An inverse Compton scattering (ICS) model of pulsar emission - II. Frequency behavior of pulse profiles

Citation
Gj. Qiao et al., An inverse Compton scattering (ICS) model of pulsar emission - II. Frequency behavior of pulse profiles, ASTRON ASTR, 377(3), 2001, pp. 964-971
Citations number
38
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY & ASTROPHYSICS
ISSN journal
1432-0746 → ACNP
Volume
377
Issue
3
Year of publication
2001
Pages
964 - 971
Database
ISI
SICI code
1432-0746(200110)377:3<964:AICS(M>2.0.ZU;2-2
Abstract
The shapes of pulse profiles, especially their variations with respect to o bserving frequencies, are very important to understand emission mechanisms of pulsars. However, no previous attempt has been made to interpret their c omplicated phenomenology. In this paper, we present theoretical simulations for the integrated pulse profiles and their frequency evolution within the framework of the inverse Compton scattering (ICS) model proposed by Qiao ( 1988) and Qiao & Lin (1998). Using the phase positions of the pulse compone nts predicted by the "beam-frequency figure" of the ICS model, we present G aussian fits to the multi-frequency pulse profiles for some pulsars. It is shown that the model can reproduce various types of the frequency evolution behaviors of pulse profiles observed.