Chandra Observations of the Young Pulsar PSR B0540-69

(2) MIT); A.H. Rots (1); D.E. Graessle (1); F.D. Seward (1) ((1) SAO; H.L. Marshall (2); M. Karovska (1); N.S. Schulz (2); P. Kaaret (1); S.S. Murray (1); T.L. Aldcroft (1)

arxiv: astro-ph/0008388 · v1 · submitted 2000-08-24 · 🌌 astro-ph

Chandra Observations of the Young Pulsar PSR B0540-69

P. Kaaret (1) , H.L. Marshall (2) , T.L. Aldcroft (1) , D.E. Graessle (1) , M. Karovska (1) , S.S. Murray (1) , A.H. Rots (1) , N.S. Schulz (2)

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F.D. Seward (1) ((1) SAO (2) MIT)

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keywords pulsarb0540-69chandraindexcompactmeasurementsnebulaphoton

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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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Chandra Observations of the Young Pulsar PSR B0540-69

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