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Browsing by Author "Krishan, V"

Browsing by Author "Krishan, V"

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  • Centrifugal acceleration of plasma in pulsar magnetosphere 
    Gangadhara, R. T; Krishan, V (Indian Academy of Sciences, 2003-12)
    We present a relativistic model for the centrifugal acceleration of plasma bunches and the coherent radio emission in pulsar magnetosphere. We find that rotation broadens the width of leading component compared to the width ...
  • Characteristics of synchrotron Čerenkov radiation 
    Pratap, R; Sasidharan, K; Krishan, V (The American physical Society, 1993-01)
    A diagrammatic technique has been worked out in the framework of nonequilibrium statistical mechanics as developed by Prigogine and co-workers to tackle the problem of radiation emission from a relativistic electron in an ...
  • Characterization of solar multi-scaling magnetic loop interactions 
    Rosa, R. K; Karlicky, M; Zanandrea, A; Sych, R. A; Hanumant, S. S; Krishan, V (American Institute of Physics, 2005-09)
    Solar magnetic loop structures can exist in a broad range of spatio-temporal scales and their mutual interactions are described by nonlinear processes of magnetic reconnection triggered as a secondary regime by a primary ...
  • Clustering of galaxies by inverse cascade in a turbulent medium 
    Krishan, V; Sivaram, C (Royal Astronomical Society, 1991-05)
    A definite physical mechanism based in inverse cascading is suggested which quite naturally yields a bottom-up hierarchical structure for galactic clustering. In this mechanism, nonlinear interactions between small fluid ...
  • Clustering of Galaxies by the Alpha-Effect 
    Krishan, V (Royal Astronomical Society, 1993-09-01)
    The development of large-scale flows from the stresses generated by small-scale flows in a Navier-Stokes system is studied in order to model the large-scale structure of the Universe. This process is an analogue of the ...
  • Coherent Plasma Processes and the Continuum Emission in Active Galactic Nuclei 
    Krishan, V; Wiita, P. J (Royal Astronomical Society, 1990-10)
    Stimulated Raman scattering processes appear to be able to produce the typical electromagnetic continuum of an active galactic nucleus (AGN). Seed photons beat through Raman forward-scattering to create Langmuir plasma ...
  • Collective acceleration in solar flares 
    Barletta, W; Gershtein, S. S; Krishan, V; Reiser, M; Sessler, A. M; Xie, M (The Royal Swedish Academy of Sciences, 1994)
    Solar flare data are examined with an eye to seeing if they suggest collective acceleration of ions. That, in fact, seems to be the case. The collective acceleration mechanism of Gershtein is reviewed and the possibilities ...
  • Comment on Two-Dimensional Steady-State Pressure Structure in a Coronal Loop 
    Krishan, V (Kluwer Academic Publishers, 1991-07)
  • Compton cross sections in highly dense plasmas 
    Krishan, V (Astronomical Society of India, 2002)
    The properties of the electromagnetic radiation undergo a fundamental change in the presence of a medium in general and a plasma in particular. Specially the dispersion relation is modified in a way that in a plasma, the ...
  • Compton Scattering, Pair Annihilation, and Pair Production in a Plasma 
    Krishan, V (International Astronomical Union, 2000)
    The square of the four-momentum of a photon in vacuum is zero. However, in an unmagnetized plasma, it is equal to the square of the plasma frequency. Further, the electron-photon coupling vertex is modified in a plasma to ...
  • Conductivity of an ion-acoustically turbulent plasma 
    Krishan, V (D.Reidel Publishing Co.,, 1978-09)
    Three different mechanisms are suggested for the non-linear saturation of the ion-acoustic instability. These include the indirect wave-particle interaction, the scattering on density fluctuations and the effects of energy ...
  • Continuum radiation due to collective plasma process in quasars 
    Gangadhara, R. T; Krishan, V (Indian Association for the Cultivation of Science, 1992)
  • Contribution of turbulence to Tully-Fisher relation 
    Prabhu, R. D; Krishan, V (Astronomical Society of India, 1996)
    We have proposed a model for the flat rotaion curves of spiral galaxies in an earlier paper of ours (Prabhu & Krishan 1994). We could resolve the galactic velocity field for the outer regions into a turbulent and a gravity ...
  • Coronal Loops 
    Krishan, V (Indian Institute of Astrophysics, Bangalore, 1986)
    The statistical treatment of the magnetohydrodynamically turbulent plasma is used to study the steady state configuration of the coronal loops. The stability of the plasma system is defined in terms of certain invariants ...
  • Curiosity, ambition and foolhardiness 
    Krishan, V (Indian Academy of Sciences, 2008)
  • Cylindrical Hall – MHD Waves: A Nonlinear Solution 
    Krishan, V; Varghese, B. A (Springer Netherlands, 2008-01)
    The exact nonlinear cylindrical solution for incompressible Hall – magnetohydrodynamic (HMHD) waves, including dissipation, essentially from electron – neutral collisions, is obtained in a uniformly rotating, weakly ionized ...
  • Description of accretion induced outflows from ultra-luminous sources to under-luminous AGNs 
    Ghosh, Shubhrangshu; Mukhopadhyay, Banibrata; Krishan, V; Khan, Manoranjan (Elsevier, 2010-01)
    We study the energetics of the accretion-induced outflow and then plausible jet around black holes/compact objects using a newly developed disc-outflow coupled model. Inter-connecting dynamics of outflow and accretion ...
  • Detection of Short-Period Coronal Oscillations during the Total Solar Eclipse of 24 October, 1995 
    Singh, J; Cowsik, R; Raveendran, A. V; Bagare, S. P; Saxena, A. K; Sundararaman, K; Krishan, V; Naidu, N; Samson, J. P. A; Gabriel, F (Springer, 1997-02)
    An experiment to search for short-period oscillations in the solar corona was conducted during the total solar eclipse of 1995 October 24 at Kalpi, India. The intensity in the continuum, centred around 5500 Å and with a ...
  • Different representations of a partially ionized plasma 
    Krishan, V (Indian Academy of Sciences, 2022-12)
    It is economical to devise ways and means to simplify a multi-species particle system. A partially ionized plasma consisting of electrons, ions and neutral particles can be described as a three-fluid, a two-fluid or a ...

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