|Kerr et al. (2014) studied the emission
from PSR J1717-4054 over intervals from single pulses to years using the
Parkes radio telescope and the Australia Telescope Compact Array (ATCA).
They identified and characterized nulling at three discrete time-scales:
the pulsar emits during `active states' separated by nulls lasting many
thousands of rotations, while active states themselves are interrupted by
nulls with a bimodal distribution of durations - one to two rotations, or
tens of rotations. - The image shows a typical "waterfall" plot with the
pulsar in its ON & OFF states over the two days of observations. Both the
long nulls and short nulls are clearly visible, as well as the extreme
randomness in distribution of OFF times. |
Science Highlights from refereed publications during 2014.