IIAP Publications: Recent submissions

  • Electronic transitions of aluminium monoxide. 
    Murty, P. S (North Holland Publishing Company, 1978-04)
    In view of the renewed interest in the electronic spectra of the AlO molecule, which is of both astrophysical and aeronomical interest, a systematic analysis of the available spectral data is carried out. A valid and ...
  • A Model Reflection Nebula in the Far Infrared 
    Shah, G. A; Krishna-Swamy, K. S (American Astronomical Society, 1981-01)
    We have considered a model of a reflection nebula with the star within a homogeneous plane-parallel slab of 1 pc thickness. The model is intended to imitate the Merope reflection nebula. The illuminating star is located ...
  • Absorption of intense electromagnetic beams in a magnetoplasma 
    Gopalswamy, N; Krishan, V (Kluwer Academic Publishers, 1980-11)
    The multiphoton inverse bremsstrahlung absorption of two intense electromagnetic beams passing through a magnetized plasma is studied. The rate of absorption of electromagnetic energy by the electrons is calculated by ...
  • A compilation of physical parameters of AP and AM stars as derived from energy distribution studies 
    Babu, G. S. D; Shylaja, B. S (Kluwer Academic Publishers, 1981-09)
    The physical parameters, such as the effective temperatures, radii, bolometric magnitudes and bolometric corrections of 87 Ap and Am stars out of the 125 compiled here are essentially based on the work done by the authors ...
  • A Large Decametric Wavelength Antenna Array for IPS Observations of Radio Sources 
    Sastry, Ch. V (International Astronomical Union, 1980)
  • Observations of the Structure of Type-IIIb Radio Bursts 
    Sastry, Ch. V; Subramanian, K. R; Krishnan, V (International Astronomical Union, 1980)
  • Current rate of nucleosynthesis and its implications 
    Mallik, D. C. V (Indian Academy of Sciences, 1981-06)
    The current rate of nucleosynthesis in the solar neighbourhood is re-evaluated on the basis of Arnett’s (1978) stellar yields, the mass loss models of Chiosi, Nasi and Sreenivasan (1978) and the initial mass function ...
  • Plasma heating in a sheared magnetic field 
    Krishan, V (Indian Academy of Sciences, 1981-12)
    The mechanism of spatial resonance of Alfven waves for heating a collisionless plasma is studied in the presence of a twisted magnetic field. In addition to modifying the equilibrium condition for a cylindrical plasma, the ...
  • Velocity Oscillations in the Solar Atmosphere 
    Bhattacharyya, J. C (Solar Physics, Vol. 24, No. 2, pp. 274 - 287, 1972-06)
    From a series of long duration continuous Doppler records of selected spectral lines, characteristics of solar velocity oscillations have been studied. Statistical distribution of the durations of the bursts of oscillations ...
  • Theoretical fringe profiles with crossed Babinet compensators in testing concave aspheric surfaces 
    Saxena, A. K; Lancelot, J. P (Optical Society of America., 1982)
    This paper presents the theory for the use of crossed Babinet compensators in testing concave aspheric surfaces. Theoretical fringe profiles for a sphere and for an aspheric surface with primary aberration are shown. ...
  • Holographic cylindrical grating for cosmic X-ray and XUV spectroscopy in grazing incidence 
    Singh, M; Singh, S (Optical Society of America, 1980-10)
    The theory of the holographically prepared grating on a cylindrical surface has been developed, to be applicable in grazing incidence, in a convergent beam of light and in transmission in the objective mode for the design ...
  • On the relationship between pulsars and supernova remnants 
    Kochhar, R. K (Indian Academy of Sciences, 1981-03)
    We propose that single stars in the mass range 4–6·5M ⊙, that explode as Supernovae of Type I, are totally disrupted by the explosion and form shell-type remnants. More massive single stars which explode as Supernovae of ...
  • Influence of solar wind variability of the recurrence of droughts 
    Venkatakrishnan, P (D. Reidel Publishing Co, 1982-11)
    The observed effects of solar flares and interplanetary sector crossings seem to indicate that particle precipitation in the earth's upper atmosphere decreases cyclonic activity in the troposphere. As an extrapolation to ...
  • A "variable" stellar object in a variable blue nebula V-V 1-7 
    Kameswara Rao, N; Gilra, D. P (The Observatory, 1981-08)
  • The structure of the Cygnus Loop at 34.5 MHz 
    Sastry, Ch. V; Shevgaonkar, R. K; Dwarakanath, K. S (Indian Academy of Sciences, 1981-09)
    The large supernova remnant Cygnus Loop was observed at 34.5 MHz with a low-frequency radio telescope at Gauribidanur, India. The structure of the object is presented on a radio map with a resolution of 26 arcmin x 40 ...
  • Plasma acceleration by ion-acoustic turbulence 
    Krishan, V (Kluwer Academic Publishers, 1980-12)
    An energetic proton beam passing through a stationary ionized medium, excites ion-acoustic turbulence. The ion-acoustic instability saturates due to the non-linear indirect wave-particle scattering. The electric field ...
  • Observations and interpretation of solar decameter type IIIb radio bursts 
    Krishan, V; Subramanian, K. R; Sastry, Ch. V (Kluwer Academic Publishers, 1980-06)
    Solar decameter bursts of Type IIIb are observed with a multichannel radiometer at wavelengths around 12m. The time and frequency resolutions were 10 ms and 100 kHz. Observations on the time structure of these bursts are ...
  • A time dependent model for spicule flow 
    Hasan, S. S; Venkatakrishnan, P (Kluwer Academic Publishers, 1981-09)
    A time dependent model for the flow of gas in a spicule is studied. In this model, the flow occurs in a magnetic flux sheath. Starting from hydrostatic equilibrium, the flux sheath is allowed to collapse normal to itself. ...
  • Observations and interpretation of solar decametric absorption bursts 
    Gopalswamy, N; Thejappa, G; Sastry, Ch. V (Indian Academy of Sciences, 1983-09)
    The observations of intensity reductions or absorption bursts in the solar decametric radio-continuum are reported. The reductions are interpreted as the absorption of continuum radiation by a shock-generated ion sound ...
  • On the correlation between exciter duration and decay constant of solar decameter Type III radio bursts 
    Subramanian, K. R; Krishan, V; Sastry, Ch. V (Kluwer Academic Publishers, 1981-04)
    It is observed that while there exists a strong correlation between the decay constant and the exciter duration for isolated type III radio bursts, it is absent for those type III radio bursts which are preceded by type ...

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