3273 Kirichenko.pdf (2.74 MB)
Observations of PSR J1357−6429 at 2.1 GHz with the Australia Telescope Compact Array
journal contribution
posted on 2023-05-18, 16:08 authored by Kirichenko, A, Shibanov, Yu, Shternin, P, Johnston, S, Voronkov, MA, Danilenko, A, Barsukov, D, Lai, D, Zyuzin, DPSR 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.
History
Publication title
Monthly Notices of the Royal Astronomical SocietyVolume
452Pagination
3273-3280ISSN
0035-8711Department/School
School of Natural SciencesPublisher
Blackwell Publishing LtdPlace of publication
9600 Garsington Rd, Oxford, England, Oxon, Ox4 2DgRights statement
?Copyright 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.Repository Status
- Open