Pulsar nulling and mode changing

By N. Wang, R. Manchester, S. Observatory, Naoc, China, Australia Telescope National Facility, Csiro, Australia., S. O. Physics, U. Sydney. 2007

236 citations recorded by the source corpus.

With its relatively long observation time per pointing, the Parkes multibeam survey was effective in detecting nulling pulsars. We have made 2-h observations of 23 pulsars which showed evidence for pulse nulling or mode changing in the survey data. Because of the low flux density of these pulsars, in most cases averaging times of between 10 and 60 s were necessary and so this analysis is insensitive to very short nulls. Seven of the pulsars had null fractions of more than 40 per cent with the largest having a lower limit of 95 per cent. Mode changes were observed in six pulsars with clear relationships between nulling and mode changing in some cases. Combined with earlier results, the data suggest that large null fractions are more related to large characteristic age than to long pulse period. The observations suggest that nulling and mode changing are different manifestations of the same phenomenon.

Subfields: Astronomy and Astrophysics, Oceanography, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/30b3e095af22ad7198f6c3e183f296e309e5b42f

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In Astronomy and Astrophysics

1. A. Spitkovsky
2. Simon Johnston
3. Jason G. Li
4. A. Tchekhovskoy
5. F. Camilo
6. C. Espinoza
7. Ingrid Stairs
8. Andrew G. Lyne

In Oceanography

1. C. Espinoza
2. Simon Johnston
3. P. Weltevrede
4. Cees G. Bassa
5. A. Spitkovsky
6. Jason W. T. Hessels
7. B. W. Stappers
8. Andrew G. Lyne

In Statistical and Nonlinear Physics

1. A. Spitkovsky
2. Andrew G. Lyne
3. A. Tchekhovskoy
4. F. Antonini
5. Michela Mapelli
6. P. Lasky

Citations in the corpus

• RESISTIVE SOLUTIONS FOR PULSAR MAGNETOSPHERES (2011, background): “Intermittent pulsars offer a unique test bed of pulsar theory (e.g., PSR B1931+24, Kramer et al. 2006, and PSR J1832+0029, Lyne 2009; see also Wang et al. 2007, Zhang et al. 2007, and Timokhin 2010).”
• THE REPEATING FAST RADIO BURST FRB 121102: MULTI-WAVELENGTH OBSERVATIONS AND ADDITIONAL BURSTS (2016, background): “The nulling fractions of these pulsars can be quite high, the most extreme emitting pulses <5% of the time (Wang et al. 2007).”
• Further searches for Rotating Radio Transients in the Parkes Multi-beam Pulsar Survey (2009, background): “In studies of 23 nulling pulsars detected in the PMPS Wang et al. (2007) observed nulling fractions from as low as 1% to as high as 93%.”
• The glitch-induced identity changes of PSR J1119−6127 (2010, background): “The nulls of some pulsars are very short (a period or less), while others are only switched on for a few percent of the time (e.g. Wang et al. 2007).”