Astronomy & Astrophysics

Free access article

Issue		A&A Volume 448, Number 2, March III 2006
Page(s)		L13 - L17
Section		Letters
DOI		10.1051/0004-6361:200600008

A&A 448, L13-L17 (2006)
DOI: 10.1051/0004-6361:200600008

Letter

Searches for diffuse X-ray emission around millisecond pulsars: an X-ray nebula associated with PSR J2124-3358

C. Y. Hui and W. Becker

Max-Planck Institut für Extraterrestrische Physik, Giessenbachstrasse 1, 85741 Garching bei München, Germany

(Received 21 November 2005 / Accepted 19 January 2006)

Abstract
We report on diffuse X-ray emission associated with the nearby solitary millisecond pulsar PSR J2124-3358 detected with XMM-Newton and Chandra. The emission extends from the pulsar to the northwest by ~0.5 arcmin. The spectrum of the nebular emission can be modeled with a power-law of photon index $2.2\pm0.4$ , in line with the emission originating from accelerated particles in the post shock flow. For PSR J0437-4715, PSR J0030+0451 and PSR J1024-0719, which all have spin parameters comparable to that of PSR J2124-3358, no diffuse emission is detected down to a $3{-}\sigma$ limiting flux of ~ $4{-}7\times10^$ erg s^-1 cm^-2.

Key words: pulsars: individual: PSR J2124-3358, J0437-4715, J0030+0451, J1024-0719 -- stars: neutron -- X-rays: stars

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