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

J.T. O'Brien , S. Johnston , M. Kramer , A.G. Lyne , M. Bailes , A. Possenti , M. Burgay , D.R. Lorimer , M.A. Mclaughlin , G. Hobbs , D. Parent (1) , L. Guillemot (1)

1 CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan

We present the discovery of PSR J1410-6132, a 50-ms pulsar found during a high-frequency survey of the Galactic plane, using a 7-beam 6.3-GHz receiver on the 64-m Parkes radio telescope. The pulsar lies within the error box of the unidentified EGRET source 3EG J1410-6147, has a characteristic age of 26 kyr and a spin-down energy of 10^37 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 rad m^-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 gamma-ray efficiency factor of ~10 per cent is sufficient to power the gamma-ray source. We therefore believe 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.

Domaines: Cosmologie et astrophysique extra-galactique [astro-ph.CO]; Astrophysique [astro-ph]

J.T. O'Brien, S. Johnston, M. Kramer, A.G. Lyne, M. Bailes, et al.. PSR J1410-6132: A young, energetic pulsar associated with EGRET source 3EG J1410-6147. Monthly Notices of the Royal Astronomical Society, 2008, 388, pp.L1-L5. ⟨10.1111/j.1745-3933.2008.00481.x⟩. ⟨in2p3-00329814⟩