The Crab pulsar and its red knot in the near-infrared

Details The Crab pulsar and its red knot in the near-infrared The Crab pulsar and its red knot in the near-infrared

2003-06-10

arxiv.org/abs/astro-ph/0306188v1

Astron.Astrophys. 406 (2003) 639-644

Astronomy and Astrophysics

Astrophysics

Accepted by A&A

Scientific paper

10.1051/0004-6361:20030639

We present near-infrared observations obtained with ISAAC on the VLT of the Crab pulsar and its environment. Photometry of the pulsar in Js, H and Ks shows the pulsar spectrum to extend fairly smoothly from the UV/optical regime. PSF subtraction of the pulsar allows us to study its immediate neighborhood in some detail. In particular, the knot positioned just 0.6 arcsec from the pulsar has been revealed in the IR. Using also archival HST data for the knot, we have measured its broad band spectrum to rise steeply into the IR, in contrast to the spectrum of the pulsar itself.

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