The character of pulse delays during radio bursts in the pulsar B0943+10

Results of a new series of observations of the anomalous pulsar B0943+10 carried out on the Large Scanning Antenna and DKR-1000 radio telescope of the Pushchino Radio Astronomy Observatory at 112 and 62 MHz, respectively, are presented. Several hundred pulse-arrival times (PATs) obtained on various...

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Bibliographic Details
Published in:Astronomy reports 2017-05, Vol.61 (5), p.428-439
Main Authors: Suleymanova, S. A., Pugachev, V. D.
Format: Article
Language:English
Subjects:
Antennas
Astronomy
Delay
Emission analysis
Emissions
Fragments
Observations and Techniques
Physics
Physics and Astronomy
Pulsars
Radio astronomy
Radio bursts
Radio telescopes
Relaxation time
Scattering
Solar radio bursts
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Summary:Results of a new series of observations of the anomalous pulsar B0943+10 carried out on the Large Scanning Antenna and DKR-1000 radio telescope of the Pushchino Radio Astronomy Observatory at 112 and 62 MHz, respectively, are presented. Several hundred pulse-arrival times (PATs) obtained on various days in 2013–2016 that correspond to the burst (B) mode emission are analyzed. A method for establishing the many-hour pulse shift in the emission window from 3.5-minute fragments is proposed. The delay of the mean pulse relative to the pre-calculated value follows an exponential law with a relaxation time of about 47 minutes. The pulse delay grows by 6 ms during the five hours following the onset of a burst. The random scatter of the residual PAT deviations is comparable to the amplitude of the systematic variations in these times over the lifetime of the B mode. These observations show that the character of the pulse delay as a function of time is the same at 112 and 62 MHz.
ISSN:1063-7729
1562-6881
DOI:10.1134/S1063772917050080