Discovery of a Steep-spectrum Low-luminosity Pulsar with the Murchison Widefield Array Article Swipe
N. A. Swainston
,
N. D. R. Bhat
,
M. Sokołowski
,
S. J. McSweeney
,
Sanjay Kudale
,
Shi Dai
,
K. R. Smith
,
Ian S. Morrison
,
R. M. Shannon
,
W. van Straten
,
Mengyao Xue
,
S. M. Ord
,
S. E. Tremblay
,
Bradley W. Meyers
,
A. Williams
,
G. Sleap
,
M. Johnston‐Hollitt
,
D. L. Kaplan
,
S. J. Tingay
,
R. B. Wayth
·
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.3847/2041-8213/abec7b
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.3847/2041-8213/abec7b
We report the discovery of the first new pulsar with the Murchison Widefield Array (MWA), PSR J0036−1033, a long-period (0.9 s) nonrecycled pulsar with a dispersion measure (DM) of 23.1 pc cm −3 . It was found after processing only a small fraction (∼1%) of data from an ongoing all-sky pulsar survey. Follow-up observations have been made with the MWA, the upgraded Giant Metrewave Radio Telescope (uGMRT), and the Parkes 64 m telescopes, spanning a frequency range from ∼150 MHz to 4 GHz. The pulsar is faint, with an estimated flux density ( S ) of ∼1 mJy at 400 MHz and a spectrum , where ν is frequency. The DM-derived distance implies that it is also a low-luminosity source (∼0.1 mJy kpc 2 at 1400 MHz). The analysis of archival MWA observations reveals that the pulsar’s mean flux density varies by up to a factor of ∼5–6 on timescales of several weeks to months. By combining MWA and uGMRT data, the pulsar position was determined to arcsecond precision. We also report on polarization properties detected in the MWA and Parkes bands. The pulsar’s nondetection in previous pulsar and continuum imaging surveys, the observed high variability, and its detection in a small fraction of the survey data searched to date, all hint at a larger population of pulsars that await discovery in the southern hemisphere, with the MWA and the future low-frequency Square Kilometre Array.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3847/2041-8213/abec7b
- https://iopscience.iop.org/article/10.3847/2041-8213/abec7b/pdf
- OA Status
- bronze
- Cited By
- 18
- References
- 73
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W3153156202
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Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W3153156202Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3847/2041-8213/abec7bDigital Object Identifier
- Title
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Discovery of a Steep-spectrum Low-luminosity Pulsar with the Murchison Widefield ArrayWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2021Year of publication
- Publication date
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2021-04-01Full publication date if available
- Authors
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N. A. Swainston, N. D. R. Bhat, M. Sokołowski, S. J. McSweeney, Sanjay Kudale, Shi Dai, K. R. Smith, Ian S. Morrison, R. M. Shannon, W. van Straten, Mengyao Xue, S. M. Ord, S. E. Tremblay, Bradley W. Meyers, A. Williams, G. Sleap, M. Johnston‐Hollitt, D. L. Kaplan, S. J. Tingay, R. B. WaythList of authors in order
- Landing page
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https://doi.org/10.3847/2041-8213/abec7bPublisher landing page
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https://iopscience.iop.org/article/10.3847/2041-8213/abec7b/pdfDirect link to full text PDF
- Open access
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YesWhether a free full text is available
- OA status
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bronzeOpen access status per OpenAlex
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https://iopscience.iop.org/article/10.3847/2041-8213/abec7b/pdfDirect OA link when available
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Murchison meteorite, Pulsar, Physics, Luminosity, Astronomy, Astrophysics, Spectrum (functional analysis), Geology, Galaxy, Meteorite, Quantum mechanics, ChondriteTop concepts (fields/topics) attached by OpenAlex
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18Total citation count in OpenAlex
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2025: 3, 2024: 2, 2023: 4, 2022: 9Per-year citation counts (last 5 years)
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73Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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