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Review Committee Meeting Monday 23 April 2007 12:00 Pacific / 15:00 Eastern

Minutes: Monday 23 April 2007 12:00 Pacific / 15:00 Eastern

Agenda and Contact Info


  1. Report on GRB070201 search
  2. Continued discussion of S3 AURIGA-LIGO search
    • Paper Draft [ PDF ]
    • Search Summary [ HTML ]
    • Technical Documentation [ HTML ]

Contact Info

InterCall telecon service:
   Phone: 1-866-380-5536, participant code: 435 672 9587 #
   International callers ++1-816-249-4731 with same code
   International access numbers (~10 cents/min surcharge for LIGO Lab):
      Paris 017 080 7156 ;
      Lyon 042 603 0036 ;
      Germany toll-free 0800 182 1591 ;
      Berlin 030 726 167 371 ;
      Rome 00645 217 080 ;
      UK toll-free 0808 234 7914 ;
      London 0203 107 0293
   Handy participant command:  Press *6 ["*M"] to mute, #6 to unmute


  1. Report on GRB070201 search
    • Draft paper is being prepared. Text will be similar to the text in Isabel's GRB paper. Draft expected later this week.
    • Also looking at data with a variety of burst search methods to show robustness of result. Inspiral injection frames for 1.4-1.4 and 1.4-10 Msun with random inclination and polarization generated with lalapps code. Typical 90% sensitivity out to 2.7 Mpc / 8 Mpc with X-pipeline. Still need to do this with Isabel's code.
    • Question about H1 calibration. Need to wait for V3 calibration, which is being generated.
    • Need a webpage with links to all the work on this project.
    • Need a wish-list of material for review.
  2. Continued discussion of S3 AURIGA-LIGO search
    • Discussion of back-of-the-envelope calcuation of search sensitivity.
      • Figs. 12 and 13 on pages 26 and 27 of the technical report show the AURIGA-only efficiencies (before CorrPower).
      • Fig. 2 on page 5 of the white paper T040202 shows the AURIGA SNR=1 optimal oriented sensitivity. This agrees well with the back-of-the-envelope calculation, but there is signficant variability. Perhaps this is the reason for the difference between predicted and observed efficiencies.
      • If CorrPower does cut some triggers, it will be necessary to comment on calibration uncertainties related to this part of the pipeline. Probably this can be assessed simply by estimating the change to the effective threshold of the Gamma-cuts on Fig. 22 of page 39 on the techical report.
      • Ringdown efficiencies: there are indications that these should be *better*, not worse than sine-Gaussians. Patrick will check the MDC frames to make sure that they are correct and that the hrss is right (make sure that these were done with tau/10 rather than 10tau before t=0).
    • List of next todo items: (i) uncertainty analysis, (ii) checks of post-processing scripts including live-time calculations and generation of figures from trigger lists. Laura will gather scripts together in CVS and do a first round of checks.
  3. No meeting next week.
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