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Title: Single-pulse analysis of PSR B1133+16 at 8.35 GHz and carousel circulation time
Authors: Honnappa, Sneha
Lewandowski, Wojciech
Kijak, Jaroslaw
Deshpande, A.A.
Gil, Janusz
Maron, Olaf
Jessner, Axel
Keywords: Pulsars
individual: B1133+16
Issue Date: 2012
Publisher: Wiley
Citation: Monthly Notices of the Royal Astronomical Society, 2012, Vol.421, p1996
Abstract: A successful attempt has been made to analyse about 6000 single pulses of PSR B1133+16 obtained with the 100-m Effelsberg radio telescope. The high-resolution (60 μs) data were taken at a frequency of 8.35 GHz with a bandwidth of 1.1 GHz. In order to examine the pulse-to-pulse intensity modulations, we performed both longitude- and harmonic-resolved fluctuation spectral analysis. We identified the low-frequency feature associated with an amplitude modulation at , which can be interpreted as the circulation time P4≃ 30 P1 of the underlying subbeam carousel model. Despite the erratic nature of this pulsar, we also found evidence of periodic pseudo-nulls with P4= 28.44 P1. This is exactly the value at which Herfindal & Rankin found periodic pseudo-nulls in their 327 MHz data. We thus believe that this is the actual carousel circulation time in PSR B1133+16, particularly during orderly circulation.
Description: Restricted Access
ISSN: 0035-8711
1365-2966 (Online)
Alternative Location: 10.1111/j.1365-2966.2012.20424.x
Copyright: 2012 Royal Astronomical Society
Appears in Collections:Research Papers (A&A)

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