| Issue |
Astron. Astrophys. Suppl. Ser.
Volume 124, Number 1, July 1997
|
|
|---|---|---|
| Page(s) | 123 - 128 | |
| DOI | https://doi.org/10.1051/aas:1997182 | |
| Published online | 15 July 1997 | |
An atlas of X– and γ–ray pulse profiles of the Crab pulsar (PSR 0531+21): An analysis of energy and time variations *
1
Istituto Astronomico, Univ. "La Sapienza", Unità GIFCO-CNR, Via Lancisi 29, I–00161 Roma, Italy
2
Istituto di Astrofisica Spaziale, C.N.R., Via E. Fermi 21, I–00044, Frascati, Italy
3
Dipartimento di Fisica, Universitá degli Studi "Roma Tre", Via della Vasca Navale 84, I–00146 Roma, Italy
Received:
16
July
1996
Accepted:
16
November
1996
We present an atlas of X and γ-ray
pulse profiles of PSR 0531+21 (Crab
pulsar) measured since 1967. This atlas, containing 250 profiles, is useful to
study in detail the behaviour with time and energy of this important source
and to test models of the emission geometrical pattern. The atlas database
is also accessible from Mosaic.
An analysis of the energy dependence and time changes of the Crab pulsar
light curve (and in particular of the
ratio), based on the atlas database, is presented.
Key words: pulsars: PSR 0531 + 21 = crab pulsar / atlas / X-rays: stars / gamma rays: observations
© European Southern Observatory (ESO), 1997