Published by the American Astronomical Society
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