Open AccessMinimum entropy cumulation method of pulsar profile
Author(s) -
Hua Zhang,
Luping Xu
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.039701
Subject(s) - pulsar , physics , astrophysics , maximum entropy method , computational physics , entropy (arrow of time) , algorithm , computer science , thermodynamics
To obtain the cumulation profile of pulsar signal, the traditional method needs to identify its period first, and then fold the signal with the period. This method depends on the accuracy of the period, and it has no evaluation standard for the profile. In this paper we analyze the strong correlation between the cumulation profile and the period, and present a minimum entropy method of pulsar cumulation profile and its verification. Therefore this method is applied to the identification of pulsar cycle. The RXTE data and the simulation data are used to verify the effectiveness of the method.