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Title: The topology and polarization of sub-beams associated with the `drifting' sub-pulse emission of pulsar B0943+10 - II. Analysis of Gauribidanur 35-MHz observations
Authors: Asgekar, Ashish
Deshpande, A.A.
Keywords: radiation mechanisms: non-thermal
pulsars: general
pulsars: individual: B0943+10
Issue Date: Oct-2001
Publisher: Royal Astronomical Society
Citation: Monthly Notices of the Royal Astronomical Society, 2001, Vol.326, p1249-1254
Abstract: In the previous paper of this series, Deshpande & Rankin reported results regarding the sub-pulse drift phenomenon in pulsar B0943+10 at 430 and 111MHz. This study has led to the identification of a stable system of sub-beams circulating around the magnetic axis of this star. Here, we present a single-pulse analysis of our observations of this pulsar at 35MHz. The fluctuation properties seen at this low frequency, as well as our independent estimates of the number of sub-beams required and their circulation time, agree remarkably well with the reported behaviour at higher frequencies. We use the `cartographic' transform mapping technique developed by Deshpande & Rankin in Paper I to study the emission pattern in the polar region of this pulsar. The significance of our results in the context of radio emission mechanisms is also discussed.
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ISSN: 0035-8711
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Copyright: (2001) Blackwell Publishing for the Royal Astronomical Society
Appears in Collections:Research Papers (A&A)

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