Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-03-10
Mon.Not.Roy.Astron.Soc.377:1383-1392,2007
Astronomy and Astrophysics
Astrophysics
11 pages, 8 figures, accepted by MNRAS
Scientific paper
10.1111/j.1365-2966.2007.11703.x
With its relatively long observation time per pointing, the Parkes multibeam survey was effective in detecting nulling pulsars. We have made 2-hour 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 s 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% with the largest having a lower limit of 95%. 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.
Johnston Scott
Manchester Richard N.
Wang Ning
No associations
LandOfFree
Pulsar Nulling and Mode Changing does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Pulsar Nulling and Mode Changing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulsar Nulling and Mode Changing will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-290226