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International Journal of Astrophysics and Space Science

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Volume 5, Issue 4, August 2017

  • Statistical Characteristics of New Type Internal Wave in the Ionospheric F Region

    Jandieri George, Rahul Kaushik, Tugushi Nika

    Issue: Volume 5, Issue 4, August 2017
    Pages: 55-62
    Received: 21 June 2017
    Accepted: 5 July 2017
    Published: 31 October 2017
    DOI: 10.11648/j.ijass.20170504.11
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    Abstract: Second order statistical moments of new internal MHD wave in the ionospheric F region are investigated analytically by geometrical optics approximation. Degree of a curvature of a constant phase surface and the variance of an instant frequency measuring by experiment has been obtained for arbitrary correlation function of electron density fluctuati... Show More
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  • Diurnal Variation of Cosmic Ray Intensity at Different Group of Geomagnetic Index (Ap)

    Divya Dubey, Suryanshu Chudhary, Ambika Singh, Anil Kumar Tiwari

    Issue: Volume 5, Issue 4, August 2017
    Pages: 63-70
    Received: 1 September 2017
    Accepted: 22 September 2017
    Published: 6 November 2017
    DOI: 10.11648/j.ijass.20170504.12
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    Abstract: The solar modulation of Galactic Cosmic Rays (GCR) is revealed in the record of neutron monitors in terms of daily variation. Day-to-day and long term basis daily variations have been investigated for the recent period from 1965 to 2015 along with geomagnetic disruption index Ap on twelve-monthly average basis. Here Ap index has been used as a plac... Show More
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