Detection of Two Vela Pulsar 'Glitches'
The initial February 2019 detection of a 'glitch' in the Vela pulsar in HawkRAO observation data is the first by an amateur for any pulsar.
This was followed up about 2.5 years later by the detection of second glitch.
Glitch #1: After 20 months of daily observations, on the 1st February, 2019, the HawkRAO system detected a 'glitch' in the Vela Pulsar.
ATel #12466: Notification of 2019 Vela Glitch on 'Astronomers Telegram'
On the 1st February 2019 at 14:09 (UTC) Vela 'glitched' (refer to ATel #12466 graphic above and original link below).
The glitch (~ 2.5 ppm jump) was clearly seen in HawkRAO data in the MJD 58516 observation as shown by the jump in the spin frequency trace (light blue line) in the archived 'Glitch Monitor Panel' on the right.
This is the first time that a glitch has been recorded and notified by an amateur radio astronomy observatory - in any pulsar.
Glitch #2: A second Vela glitch has been detected in HawkRAO observation data (23rd July, 2021 UTC).
ATel #14808: 2021 Vela Glitch seen in HawkRAO Data on 'Astronomers Telegram'
Observations have continued - but using a different analysis chain based on Ubuntu Mate running on a Raspberry PI 400.