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Propagation of electrons emitting weak type III bursts in coronal streamers

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Abstract

We report the observations of weak type III bursts at 73.8, 57.5, 50.0, and 38.5 MHz from Clark Lake Radio Observatory on four days and discuss their characteristics. In addition to Clark Lake data, the magnetogram and sunspot/active region data and the coronal streamer data obtained by HAO's Coronagraph/Polarimeter aboard SMM satellite are used to study the location of the burst sources with respect to the coronal streamers emanating from active regions. It is shown that the bursts occur within or close to the edge of dense coronal streamers implying that the coronal streamers contain open magnetic field lines along which the electrons generating the bursts propagate. The positional analysis of the bursts is used to estimate the variation of coronal electron density with radial distance.

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Authors and Affiliations

  1. Astronomy Program, University of Maryland, 20742, College Park, MD, USA

    N. Gopalswamy, M. R. Kundu & A. Szabo

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  1. N. Gopalswamy
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  2. M. R. Kundu
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  3. A. Szabo
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On leave from the Indian Institute of Astrophysics, Kodaikanal, India.

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Gopalswamy, N., Kundu, M.R. & Szabo, A. Propagation of electrons emitting weak type III bursts in coronal streamers. Sol Phys 108, 333–345 (1987). https://doi.org/10.1007/BF00214168

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  • DOI: https://doi.org/10.1007/BF00214168

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