Two-Component Model for the Interstellar Scattering along the Line of Sight to the Pulsar PSR B0136+57
ZHOU Ai-Zhi1, TAN Jin-Yu1, Ali Esamdin2, WU Xin-Ji3
1Institute of Astrophysics, Huazhong Normal University, Wuhan 4300792Urumqi Observatory, the National Astronomical Observatories, Chinese Academy of Sciences, Urumqi 8300113Department of Astronomy, Peking University, Beijing 100871
Two-Component Model for the Interstellar Scattering along the Line of Sight to the Pulsar PSR B0136+57
ZHOU Ai-Zhi1, TAN Jin-Yu1, Ali Esamdin2, WU Xin-Ji3
1Institute of Astrophysics, Huazhong Normal University, Wuhan 4300792Urumqi Observatory, the National Astronomical Observatories, Chinese Academy of Sciences, Urumqi 8300113Department of Astronomy, Peking University, Beijing 100871
摘要A rigorous treatment of the refractive scintillation caused by a two-component interstellar scattering medium and a Kolmogorov form of density spectrum is discussed. It is assumed that the interstellar scattering medium is composed of a thin screen ISM and an extended interstellar medium. We conclude that the refractive scintillation caused by this two-component ISM scattering gives a more satisfactory explanation for the observed flux density variation than the single extended medium model along the line of sight to the pulsar PSR B0136+57.
Abstract：A rigorous treatment of the refractive scintillation caused by a two-component interstellar scattering medium and a Kolmogorov form of density spectrum is discussed. It is assumed that the interstellar scattering medium is composed of a thin screen ISM and an extended interstellar medium. We conclude that the refractive scintillation caused by this two-component ISM scattering gives a more satisfactory explanation for the observed flux density variation than the single extended medium model along the line of sight to the pulsar PSR B0136+57.
(Interstellar medium (ISM) and nebulae in external galaxies)
引用本文:
ZHOU Ai-Zhi;TAN Jin-Yu;Ali Esamdin;WU Xin-Ji. Two-Component Model for the Interstellar Scattering along the Line of Sight to the Pulsar PSR B0136+57[J]. 中国物理快报, 2009, 26(12): 129701-129701.
ZHOU Ai-Zhi, TAN Jin-Yu, Ali Esamdin, WU Xin-Ji. Two-Component Model for the Interstellar Scattering along the Line of Sight to the Pulsar PSR B0136+57. Chin. Phys. Lett., 2009, 26(12): 129701-129701.
[1] Wang N, Yan Z, Manchester R N and Wang H X 2008 Mon.Not. R. Astron. Soc. 385 1393 [2] Coles W A 1988 Proceedings of the AIP Conference(University of California, San Diego, CA, 18--19 January 1988) 174163 [3] Romani R W, Narayan R and Blandford R 1986 Mon. Not.R. Astron. Soc. 220 19 [4] Shishov V I 1993 Astron. Rep. 37 378 [5] Cordes J M and Rickett B J 1998 Astrophs. J. 507 846 [6] Stinebring D R et al 2000 Astrophs. J. 539 300(S2000) [7] Zhou A Z, Wu X J and Esamdin A 2003 Astro. Astrophs. 403 1059 [8] Zhou A Z, Wu X J and Esamdin A 2003 Chin. Phys.Lett. 20 1405 [9] Zhou A Z, Esamdin A and Wu X J 2003 Acta. Astron.Sinica. 44 suppl 254 [10] Zhou A Z, Esamdin A and Wu X J 2005 Astro.Astrophs. 438 909 [11] Blandford R, Narayan R and Romani R W 1986 Astrophs.J. 301 L53 [12] Dong L F, Fan W L, Wang H J, Zhang Q L and Wang L 2006 Chin. Phys. Lett. 23 3007 [13] Lu R H, Pan G S, Wang Z J, Wen Y Z, Liu W D, Wan S D, YuC X, Wang J, Xiao D L and Xu M 2005 Chin. Phys. Lett. 221471 [14] Liu F, Dong J Q and Gao Z 2005 Chin. Phys. Lett. 22 1170 [15] Qian S J and Zhang X Z 1996 Acta Astron. Sin. 37 421 [16] Hobbs G, Lorimer D R, Lyne A G and Kramer M 2005 Mon. Not. R. Astron. Soc. 360 974 [17] Bhat N D R, Rao A P and Gupta Y 1999 Astrophs. J. 121 483 [18] Henley D B, Shelton R L and Kuntz K D 2007 Astrophs.J. 661 304 [19] Sallmen S M, Korpela E J and Yamashita H 2008 Astrophs. J. 681 1310 [20] Shelton R L 2008 Space Science Reviews 143 303
2009, Vol. 26 
