Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-09-23
Astrophys.J. 579 (2002) L25-L28
Astronomy and Astrophysics
Astrophysics
6 pages, 2 figures, accepted for publication in ApJ Letters
Scientific paper
10.1086/344832
We report the discovery of PSR J1747-2958, a radio pulsar with period P = 98 ms and dispersion measure DM = 101 pc/cc, in a deep observation with the Parkes telescope of the axially-symmetric "Mouse" radio nebula (G359.23-0.82). Timing measurements of the newly discovered pulsar reveal a characteristic age Pdt/2dP = 25 kyr and spin-down luminosity dE/dt = 2.5e36 erg/s. The pulsar (timing) position is consistent with that of the Mouse's "head". The distance derived from the DM, ~2 kpc, is consistent with the Mouse's distance limit from HI absorption, < 5.5 kpc. Also, the X-ray energetics of the Mouse are compatible with being powered by the pulsar. Therefore we argue that PSR J1747-2958, moving at supersonic speed through the local interstellar medium, powers this unusual non-thermal nebula. The pulsar is a weak radio source, with period-averaged flux density at 1374 MHz of 0.25 mJy and luminosity ~1 mJy kpc^2.
Camilo Fernando
Gaensler Bryan M.
Lorimer Dunc. R.
Manchester Richard N.
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