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Browsing by Author "Chitre, S. M"

Browsing by Author "Chitre, S. M"

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  • Ambipolar diffusion in the solar atmosphere 
    Chitre, S. M; Krishan, V (Royal Astronomical Society, 2001-05)
    The process of non-linear ambipolar diffusion in the region overlying the solar surface can be an effective mechanism for producing sharp magnetic structures and current sheets. These may be the sites responsible for the ...
  • Are polar faculae generated by a local dynamo? 
    Sivaraman, K. R; Antia, H. M; Chitre, S. M (Springer, 2010)
    Polar faculae (PF) are bright, small-scale structures measuring a few seconds of arc, populating the polar zones at latitudes >50°. They possess magnetic fields ranging from 150 to 1,700 Gauss and largely constitute the ...
  • Blueshift and spectral features of the gravitational searchlight 
    Chitre, S. M; Narlikar, J. V; Kapoor, R. C (Plenum Publishing Corporation, 1975-10)
    It is shown that a photon emitted in the forward direction by a charged particle moving in an equatorial circular orbit centred on a highly collapsed mass M, the radius being slightly in excess of one and a half times the ...
  • Can 3He redistribution solve the solar neutrino problem ? 
    Antia, H. M; Chitre, S. M (Astronomical Society of India, 1999)
  • Effect of a magnetic field on solar oscillation frequencies 
    Antia, H. M; Chitre, S. M (Astronomical Society of India, 2000)
  • Generation of kinetic helicity from irrotational motions 
    Krishan, V; Chitre, S. M (Astronomical Society of India, 1999)
    Vortical and helical fluctuations are an integral part of any turbulent fluid. A turbulent magnetohydrodynamic system with net kinetic helicity is known to support the growth of a large scale magnetic field through the ...
  • Generation of Magnetic Structures on the Solar Photosphere 
    Gangadhara, R. T; Krishan, V; Bhowmick, A. K; Chitre, S. M (IOP Publishing, 2014-06-20)
    The lower solar atmosphere is a partially ionized plasma consisting of electrons, ions, and neutral atoms. In this, which is essentially a three-fluid system, the Hall effect arises from the treatment of the electrons and ...
  • Gravitational searchlight and its astrophysical applications 
    Chitre, S. M; Narlikar, J. V; Kapoor, R. C (Nature Publishing Group, 1974-12)
    Attention is given to an interesting effect associated with light emitted in the forward direction by a source circulating in an equatorial plane around a highly collapsed object or a black hole. The emitted light received ...
  • Helioseismic constraints on the proton-proton reaction cross-section 
    Antia, H. M; Chitre, S. M (Astronomical Society of India, 2000)
  • Helioseismology and solar neutrinos 
    Chitre, S. M (Astronomical Society of India, 2000)
  • How well do we know our Sun? 
    Chitre, S. M (Indian Institute of Astrophysics, Bangalore, 1988)
    The role of Our Sun as a valuable astrophysical laboratory for testing theories of stellar physics is highlighted. The state of our knowledge concerning the solar interior and the possible probes for gaining insight into ...
  • A Journey to the Centre of a Neutron Star 
    Chitre, S. M (Astronomical Society of India, 1973)
  • Long-period oscillations of the sun's interior 
    Davila, J. M; Chitre, S. M (Astronomical Society of India, 1996)
    The long-period modes of a differentially rotating, solar-type star are consided. Two modes are found. The non-axisymmetric modes are Rossby waves, also known as r-modes, with the Coriolis force as the dominant restoring ...
  • Mean field solar surface dynamo in the presence of partially ionized plasmas and sub-surface shear layer 
    Paradkar, B. S; Chitre, S. M; Krishan, V (Oxford University Press on behalf of the Royal Astronomical Society, 2019-09)
    A non-linear α − Ω dynamo in the partially ionized turbulent plasma in the presence of sub-surface velocity shear is studied with mean-field electrodynamics. Such a dynamo is probably operational in the near-surface region ...
  • Probes of the solar interior 
    Chitre, S. M; Antia, H. M (Astronomical Society of India, 1998)
    The interior of the sun is not directly accessible to observations. Nonetheless, it is possible to infer the physical conditions prevailing in the solar interior with the help of theory of stellar structure and the powerful ...
  • Redetermination of the Hubble Constant and the Deceleration Parameter 
    Chitre, S. M (Astronomical Society of India, 1975-03)
  • Schwarzschild orbital topography and high doppler blueshifts 
    Stoeger, W. R; Chitre, S. M; Narlikar, J. V; Kapoor, R. C (Nature Publishing Group, 1975-01)
  • Sizing up the universe with cosmic illusions 
    Chitre, S. M (Astronomical Society of India, 1994)
    The role of gravitational lenses as valuable tools for astrophysics and cosmology is highlighted. The importance of studying gravitational lens systems for inferring the nature and distribution of gravitating matter, both ...
  • Solar Convection and Oscillations 
    Chitre, S. M (Indian Institute of Astrophysics, Bangalore, 1986)
    A wide variety of gravity and acoustic wave motions have been detected at the surface of the Sun as Doppler shifts of spectral lines. These velocity field provide a valuable probe for studying the internal solar structure ...
  • Straight arcs in gravitational lens systems 
    Narasimha, D; Chitre, S. M (Astronomical Society of India, 1993)
    Faint straight arcs extending over ten to twenty arcseconds have been observed behind rich clusters of galaxies elongated by the lensing action of the foreground cluster. When a cluster of galaxies has its projected surface ...

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