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Browsing by Author "Basu, S"

Browsing by Author "Basu, S"

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  • The infall time-scale in the solar neighborhood 
    Basu, S (Astronomical Society of India, 1993)
    The Galactic disk is supposed to have been formed from gas condensing out from the halo. The rate at which this infall of gas occurs, the amount of infall, and the time scales over which gas falls on to the disc have ...
  • Ionospheric electron content and equivalent slab thickness in the equatorial region 
    Das Gupta, A; Basu, S; Bhar, J. N; Bhattacharyya, J. C (American Geophysical Union, 1975-02)
    The ionospheric total electron content and equivalent slab thickness in the equatorial region around 75° E have been studied. It is found that the slab thickness exhibits a strong latitudinal dependence with a maximum at ...
  • Ring Diagram Analysis of the Characteristics of Solar Oscillation Modes in Active Regions 
    Rajaguru, S. P; Basu, S; Antia, H. M (The American Astronomical Society, 2001-12)
    The presence of intense magnetic fields in and around sunspots is expected to modify solar structure and oscillation frequencies. Applying the ring diagram technique to data from the Michelson Doppler Imager on board the ...
  • The seismic sun 
    Basu, S (Astronomical Society of India, 2000)
    The "Seismic Sun" is a model of the Sun constructed using helioseismological deductions about the Sun. The seismic Sun is very similar to a standard solar model which incorporates gravitational settling of helium and heavy ...
  • Solar structure as revealed by 1 year LOWL data 
    Basu, S; Christensen-Dalsgaard, J; Schou, J; Thompson, M. J; Tomczyk, S (Astronomical Society of India, 1996)
    We have used solar frequencies obtained form 1 year of observations with LOWL instrument to investigate the radial stratification of the Sun. Models which include the diffusion of helium and heavy elements below the solar ...
  • The spatial and temporal evolution of gas and heavy elements in the galaxy 
    Basu, S (Astronomical Society of India, 1993)

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