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Observations of PSR J1357−6429 at 2.1 GHz with the Australia Telescope Compact Array

Citation

Kirichenko, A and Shibanov, Yu and Shternin, P and Johnston, S and Voronkov, MA and Danilenko, A and Barsukov, D and Lai, D and Zyuzin, D, Observations of PSR J1357−6429 at 2.1 GHz with the Australia Telescope Compact Array, Monthly Notices of the Royal Astronomical Society, 452, (3) pp. 3273-3280. ISSN 0035-8711 (2015) [Refereed Article]


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Copyright 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

Official URL: http://mnras.oxfordjournals.org/content/452/3/3273...

DOI: doi:10.1093/mnras/stv1420

Abstract

PSR J1357−6429 is a young and energetic radio pulsar detected in X-rays and γ-rays. It powers a compact pulsar wind nebula with a jet visible in X-rays and a large-scale plerion detected in X-ray and TeV ranges. Previous multiwavelength studies suggested that the pulsar has a significant proper motion of about 180 mas yr−1, implying an extremely high transverse velocity of about 2000 km s−1. In order to verify this, we performed radio-interferometric observations of PSR J1357−6429 with the Australia Telescope Compact Array (ATCA) in the 2.1-GHz band. We detected the pulsar with a mean flux density of 212 ± 5 μJy and obtained the most accurate pulsar position: RA = 13h57m02s.525(14), Dec. =−64°29'29".89(15). Using both new and archival ATCA data, we did not find any proper motion and estimated its 90 per cent upper limit as μ < 106 mas yr−1. The pulsar shows a highly polarized single pulse, as was observed earlier at 1.4 GHz. Spectral analysis revealed a shallow spectral index αν = 0.5 ± 0.1. Based on our new radio position of the pulsar, we discount the claim of an optical counterpart candidate reported previously.

Item Details

Item Type:Refereed Article
Keywords:pulsars, individual, PSR J1357-6429
Research Division:Physical Sciences
Research Group:Astronomical and Space Sciences
Research Field:Galactic Astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Physical Sciences
Author:Voronkov, MA (Dr Maxim Voronkov)
ID Code:105940
Year Published:2015
Web of Science® Times Cited:1
Deposited By:Mathematics and Physics
Deposited On:2016-01-20
Last Modified:2016-06-01
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