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Browsing by Subject "Stellar Magnetic Fields"

Browsing by Subject "Stellar Magnetic Fields"

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  • Calibration on the Sun for stellar magnetic fields 
    Sivaraman, K. R; Bagare, S. P; Gupta, S. S; Kariyappa, R (Springer, 1987-07)
    The intimate association between the surface magnetic fields and the Ca II K-line emission known to exist on the Sun, holds a promise for using this property to detect the presence of global magnetic fields on Sun-like ...
  • Electromagnetic radiation in a helical magnetic field 
    Krishan, V (1984)
    Electromagnetic radiation spectrum is studied in a helical magnetic field since such magnetic field configurations may be present in cosmic objects. It is shown that, by a proper choice of the spatial period of the magnetic ...
  • Longitudinal flows in stellar magnetic flux tubes 
    Gokhale, M. H; Hiremath, K. M (Elsevier, 1986)
    It is shown that if a thin, isolated and untwisted magnetic flux tube, consisting of a current-free core bounded by a thin current sheath, is in an ‘overall’ equilibrium in a stratified atmosphere, then there is, in general, ...
  • Magnetic field induced metal-insulator transition in a one-dimensional chain: application to neutron star atmospheres 
    Chatterjee, S (Kluwer Academic Publishers, 1989-12)
    It is shown that, in the non-interacting limit, a one-dimensional metallic system has a transition to an insulating phase, in presence of external magnetic field H, if mu(B)H is greater than E(B), where mu(B) is the Bohr ...
  • Neutrino emission from supernovae in the presence of magnetic fields 
    Sivaram, C (Kluwer Academic Publishers, 1989)
    Neutrino burst observations from SN1987A indicate that the density and the temperature of the source and the propagation of the neutrinos in the medium are markedly different from those of solar and terrestrial conditions. ...
  • On the intrinsic rotation of magnetic variables 
    Rajamohan, R; Babu, G. S. D (Royal Astronomical Society, 1978-03)
    It is observed that the rotational velocities of most Ap stars are dependent on their masses. Deviations from this general rule may be explained in terms of multiplicity which affects the derived colors and radii. Spectroscopic ...
  • On the slow-down of the millisecond pulsar PSR 1937 + 214 
    Sivaram, C; Kochhar, R. K (Springer, 1984-01)
    There are indications that less than 10/sup-3 of the spin-down energy of the millisecond pulsar PSR 1937+214 emerges as electromagnetic radiation. The implications of this result are discussed. The surface magnetic field ...
  • The secular instability of slightly viscous magnetic Maclaurin spheroids 
    Kochhar, R. K; Sivaram, C (Springer, 1983-10)
    The properties of rotating bodies close to their stability limits are investigated analytically. A homogeneous self-gravitating mass rotating about the 3-axis and having both a small amount of viscosity and a general ...
  • Supernova SN 1987A - Rotation rate of the central pulsar 
    Bhatt, H. C; Datta, B (Royal Astronomical Society, 1989-04)
    Using available observational data on supernova SN 1987A, firm quantitative lower limits on the rotation period of the central pulsar (assuming the pulsar luminosity to power the supernova light curve) are derived. It is ...

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