PSR 0329+54,0834+06,1133+16射电累积脉冲轮廓相位分离谱

journal6 ›› 2010, Vol. 31 ›› Issue (4): 51-58.

PSR 0329+54,0834+06,1133+16射电累积脉冲轮廓相位分离谱

(湖南文理学院物理与电子科学学院,湖南常德 415000)

出版日期:2010-07-25 发布日期:2012-04-16
作者简介:杨江河(1965-),男，湖南临澧人,湖南文理学院物理与电子科学学院教授,主要从事天体物理研究.
基金资助:
湖南省“十一五”重点建设学科——光学基金资助项目;湖南省自然科学基金资助项目（10JJ3020）;国家自然科学基金资助项目(10573005;10633010)

Phase-Resolved Spectra of Radio Mean Pulse Profiles for PSR 0329+54,0834+06,1133+16

(College of Physics and Electronics,Hunan University of Arts and Science,Changde 415000,Hunan China)

Online:2010-07-25 Published:2012-04-16

摘要/Abstract

摘要：从相关资料中选取了3个射电累积脉冲轮廓信噪比较高的脉冲星(PSR 0329+54,0834+06,1133+16)，分析了它们射电累积脉冲轮廓的特征,并对轮廓进行了相位分离,得到了射电累积脉冲轮廓相位分离谱,同时也给出了不同相位处射电辐射与频率的关系.结果显示：它们的相位分离谱表现为不同的特征,1133+16的谱前后陡中间平, 而0329+54和0834+06的谱相似表现为前平后陡；根据分离谱的特征可对脉冲星进行分类,该分类有助于理解脉冲星的一些观测特性；各源在不同的相位段有不同的辐射强度与频率的相关关系,1133+16辐射强度与频率之间主要表现为负相关,并有很好的线性关系,说明1133+16的射电辐射谱为很好的幂律谱.在||>3°区间内辐射强度与频率之间的相关系数R>0.8,P<0.03.PSR 0329+54射电辐射与频率之间主要表现为正相关关系,在4°>>3°及<-3°区间内其相关系数为R>0.5,P<20%,说明该源的射电辐射基本满足幂律关系；PSR 0834+06各波段的辐射强度与频率关系在不同相位处不尽相同,说明该源的射电辐射不能很好地满足幂律关系.

关键词： 射电脉冲星, 累积脉冲轮廓, 相位分离谱

Abstract: Three pulsars (PSR 0329+54,0834+06,1133+16) with high quality signal-to-noise of radio mean pulse profiles are selected from the available literature.The characteristics of the radio mean pulse profiles are analyzed for three pulsars.The phase-resolved spectrum and the correlations between radio emissions flux and frequency at the same phase are obtained.The results are as follows: The characteristics of the phase-resolved spectra are different among three pulsars.For 1133+16,the spectra is steep at two sides of pulse profiles,otherwise flatter in the middle.For 0329+54 and 0834+06,the spectra are flat at the leading part and steeper at the trailing.According to those spectra characteristics,pulsars can be classified.For 1133+16,there are good correlations between radio emission and frequency at same phase,and when |Φ| > 3°,the correlation coefficient R>0.8 and chance probability P<0.03,which show that the radio emission of 1133+16 is power low spectrum.So,for 0329+54,when 4° > Φ > 3° and Φ < -3°,R>0.5,P<20%,and for 0834+06,those relationships are mutative and weakly at different phase,and means the radio emission may be not power low.

Key words: radio pulsars, mean pulse profiles, phase-resolved spectrum

杨江河. PSR 0329+54,0834+06,1133+16射电累积脉冲轮廓相位分离谱[J]. journal6, 2010, 31(4): 51-58.

YANG Jiang-He. Phase-Resolved Spectra of Radio Mean Pulse Profiles for PSR 0329+54,0834+06,1133+16[J]. journal6, 2010, 31(4): 51-58.

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