Discovery of a Young, Highly Scattered Pulsar PSR J1032-5804 with the Australian Square Kilometre Array Pathfinder
Access Status
Authors
Date
2024Type
Metadata
Show full item recordCitation
Source Title
ISSN
Faculty
School
Collection
Abstract
We report the discovery of a young, highly scattered pulsar in a search for highly circularly polarized radio sources as part of the Australian Square Kilometre Array Pathfinder Variables and Slow Transients survey. In follow-up observations with the Parkes radio telescope, Murriyang, we identified PSR J1032−5804 and measured a period of 78.7 ms, a dispersion measure of 819 ± 4 pc cm−3, a rotation measure of −2000 ± 1 rad m−2, and a characteristic age of 34.6 kyr. We found a pulse scattering timescale at 3 GHz of ∼22 ms, implying a timescale at 1 GHz of ∼3845 ms, which is the third most scattered pulsar known and explains its nondetection in previous pulsar surveys. We discuss the identification of a possible pulsar wind nebula and supernova remnant in the pulsar’s local environment by analyzing the pulsar spectral energy distribution and the surrounding extended emission from multiwavelength images. Our result highlights the possibility of identifying extremely scattered pulsars from radio continuum images. Ongoing and future large-scale radio continuum surveys will offer us an unprecedented opportunity to find more extreme pulsars (e.g., highly scattered, highly intermittent, and highly accelerated), which will enhance our understanding of the characteristics of pulsars and the interstellar medium.
Related items
Showing items related by title, author, creator and subject.
-
Macquart, Jean-Pierre; Kanekar, N. (2015)The lack of detected pulsars at the Galactic Center (GC) region is a long-standing mystery. We argue that the high stellar density in the central parsec around the GC is likely to result in a pulsar population dominated ...
-
Han, J.; Van Straten, W.; Lazio, T.; Deller, A.; Sobey, C.; Xu, J.; Schnitzeler, D.; Imai, H.; Chatterjee, S.; Macquart, Jean-Pierre; Kramer, M.; Cordes, J. (2014)The magneto-ionic structures of the interstellar medium of the Milky Way and the intergalactic medium are still poorly understood, especially at distances larger than a few kiloparsecs from the Sun. The three-dimensional ...
-
Geyer, M.; Karastergiou, A.; Kondratiev, V.; Zagkouris, K.; Kramer, M.; Stappers, B.; Grießmeier, J.; Hessels, J.; Michilli, D.; Pilia, M.; Sobey, Charlotte (2017)© 2017 The Authors Published by Oxford University Press. We measure the effects of interstellar scattering on average pulse profiles from 13 radio pulsars with simple pulse shapes. We use data from the LOFAR High Band ...