The pulsar PSR J1926-0652 was recently discovered with the
Five-hundred-meter Aperture Spherical radio Telescope (FAST) in China.
Using sensitive single-pulse detections from FAST and long-term timing
observations from the Parkes 64-m radio telescope,
Zhang et al. have probed phenomena
on both long and short time scales. The sensitive FAST telescope
enabled individual pulses to be studied in detail. The pulsar is found
to exhibit at least four profile
components, short-term nulling lasting from 4 to 450 pulses, complex
subpulse drifting behaviours and intermittency on scales of tens of
minutes. These observed
complexities pose challenges for the classic carousel-type pulsar models.
The image above is a pulse stack with the single uncalibrated polarization
channel averaged across the FAST observing band from 270 to 800 MHz. The
six active intervals are indicated as bursts. The left-hand-side panel shows
the average pulse
profile obtained from these pulses with the four pulse components indicated.