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Browsing by Subject "Stars: Magnetic Fields"

Browsing by Subject "Stars: Magnetic Fields"

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  • Convective Intensification of Magnetic Flux Tubes in Stellar Photospheres 
    Rajaguru, S. P; Kurucz, R. L; Hasan, S. S (The American Astronomical Society, 2002-02)
    The convective collapse of thin magnetic flux tubes in the photospheres of Sun-like stars is investigated using realistic models of the superadiabatic upper convection zone layers of these stars. The strengths of convectively ...
  • Joule Heating in Neutron Stars under Strong Gravitation 
    Sengupta, S (The American Astronomical Society, 2000-11)
    Considering Joule heating caused by the dissipation of the magnetic field in the neutron star crust to be an efficient mechanism in maintaining a relatively high surface temperature in very old neutron stars, the role of ...
  • Magnetic activity in the photosphere of CoRoT-Exo-2a. Active longitudes and short-term spot cycle in a young Sun-like star 
    Lanza, A. F; Pagano, I; Leto, G; Messina, S; Aigrain, S; Alonso, R; Auvergne, M; Baglin, A; Barge, P; Bonomo, A. S; Boumier, P; Collier Cameron, A; Comparato, M; Cutispoto, G; de Medeiros, J. R; Foing, B; Kaiser, A; Moutou, C; Parihar, P. S; Silva-Valio, A; Weiss, W. W (EDP Sciences, 2009-01)
    Context: The space experiment CoRoT has recently detected transits by a hot Jupiter across the disc of an active G7V star (CoRoT-Exo-2a) that can be considered as a good proxy for the Sun at an age of approximately 0.5 ...
  • Understanding the Radio Emission Geometry of Multiple-Component Radio Pulsars from Retardation and Aberration Effects 
    Gupta, Y; Gangadhara, R. T (The American Astronomical Society, 2003-02)
    We have conducted a detailed analysis of the emission geometry of a handful of radio pulsars that have prominent, multiple-component profiles at meter wavelengths. From careful determination of the total number of emission ...
  • Understanding the Radio Emission Geometry of PSR B0329+54 
    Gangadhara, R. T; Gupta, Y (American Astronomical Society, 2001-07)
    We have analyzed high-quality single-pulse data of PSR B0329+54 at 325 and 606 MHz to study the structure of the emission beam. Using the ``window-threshold technique,'' which is suitable for detecting weak emission ...

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