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Browsing by Author "Satya Narayanan, A"

Browsing by Author "Satya Narayanan, A"

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  • On the Rate of Change of Period for Accelerated Motion and Their Implications in Astrophysics 
    Rajamohan, R; Satya Narayanan, A (Progress in Physics, 2007-04)
    We have derived in this paper, the relationship that needs to be satisfied when length measurements are expressed in two different units. Interesting relationships emerge when the smaller of the two units chosen is a ...
  • Period-brightness relationship in chromospheric bright points 
    Kariyappa, R; Satya Narayanan, A; Dame, L (Astronomical Society of India, 2005-03)
    Chromospheric bright points are sites where intense heating takes place by 3-min period waves. A 35-min-long time series of photographic spectra obtained in CaII H-line on a quiet region at the center of the solar disk ...
  • Pressure structure of solar coronal loops. III 
    Sreedharan, T. D; Sasidharan, K; Satya Narayanan, A; Krishan, V (Springer Netherlands, 1992-12)
    The theory of ideal magnetohydrodynamic turbulence in cylindrical geometry is used to study the steady-state structure of a coronal loop. The pressure profile is derived from MHD equations by representing the velocity and ...
  • Rotating light house effect 
    Rajamohan, R; Satya Narayanan, A (Global Journals Inc., 2013-07)
    We clarify as to how a precession period appears in the analysis of periodic phenomenon in Astrophysics. The observed redshift that is related to this phenomenon is shown to be 2a/V = 2 / T, where ‘a’ is the relative ...
  • Seismology of the solar corona through observations of metric type IV radio burst emission 
    Ramesh, R; Kathiravan, C; Satya Narayanan, A (Anita Publications, 2004)
    We present metric radio observation of a transient. quasi-periodic type IV burst emission from the solar corona following the hard X-ray/H¦Á flare of November 23, 2000. The radio event lasted for about 121s, and the ...
  • Self organization in quasi two-dimensional hydrodynamic flows 
    Satya Narayanan, A (The Royal Swedish Academy of Sciences, 1993-06)
    The cascading characteristics of the invariants of 2D and 3D hydrodynamically turbulent media are well known. Analogous to the 2D case, here we set up a variational principle for the 3D case by invoking the differential ...
  • A simple model for coronal loops and their stability 
    Satya Narayanan, A (European Space Agency, 1999-12)
  • Study of MHD surface waves along the interfaces of the magneto sheath, boundary layer and magnetosphere with the effect of solar wind 
    Rathinavelu, G. D; Sivaraman, M; Satya Narayanan, A; Somasundaram, K (Astronomical Society of India, 2007-12)
    The magnetospheric boundary layer, which is the interface between the magneto sheath and the magnetosphere, has been considered to be the plasma slab surrounded by moving and static plasma media on either side. The ...
  • Surface waves in a two layered fluid model with an inclined magnetic field 
    Satya Narayanan, A (Astronomical Society of India, 1996)
    We consider a simple two layer fluid model to investigate surface waves arising due to the interaction between two fluids of different densities. The interface separates the convection zone and the atmosphere of the Sun. ...
  • Viscous damping of Alfven surface waves with steady flows 
    Rathinavelu, G. D; Sivaraman, M; Satya Narayanan, A (Springer, 2010)
    The dispersion relation of Alfvén Surface Waves propagating along the moving viscous plasma–vacuum interface has been derived and solved numerically. The plasma layer is below while the upper layer is assumed to be vacuum. ...
  • Viscous damping of Alfvén surface waves at a magnetic interface 
    Rathinavelu, G. D; Sivaraman, M; Satya Narayanan, A (IOP Publishing, 2010-02)
    The dispersion relation for the propagation of viscous Alfvén surface waves along viscous plasma-plasma interface has been derived. Two modes of Alfvén surface waves are found to propagate with their characteristics depend ...
  • Waves and oscillations in nature: an introduction 
    Satya Narayanan, A; Saha, S. K (CRC Press, 2015)
    Waves and oscillations are found in large scales (galactic) and microscopic scales (neutrino) in nature. Their dynamics and behavior heavily depend on the type of medium through which they propagate.Waves and Oscillations ...

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