Astron. Astrophys. Suppl. Ser.
Volume 124, Number 1, July 1997
|Page(s)||123 - 128|
|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 *
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
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
Table 2 is available only in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (22.214.171.124) or via http://cdsweb.u-strasbg.fr/Abstract.html
© European Southern Observatory (ESO), 1997