LSC-Virgo Burst Analysis Working Group


Burst Group Home
ExtTrig Home
CBC Group Home
LSC, LIGO, Virgo


'How-to' docs
[2008, 2007, earlier]
Talks/Posters [pre-wiki]
Paper plans
White papers


Analysis projects
Old notebook [General, S2, S3, S4, S5]
Virgo workarea
External collabs


Main review page

Review Committee Meeting Monday October 6 2008 08:00 Pacific / 11:00 Eastern

Minutes: Monday October 6 2008 08:00 Pacific / 11:00 Eastern

Agenda and Contact Info


  1. Announcements
  2. Update on status of S5 1st Year Burst Search Paper [ HTML ]
  3. Reports from Burst Review Teams
  4. Discussion of equinox event review document [ PDF ]
  5. Review readiness for S5y2/VSR1 all-sky search with Omega-Pipeline [ HTML ]
  6. Review readiness for S5y2/VSR1 all-sky search with Coherent Waveburst [ HTML ]
  7. Review of BurstMDC Simulation
    • BurstMDC Bulletin Board [ HTML ]
    • BurstMDC code change log [ HTML ]
    • Web interface to code release BurstMDC_S5_v3 (S5 FirstYear) [ HTML ]
    • Web interface to matapps CVS (S5 Second-Year, diffs) [ web ]
  8. A.O.B.

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. Announcements
  2. Update on status of S5 1st Year Burst Search Paper [ HTML ]
    • Update link to CVS.
    • Michele and Neil Cornish working on paper. Two calls per week -- one before burst meeting, one on Friday to plan weekend activities.
    • By Wednesday: (i) Shrunk section on combining ULs. (ii) Getting figures. (iii) Neil making language describing methods more uniform and emphasizing complementarity.
  3. Reports from Burst Review Teams
    • HF team to give update next telecon.
  4. Discussion of equinox event review document [ PDF ]
    • Version of October 3, 2008 reviewed.
    • Not a gold-plated event.
    • Trying to understand the H1-H2 Q-Pipe search.
    • Event ~4x too week to be seen in H1H2 set.
    • Shourov working on H1H2L1V1 set. Not sure why it wasn't above threshold here.
    • Full-band glitchiness around time of equinox event in H1. H1 a factor of 3x higher than background for ~1min around equinox event. Other IFOs are relatively normal.
    • SNR of event is ~13-14 in H1. ~5 in H2. Why not a factor of 2. Should find out ratio of sensitivities of two interferometers.
    • V3 h(t) was used. No DC corrections taken into account. 4% for L1, 6-7% for Hanford -- but they go the same way, so probably only a 1% difference.
    • No vetoes coincident with event; no Cat3 either. Nothing important seen in Q-scans.
    • Background from online, cWB search. Prob of getting background louder than equinox is 2% before Cat3, 1% after Cat3. 1/26yr or 1/43yr. Use before-Cat3 for "detection set". Conservatively take the before-Cat3 case.
    • Currently only looking at significance for one of the ETGs (cWB), only in the low-frequency portion of search. Only from H1H2L1 livetime set. Trials factor for frequency (at least). Possibly for different detector combinations; different ETGs; etc. H1H2L1V1 had similar significance. Less livetime so a bit worse estimate of significance.
    • Detection checklist: mostly complete, incomplete items are not too critical.
    • Erik: living document -- thinks it is OK to go to the Detection Committee. Patrick: would like to know what the significance of residual null energy is. (Apparently Shourov computed the probability of proximity with a weak glitch and it is ~1/100.) Patrick will work with Lindy on defining extra check. Rafaelle: still thinks that we should complete document before going forward to Detection Committee.
    • Take this up next week again.
$Id: minutes-2008-10-06.html,v 1.3 2008/10/07 14:00:03 jolien Exp $