B0329 54 - david-macmahon/wiki_convert_test GitHub Wiki

We are reporting our recent B0329+54 observations conducted using the Leuschner 4m dish. Observations was carried out for 1.3 hours at L-band on 18th May 2017. Following is a summary of these observations. We did not detect the pulsar either due to severe RFI conditions or our data recording/conversion to filter-bank format.

Fig 1 is the bandshape from a total 1.3 hours of B0329+54 data. Fig 2 is after removing both ends of the band containing excessive RFI.

  • Bandpass.png
  • RFI_removed_bandpass.png
  • Folded_profile.png

After folding to topocentric period using the polycos, we did not detect the pulsar. Fig 3 is the PRESTO folded profile. I tried folding using three different pulsar packages, DSPSR, PRESTO and SIGPROC with similar results. So its unlikely that it’s a software bug that we are not seeing our pulsar.

A detailed periodicity search was also conducted to find if pulsar was present using following steps.

  1. Filterbank file was de-disperse with the DM = 26.8 for our pulsar and DM = 0 for RFI. A visual look at the time-series indicated that there are large fluctuations in the Gain/baseline.
  2. All the zero DM periodic features were identified and tagged. I also make sure that there are no features due to pulsar period at zero DM as some low DM strong pulsars could show.
  3. During the periodicity search process, zero DM periodic features were ignored. However, I did not notice any periodic component in the Fourier spectrum matching the pulsar period.
⚠️ **GitHub.com Fallback** ⚠️