Present:

Minutes

Ramesh's update

General project updates
- Data acquisition continuing and should be complete this year (estimate 3.9 PB total)
- Nick submitted thesis, working at OzGrav, will be at Curtin occasionally
- Sammy moved to SC1 (long-period transients)
- Ethan completed summer project
- Chris commenced PhD in March
- Chia Min Tan joining group in second-half of 2023
Paper publication updates
- Papers 1 & 2 now published in PASA
  - <links to papers>
- News stories about description papers by SpaceAustralia, shared by MWA, ICRAR, Curtin, and AAL mini-story also released
  - <links to stories>
- Parul's paper of GMRT follow-up of J0026-1955 now submitted to MNRAS (focus on sub-pulse drifting behaviour)
Proposals
- MWA observations okay
- GMRT Cycle 44 for pulsar 5
- Parkes proposal for pulsars 4 and 5
- ASTAC proposal getting in for 2023B compute on OzSTAR

Chris's update

Data acquisition and quality checking
- Observing 19 pointings this semester, moving into the Galactic plan
- Using manual checks of data for quick looks and data quality assurances
  - P11 seems okay, but may need to be re-observed due to large number of flagged tiles
  - P12 was re-observed after network failure, data looks good.
  - P13 /& P14 initial verification okay, need to double check
  - O01 seems okay
  - O02 no detections so far - needs more careful inspection
  - O03 initial verification okay, need to double check
  - O04 okay, but seems to be some data corruption at the bottom of the band
    - Needs more investigation, but likely needs to be rescheduled
  - O05 & O06 being processed now, O07 & O08 being observed imminently
PhD project updates
- CDMT dev. for MWAX data, creating pipeline in progress
- Focus on finding binary pulsars in SMART and beyond

Ryan: Do the test obs S/N match what is expected?
Chris: Yes, they compare well to Mengyao's previous census

Bradley's update

GitHub repository for deep pass planning: https://github.com/CIRA-Pulsars-and-Transients-Group/SMART_deep_planning (private – request access from Bradley)
Trying to get software environment on OzSTAR updated, running into some issues with the beamformer
- Will need to resolve this in order to start some test runs of first-pass search by on 80-min data to see how things scale
- Use this to help prune the second-pass plans to something feasible (i.e., Are there too many DM trials? How is FFA performing? Single-pulse search?)

Ryan: Planning to use current/new OzSTAR?
Bradley: Currently planning on staying with current OzSTAR
Nick: Could use both, since GPUs on both are nVidia
Ramesh: Data base is kind of a road block, ASTAC proposal will be honest and looking for just testing/benchmarking

Garvit's update

PSR #5 follow-up and analysis

Jared's update

Galactic plane monitoring discovery and SMART follow-up
- Image plane transient, bright single pulses in pulsar data follow-up
- Used PINT to get a timing solution from SP toas
- Looking into spectral nature
- Writing up discovery paper, maybe get Parkes follow-up

Garvit: sub-pulse drifting?
Bradley: actually it's just bright pulses occurring on tail of pulse - maybe like GP?
Susmita: maybe green time on Parkes?

Ethan's update

SGAN ML classification for SMART
- Extending previous work from Isaac
- Redesigned the data management within the workflow, made a Docker image with all relevant dependencies
- Some testing but not on real database or supercomputing systems, but containerisation should make it easier
  - Updated to work with the new api for the database
- Still needed to test on Garrawarla or OzSTAR
- Still need to finalise training sets, but looks promising, expect accuracy ~90% or above

Ramesh: Even just 90% accuracy will be a big improvement since we're just using the LOFAR classifier. Still needs some attention though, so will need to see how we can get this to a usable form. Potentially Chia Min can push this to completion.
Ethan: Certainly more detail in report, as well.

Dilpreet's update

Draft ideas for project logo
- Hand drawn draft and digital drafts (Wix? logo design website)
- Contact with ideas via CSIRO email, please. Dilpreet.Kaur@csiro.au

Bradley: Should we also involve the ICRAR T&I team in this? They have expertise in this field and can take Dilpreet's designs and adapt. Tend to like the simpler/crisp designs.
Ramesh: Agree that simple is good. MWA dipole as M is cute. Pulsar lighthouse profile somewhere or even profile is good. Certainly should engage ICRAR T&I for help or ideas.

Pulsar 5 follow-up (Ramesh & Garvit)

uGMRT follow-up in Band 3 and UWL follow-up with Murriyang
- non-detection at the MWA-determined position (good to ~2 arcmin)
- Imaging (Band 3) of visibility data revealed 6 compact sources, in the ~0.5 - 4 mJy range
- pulsar detection in the faintest source (~0.5 mJy), which is D
meanwhile, imaging of the 2nd observation (13May) revealed a brighter source (called G), ~5 mJy at 400 MHz
real-time folding on G (on 20 May) with approx P and DM showed clear detection of the pulsar
dynamic scheduled at both GMRT (and also Parkes, which was co-observing) for multiple scans on G
data are being analysed, the first scan shows bright detection (after a good round of RFI clean)
subsequent scans also analysed, turned into pulse stack, pulsar is seen, though data quality is not the best
- need more RFI cleaning
- also look at the data from other beams

Mengyao: the 2nd bright source in the field; has the source G anything to do with that?

Ramesh: very unlikely, and it is definite that G is the pulsar, given the size of the PA beams (~1-2 arcmin)

Discussion items

Database and web-app now in ADACS/Data Central hands - expect deployment by July (Bradley)
- Not a show-stopper if it drags slightly. We can deploy "anywhere" and simply ingest into the eventual Data Central deployed version
Data release plans and timeline (Ramesh)
Publication policy ideas (Bradley)

MWA Telescope

2023-06-08