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Title

PSR J1410-6132: a young, energetic pulsar associated with the EGRET source 3EG J1410-6147

Author(s)

O'Brien, J. T.;  Johnston, S.;  Kramer, M.;  Lyne, A. G.;  Bailes, M.;  Possenti, A.;  Burgay, Marta;  Lorimer, Duncan R.;  McLaughlin, Maura A.;  Hobbs, George B.;  Parent, D.;  Guillemot, L.

Abstract

We present the discovery of PSR J1410−6132, a 50-ms pulsar found during a high-frequency survey of the Galactic plane, using a seven-beam 6.3-GHz receiver on the 64-m Parkes radio telescope. The pulsar lies within the error box of the unidentified Energetic Gamma Ray Experiment Telescope (EGRET) source 3EG J1410−6147, has a characteristic age of 26 kyr and a spin-down energy of 1037 erg s−1. It has a very high dispersion measure of 960 ± 10 cm−3 pc and the largest rotation measure of any pulsar, RM = +2400 ± 30 radm−2. The pulsar is very scatter-broadened at frequencies of 1.4 GHz and below, making pulsed emission almost impossible to detect. Assuming a distance of 15 kpc, the pulsar’s spin-down energy and a γ -ray efficiency factor of ∼10 per cent is sufficient to power the γ -ray source. We therefore believe that we have identified the nature of 3EG J1410−6147. This new discovery suggests that deep targeted high-frequency surveys of inner-galaxy EGRET sources could uncover further young, energetic pulsars.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Information and Communication Technologies. Centre for Astrophysics and Supercomputing

Source

Monthly Notices of the Royal Astronomical Society, Vol. 388, no. 1 (Jul 2008), pp. L1-L5

Publication year

2008

FOR Code(s)

0201 Astronomical and Space Sciences;  020110 Stellar Astronomy and Planetary Systems

Keyword(s)

Emission;  Gamma-ray sources;  J1410-6132;  Pulsars;  Scattering

Publisher

Wiley-Blackwell Publishing

ISSN

0035-8711

Publisher URL

http://dx.doi.org/10.1111/j.1745-3933.2008.00481.x

Copyright

Copyright © 2008 The Authors. Journal compilation copyright © 2008 Royal Astronomical Society. The accepted manuscript is reproduced in accordance with the copyright policy of the publisher. The definitive publication is available at www.interscience.wiley.com.

Full text

Peer reviewed