Fast as Potoroo: Radio Continuum Detection of a Bow-Shock Pulsar Wind Nebula Powered by Pulsar J1638-4713
Lazarević S, Filipović MD, Dai S, Kothes R, Ahmad A, Alsaberi RZ, Balzan JC, Barnes LA, Cotton WD, Edwards PG, Gordon YA, Haberl F, Hopkins AM, Koribalski BS, Leahy D, Maitra C, Mićić M, Rowell G, Sasaki M, Tothill NF, Umana G, Velović V (2024)
Publication Type: Journal article
Publication year: 2024
Journal
DOI: 10.1017/pasa.2024.13
Abstract
We report the discovery of a bow-shock pulsar wind nebula (PWN), named Potoroo, and the detection of a young pulsar J1638-4713 that powers the nebula. We present a radio continuum study of the PWN based on 20-cm observations obtained from the Australian Square Kilometre Array Pathfinder (ASKAP) and MeerKAT. PSR J1638-4713 was identified using Parkes radio telescope observations at frequencies above 3 GHz. The pulsar has the second-highest dispersion measure of all known radio pulsars (1553 pc cm-3), a spin period of 65.74 ms and a spin-down luminosity of E = 6.1 × 1036 erg s-1. The PWN has a cometary morphology and one of the greatest projected lengths among all the observed pulsar radio tails, measuring over 21 pc for an assumed distance of 10 kpc. The remarkably long tail and atypically steep radio spectral index are attributed to the interplay of a supernova reverse shock and the PWN. The originating supernova remnant is not known so far. We estimated the pulsar kick velocity to be in the range of 1000 - 2000 km s -1 for ages between 23 and 10 kyr. The X-ray counterpart found in Chandra data, CXOU J163802.6-471358, shows the same tail morphology as the radio source but is shorter by a factor of 10. The peak of the X-ray emission is offset from the peak of the radio total intensity (Stokes I) emission by approximately 4.7", but coincides well with circularly polarised (Stokes V) emission. No infrared counterpart was found.
Authors with CRIS profile
Involved external institutions
University of Western Sydney
Australia (AU)
University of Adelaide
Australia (AU)
National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF)
Italy (IT)
National Research Council / Conseil national de recherches Canada
Canada (CA)
National Radio Astronomy Observatory
United States (USA) (US)
Commonwealth Scientific and Industrial Research Organisation (CSIRO)
Australia (AU)
University of Wisconsin - Madison
United States (USA) (US)
Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics
Germany (DE)
Macquarie University
Australia (AU)
University of Calgary
Canada (CA)
The University of Alabama
United States (USA) (US)
Australia (AU)
University of Adelaide
Australia (AU)
National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF)
Italy (IT)
National Research Council / Conseil national de recherches Canada
Canada (CA)
National Radio Astronomy Observatory
United States (USA) (US)
Commonwealth Scientific and Industrial Research Organisation (CSIRO)
Australia (AU)
University of Wisconsin - Madison
United States (USA) (US)
Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics
Germany (DE)
Macquarie University
Australia (AU)
University of Calgary
Canada (CA)
The University of Alabama
United States (USA) (US)
How to cite
APA:
Lazarević, S., Filipović, M.D., Dai, S., Kothes, R., Ahmad, A., Alsaberi, R.Z.,... Velović, V. (2024). Fast as Potoroo: Radio Continuum Detection of a Bow-Shock Pulsar Wind Nebula Powered by Pulsar J1638-4713. Publications of the Astronomical Society of Australia. https://doi.org/10.1017/pasa.2024.13
MLA:
Lazarević, Sanja, et al. "Fast as Potoroo: Radio Continuum Detection of a Bow-Shock Pulsar Wind Nebula Powered by Pulsar J1638-4713." Publications of the Astronomical Society of Australia (2024).
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