Chandra Observations of the Young Pulsar PSR B0540-69

Details Chandra Observations of the Young Pulsar PSR B0540-69 Chandra Observations of the Young Pulsar PSR B0540-69

2000-08-24

arxiv.org/abs/astro-ph/0008388v1

Astronomy and Astrophysics

Astrophysics

12 pages, accepted by the Astrophysical Journal

Scientific paper

10.1086/318287

The young pulsar PSR B0540-69 was one of the first targets observed with the Chandra X-Ray Observatory. The high angular resolution of Chandra allows us to resolve the compact nebula surrounding the pulsar. We have determined a position for PSR B0540-69 of R.A. = 05h 40m 11s.221, decl. = -69o 19' 54".98 (J2000) with a 1-sigma radial uncertainty of 0.7". Combining our measurements of the pulsar period with previous measurements covering a span of 12 years, we derive a braking index of 2.08. The spectrum of the pulsed emission is consistent with a power-law with a photon index of 1.83 +/- 0.13. The compact nebula has a softer spectrum with a photon index of 1.85 to 2.26.

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