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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

Asgekar, Ashish and Deshpande, Avinash A (2001) 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. In: Monthly Notices of the Royal Astronomical Society, 326 (4). pp. 1249-1254.

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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 111 MHz. 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 35 MHz. 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.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Blackwell Publishing.
Keywords: radiation mechanisms;non-thermal;pulsars;general;pulsars;individual;B0943+10
Department/Centre: Division of Mechanical Sciences > Chemical Engineering
Date Deposited: 15 Sep 2004
Last Modified: 19 Sep 2010 04:16
URI: http://eprints.iisc.ernet.in/id/eprint/1857

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