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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.
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Keywords:
- pulsars /
- minimum entropy /
- cumulation profile /
- cycle identification
[1] Ji P Y,ZHU J 2008 Chin.Phys. B 17 356
[2] ESAMDIN A,Wu X J, Zhang J,Wang Na, Kang L S, Jin S Z, Zhang H B,Wang W X 2000 Acta Astrophysica Sinica 3 59(in Chinese)[伊·艾力、吴鑫基、张 晋、王 娜、康连生、金声震、张洪波、王维侠 2000 天体 3 259]
[3] Kramer M 1994 A&AS 107 527
[4] Xu X B, Wu X J 2002 Science in China Ser. A 12 1134 (in Chinese) [徐轩彬、吴鑫基 2002 中国科学(A辑) 12 1134]
[5] Zhong C X, Yang T G 2007 Acta Phys. Sin. 56 6157 (in Chinese) [仲崇霞、杨廷高 2007 56 6157]
[6] Taylor J H 1992 Phil. Trans R. Soc. Lond. 341 117
[7] Xie Z H, Xu L P, Ni G R 2008 Acta Phys. Sin. 57 6683 (in Chinese) [谢振华、许录平、倪广仁 2008 57 6683 ]
[8] Sheikh S I 2005 Ph. D. Dissertation (Maryland:University of Maryland)
[9] Li J X, Ke X Z 2008 Acta Astronomica Sinica 4 394 (in Chinese)[李建勋、柯熙政 2008 天文学报 4 394]
[10] Seward F D, Harnden F R, Helfand D J 1984 Astrophysical Journal 287 L19
[11] Li J X, Ke X Z 2010 Acta Phys. Sin. 59 8304 (in Chinese)[李建勋、柯熙政 2010 59 8304]
[12] Zhang H, Xu L P, Xie Q, Luo N 2011 Acta Phys. Sin. 50 (in Chinese) (in press) [张 华、许录平、谢 强、罗 楠 2011 50 ](已接受)
[13] Gregory P C, Loredo T J 1996 ApJ 473 1059
[14] Papoulis A, Pillai S U (Translated by Bao Z, Feng D Z, Shui P L)2004 McGraw-Hill (Xi’an Jiaotong University Press)p530 (in Chinese)[帕普里斯.A,佩莱.S.U著 保铮,冯大政,水鹏朗译 2004 概率、随机变量与随机过程 (西安交通大学出版社)第530页]
[15] Rxte. FTP:legacy.gsfc.nasa.gov.
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[1] Ji P Y,ZHU J 2008 Chin.Phys. B 17 356
[2] ESAMDIN A,Wu X J, Zhang J,Wang Na, Kang L S, Jin S Z, Zhang H B,Wang W X 2000 Acta Astrophysica Sinica 3 59(in Chinese)[伊·艾力、吴鑫基、张 晋、王 娜、康连生、金声震、张洪波、王维侠 2000 天体 3 259]
[3] Kramer M 1994 A&AS 107 527
[4] Xu X B, Wu X J 2002 Science in China Ser. A 12 1134 (in Chinese) [徐轩彬、吴鑫基 2002 中国科学(A辑) 12 1134]
[5] Zhong C X, Yang T G 2007 Acta Phys. Sin. 56 6157 (in Chinese) [仲崇霞、杨廷高 2007 56 6157]
[6] Taylor J H 1992 Phil. Trans R. Soc. Lond. 341 117
[7] Xie Z H, Xu L P, Ni G R 2008 Acta Phys. Sin. 57 6683 (in Chinese) [谢振华、许录平、倪广仁 2008 57 6683 ]
[8] Sheikh S I 2005 Ph. D. Dissertation (Maryland:University of Maryland)
[9] Li J X, Ke X Z 2008 Acta Astronomica Sinica 4 394 (in Chinese)[李建勋、柯熙政 2008 天文学报 4 394]
[10] Seward F D, Harnden F R, Helfand D J 1984 Astrophysical Journal 287 L19
[11] Li J X, Ke X Z 2010 Acta Phys. Sin. 59 8304 (in Chinese)[李建勋、柯熙政 2010 59 8304]
[12] Zhang H, Xu L P, Xie Q, Luo N 2011 Acta Phys. Sin. 50 (in Chinese) (in press) [张 华、许录平、谢 强、罗 楠 2011 50 ](已接受)
[13] Gregory P C, Loredo T J 1996 ApJ 473 1059
[14] Papoulis A, Pillai S U (Translated by Bao Z, Feng D Z, Shui P L)2004 McGraw-Hill (Xi’an Jiaotong University Press)p530 (in Chinese)[帕普里斯.A,佩莱.S.U著 保铮,冯大政,水鹏朗译 2004 概率、随机变量与随机过程 (西安交通大学出版社)第530页]
[15] Rxte. FTP:legacy.gsfc.nasa.gov.
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