American Journal of Astronomy and Astrophysics

Archive

Volume 2, Issue 6, November 2014

  • Geomagnetic Disturbances and Its Impact on Ionospheric Critical Frequency (foF2) at High, Mid and Low Latitude Region

    Roshni Atulkar, Shivangi Bhardwaj, Prakash Khatarkar, Purushottam Bhawre, P. K. Purohit

    Issue: Volume 2, Issue 6, November 2014
    Pages: 61-65
    Received: 14 November 2014
    Accepted: 12 December 2014
    Published: 19 December 2014
    DOI: 10.11648/j.ajaa.20140206.11
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    Abstract: A geomagnetic storm is a major disturbance of Earth's magnetosphere that occurs when there is a very efficient exchange of energy from the solar wind into the space environment surrounding Earth. During solar and geomagnetic activities, critical frequency of F2 layer (foF2) varies in a great extent. In this Study, our main aim is to examine the eff... Show More
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  • The Theory of Relativistic Spontaneous Emission from Hydrogen Atom in Schwarzschild Black Hole

    Jahangir A. Dar

    Issue: Volume 2, Issue 6, November 2014
    Pages: 66-71
    Received: 19 November 2014
    Accepted: 23 December 2014
    Published: 29 December 2014
    DOI: 10.11648/j.ajaa.20140206.12
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    Abstract: The mechanism of spontaneous emission radiated by the relativistic hydrogen atom falling radially towards Schwarzschild black hole, on the basis of Newtonian mechanics and Bohr’s atomic theory is presented here. The energy radiated by this hydrogen atom is calculated as, ζ= AR(moτ/MB)-moc2, where, AR is a constant. The relation for Lorentz factorγ ... Show More
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  • The Measure Concentration of Convex Geometry in a Quasi Banach Spacetime behind the Supposedly Missing Dark Energy of the Cosmos

    Mohamed S. El Naschie

    Issue: Volume 2, Issue 6, November 2014
    Pages: 72-77
    Received: 10 November 2014
    Accepted: 24 November 2014
    Published: 6 January 2015
    DOI: 10.11648/j.ajaa.20140206.13
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    Abstract: Based on the Banach spaces motivated theory of convex geometry in high dimensionality we give a new confirmation of the derivation of the 95.5 per cent so called dark energy density of the cosmos. The result derives directly from the purely geometric-topological phenomenon of measure-mass concentration and gives an unqualified complete confirmation... Show More
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