Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-10-05
Mon.Not.Roy.Astron.Soc. 326 (2001) 1249
Astronomy and Astrophysics
Astrophysics
6 pages, 7 figures (2 color figs), MNRAS, 326 (4), 1249-1254 (2001)
Scientific paper
In the previous paper of this series Deshpande & Rankin (2001) reported results regarding subpulse-drift phenomenon in pulsar B0943+10 at 430 MHz and 111 MHz. This study has led to the identification of a stable system of subbeams 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 subbeams required and their circulation time, agree remarkably well with the reported behavior at higher frequencies. We use the `cartographic'-transform mapping technique developed 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.
Asgekar Ashish
Deshpande Akshay
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