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Astron. Astrophys. 327, L21-L24 (1997)
Letter to the Editor
A BeppoSAX observation of the Crab Pulsar (PSR B0531+21)
T. Mineo 1,
G. Cusumano 1,
A. Segreto 1,
E. Massaro 2,
D. Dal Fiume 3,
S. Giarrusso 1,
A. Matteuzzi 4,
L. Nicastro 3 and
A.N. Parmar 5
1 Istituto di Fisica Cosmica ed Applicazioni
all'Informatica C.N.R.,Via U. La Malfa 153, I-90146, Palermo,
Italy
2 Istituto Astronomico, Unita' GIFCO Roma-1, Universita'
"La Sapienza", Via Lancisi 29, I-00161 Roma, Italy
3 Istituto di Tecnologie E Studio delle Radiazioni
Extraterrestri CNR, Via P. Gobetti 101, I-40129, Bologna, Italy
4 BeppoSAX Science Data Center, c/o Nuova Telespazio, Via
Corcolle 19, I-00131 Roma, Italy
5 Astrophysics Division, Space Science Department of ESA,
ESTEC, Post box 299, 2200 AG Noordwijk, The Netherlands
Received 1 July 1997 / Accepted 22 July 1997
Abstract
The Crab Pulsar (PSR B0531+21) was observed by the four Narrow
Field Instruments onboard the Italian-Dutch satellite BeppoSAX in
August and September 1996, during the Science Verification Phase. The
fine time resolution (15
![[FORMULA]](img1.gif)
s) and high statistics provided phase histograms
of very good quality over the entire energy band (0.1-300 keV)
covered by BeppoSAX payload. In this letter we present a detailed
study of the variations in the light curve shape with energy and
evaluate the spectral index difference between the main features.
Key words: stars 
stars: neutron
pulsar:
individual
X-rays: stars
Send offprint requests to: T. Mineo: mineo@ifcai.pa.cnr.it
Contents
- 1. Introduction
- 2. Observation and Data Reduction
- 3. Shape of the pulse profile
- 4. Discussion
- Acknowledgements
- References
© European Southern Observatory (ESO) 1997
Online publication: April 6, 1998
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