IIAP Publications: Recent submissions

  • Abundance analysis of the long period southern Cepheid RZ Vel 
    Giridhar, S; Goswami, A; Arellano Ferro, A (Indian Academy of Sciences, 1991-03)
    An abundance analysis is conducted for the long period (P = 20.4 days), young classical Cepheid RZ Vel, a recognized member of an OB association. The results of the analysis are compared with the photometric study by Eggen ...
  • Fundamental interactions in the early universe 
    Sivaram, C (Springer, 1994-05)
    A unified approach to fundamental interactions as explored earlier is further elaborated and its consequences for the early universe studied especially in connection with the energy dependence of the coupling constants.
  • Mond, dark matter and the cosmological constant 
    Sivaram, C (Springer, 1994-09)
    A possible connection between MOND (Modification of Newtonian Dynamics) proposed as an alternative hypothesis to dark matter in galaxies and clusters and a residual cosmological constant term dominating cosmological dynamics ...
  • On structure formation in the universe 
    Satya Narayanan, A (Springer, 1994-12)
    The formation of structures in the universe is one of the most challenging problems of cosmology. In this paper, an attempt to explain the formation of galaxies through the generation of vortices (with dissipation) in an ...
  • Scattering by black holes: a simulated potential approach 
    Aguirregabiria, J. M; Vishveshwara, C. V (Elsevier B.V, 1996-01)
    The effective potential appearing in the scattering of scalar, electromagnetic and gravitational waves by a Schwarzschild black hole is replaced with potentials for which the exact analytical solutions are known. It is ...
  • Fundamental interactions in the early universe 
    Sivaram, C (Springer, 1994-12)
    A unified approach to fundamental interactions as explored earlier is further elaborated and its consequences for the early universe studied especially in connection with the energy dependence of the coupling constants.
  • Constraints on cosmic electric charge asymmetry and neutrino charge from the microwave background 
    Sengupta, S; Pal, B. P (Elsevier B.V, 1996-01)
    We point out that an overall electric charge asymmetry in the universe will generate an anisotropy in the cosmic microwave background radiation (CMBR) via the Sach-Wolfe effect. From this, an upper limit on the electric ...
  • Cherenkov radiation by massless neutrinos 
    D'Olivo, J. C; Nieves, J. F; Pal, P. B (Elsevier Science B.V, 1996-01)
    Due to their weak interactions, neutrinos can polarize a medium and acquire an induced charge. We consider the Cherenkov radiation emitted by neutrinos due to their effective electromagnetic interactions as they pass through ...
  • Partial redistribution effects on line polarization in the presence of velocity fields 
    Nagendra, K. N (Springer, 1996-03)
    Velocity fields in line formation regions strongly affect the line polarization. The conventionally used observer's frame method of solving the polarized transfer equation becomes expensive and inaccurate for partial ...
  • Equilibrium of a charged test particle with spin in the Kerr - Newman spacetime 
    Aguirregabiria, J. M; Chamorro, A; Suinaga, J; Vishveshwara, C. V (IOP Publishing, 1996-03)
    The equilibrium of a charged test particle with spin placed in the field of the Kerr - Newman metric is studied. This is an extension of the earlier work which considered a charged test particle without spin. Now, both the ...
  • Neutrino effective charge and cerenkov radiation 
    D'Olivo, J. C; Nieves, J. F; Palash, B. P (Elsevier B.V., 1996-05)
    We consider the Čerenkov radiation emitted by neutrinos due to their effective electromagnetic interactions as they pass through a polarisable medium. The effect exists even for massless, chiral neutrinos, and no physics ...
  • Axisymmetric MHD equilibrium of a self-gravitating incompressible fluid 
    Satya Narayanan, A (Royal Swedish Academy of Sciences, 1996-05)
    The equilibrium of a self-gravitating incompressible fluid with a magnetic field and large electrical conductivity is studied. The magnetic fields and fluid motions are assumed to have a symmetry about an axis. The basic ...
  • On the quantization of general relativity in anholonomic variables 
    Borzeszkowski, H. H. V; de Sabbata, V; Sivaram, C; Treder, H. J (Springer, 1996-04)
    In discussing Bohr-Sommerfeld-like quantum rules for gravity, it is argued that Einstein's Riemannian theory of general relativity rather leads to a quantum field-mechanics than to a quantum-field theory of gravity. We ...
  • Twistors, torsion and quantization of space-time 
    Sabbata, V; Sivaram, C (Springer, 1996-04)
    The analogies between twistors and torsion are developed. TheSL(2,C) group of transformations is used to suggest a unified link between the approaches. The role of space-time defects in the quantization of space-time is ...
  • Is the Hubble flow a result of inverse cascade? 
    Krishan, V (Indian Academy of Sciences, 1996-10)
  • Comet Hyakutake 
    Vasundhara, R (Indian Academy of Sciences, 1996-06)
  • Some further measurements of Uranian ring condensations 
    Vasundhara, R; Bhattacharyya, J. C; Rajamohan, R; Mahra, H. S (Kluwer Academic Publishers, 1983)
    The results of photometric observations of the occultation of BD-19 degree 4222 by Uranus on April 26, 1981 from two stations in India conform with the model proposed by Elliot et al. (1981).
  • An Interpretation of the Millisecond time variation in Hard X-ray solar flares 
    Krishan, V; Kundu, M. R (International Astronomical Union, 1985)
    Recent observations of the fast time variability in the hard X-ray emission from solar flares are interpreted. The fast spikes are assumed to be superimposed on the thermal X-ray emission. The rise and fall of a spike are ...
  • Spectrophotometry of Nova Muscae 1983 
    Shylaja, B. S (The observatory, 1983-08)
  • A Newtonian interpretation of the parameter "a" associated with the Kerr metric 
    Sengupta, S (World Scientific Publishers, 1996-06)
    The parameter "a" associated with the Kerr metric has been used to determine the rotationally induced quadrapole electric field outside a rotating massive object with external dipole magnetic field. A comparison of the ...

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