| Issue |
A&A
Volume 406, Number 2, August I 2003
|
|
|---|---|---|
| Page(s) | 639 - 644 | |
| Section | Stellar structure and evolution | |
| DOI | https://doi.org/10.1051/0004-6361:20030639 | |
| Published online | 17 November 2003 | |
The Crab pulsar and its red knot in the near-infrared*
Stockholm Observatory, AlbaNova, 106 91 Stockholm, Sweden
Corresponding author: jesper@astro.su.se
Received:
28
January
2003
Accepted:
22
April
2003
We present near-infrared observations obtained with ISAAC on the VLT
of the Crab pulsar and its environment. Photometry of the pulsar in 
,
H and 
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 
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.
Key words: pulsars: individual: PSR B0531+21 / ISM: supernova remnants / ISM: individual objects: Crab Nebula
© ESO, 2003
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