Spectral indices for radio emission of 228 pulsars

作     者：Jun Han Chen Wang Jun Xu Jin-Lin Han 

作者机构：National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China School of Astronomy University of Chinese Academy of Sciences Beijing 100049 China 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2016年第16卷第10期

页      面：81-92页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported by the National Natural Science Foundation of China(No. 11473034) the Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences,Grant No.XDB09010200 

主　　题：pulsars: general    radiation mechanisms: general    radio continuum: general 

摘      要：We determine spectral indices of 228 pulsars by using Parkes pulsar data observed at 1.4 GHz, among which 200 spectra are newly determined. The indices are distributed in the range from -4.84 to -0.46. Together with known pulsar spectra from literature, we tried to find clues to the pulsar emission process. The wealCcorrelations between the spectral index, the spin-down energy loss rate E and the poten- tial drop in the polar gap Aψ hint that emission properties are related to the particle acceleration process in a pulsar＇s magnetosphere.