Meeting notes

• Observation request should be fully observed. The targets include: Cygnus A, Taurus A, Cygnus Loop and IC443.
• Work resumed on the data reduction pipeline.
  • Phillippe & Lucie will start with Cassiopeia A.
  • At some point there will be a cross check with Sergey's work.
  • After, the pipeline can be used to look at other sources.
• Antoine's intern, Thomas Valour, will start at the end of the month.
• Kim asks about the Bayesian modeling of the line properties.
  • Jonathan and Lucie had done some Bayesian fitting in the past, but not based on gas properties.
  • Kim wants to focus on fitting for the line properties based on the gas properties.
  • Some things that we should explore are:
    • Does it help to fit simultaneously for line intensity and width?
    • Does it help to fit for individual transtitions or stacks?
• Sergey shows some results on Cygnus A.
  • So far only the data below 50 MHz has been prosessed.
  • This is with a channel width of 25 Hz.
  • The stack of all the processed data has an rms of ~2.5e-5 in optical depth units. This can be improved upon by averaging along the spectral axis.
  • Things to look for: higher order carbon transtitions, sulphur recombination lines, new constraints on HRRL optical depth and extragalactic RRLs.
  • Looking for higher order transitions will require using Sergey's 2007 method for separating transitions.
• Antoine shares the observing schedule.
  • He will work setting up the observations.
  • There are 30 hours in December during the night.
  • More observing blocks up to May.
• Antoine et al. will decide if it is necessary to meet next Monday (November 21st) by this Friday.