1. S5 First Epoch BNS & BBH Inspiral Update
Duncan Brown1, Drew Keppel1, Eirini Messaritaki2
1California Institute of Technology,
2Univeristy of Wisconsin-Milwaukee
LSC Meeting, August 2006
LIGO-G Z

2. Introduction Talk divided into three parts: S5 Online BNS Analysis
S5 First Epoch BNS search
Start of run (11/4/05) to start of LHO commissioning (02/06/06)
Standard Msun 2pN inspiral templates
Full search pipeline (filter, signal based vetoes, coincidence)
S5 First Epoch BBH search
Msun 2pN inspiral templates

3. S5 Online BNS Analysis Runs with latency ~ 20 mins at LHO and LLO
Results displayed in control room via InspiralMon
Glitch Pages
Display top 10 loudest single IFO triggers with SNR > 25
Scimons encouraged to look at glitches with no current DQ explanation
Experts encouraged to create DQ flags for glitches that are “obvious” but are not currently flagged
ASI_CORR_OVERFLOW was created in this way

4. S5 First Epoch BNS Analysis
Distance to optimally oriented 1.4,1.4 solar mass BNS at  = 8
First S5 Epoch
Nov 4,
Feb 6, 2006

5. BNS Parameter Accuracy
Mchirp accuracy: 0.01 Msun
Eta accuracy: 0.1
End time accuracy: 5 ms

6. BNS Accidental Coincidences and Simulated Signals
Tune pipeline using background, playground (10% of data) and injections
Measure background by applying time slides before coincidence
Add simulated signals to detector data to evaluate analysis performance

7. BNS Vetoes Two types of Vetoes are used to eliminate time slides
Data Quality Vetoes (e.g. MASTER_OVERFLOW_LSC, PRE_LOCKLOSS_120_SEC, etc.)
Signal-Based Vetoes (e.g. Chi-squared and R-squared vetoes)
All vetoed injections above coincide with glitches.

8. BNS Coincident Triggers: Veto Hardware Injections
Double coincident H1L1 time slide triggers from double and triple coincident time

9. BNS Coincident Triggers: also use Category 2 & 3 Vetoes
Double coincident H1L1 time slide triggers from double and triple coincident time

10. BNS Coincident Triggers: also use R-square Veto
Double coincident H1L1 time slide triggers from double and triple coincident time

11. Histogram of Luminosity
The galaxy catalog has been extended to 100 Mpc
only complete to 25 Mpc
we are now sensitive to those distances

12. S5 Epoch 1 BNS Plans Finish final tuning of vetoes before opening box
Total time in triple coincident data ~ 0.1 years
The total luminosity ~ 300 L10 = 190 MWEG
R90% ~ 0.08 yr-1 L10-1 = 0.13 yr-1 MWEG-1
But would not quote this number outside this room…
Efficiency computed at threshold, not loudest event (limit will go up)
Error estimates not included (limit will go up)
No consideration of background, etc.
Not reviewed!

13. S5 First Epoch BBH Analysis
Distance to optimally oriented equal mass binaries at  = 8

14. BBH Parameter Accuracy
Mchirp accuracy: 5 Msun
Eta accuracy: 0.15
End time accuracy: 20 ms

15. BBH Chi-squared Veto
Minimal loss in efficiency due to Chi-squared veto for all injection runs
EOB
PadeT1
TaylorT1
TaylorT3

16. BBH: Slides before Chi-squared
Double coincident time slide triggers from HXL1 in triple coincident time

17. BBH: Slides after Chi-squared
Double coincident time slide triggers from HXL1 in triple coincident time

18. BBH Accidental Coincidences and Simulated Signals
Tune pipeline using background, playground (10% of data) and injections
Measure background by applying time slides before coincidence
Add simulated signals to detector data to evaluate analysis performance

19. S5 Epoch 1 BBH Plans Finishing final tuning of vetoes
Finishing looking at missed nearby injections

20. Future for S5
Complete S5 first epoch BNS upper limit (or detection?) for approval at November LSC meeting
Setting up automated code to analyze data for BNS weekly for a detection/no detection statement
BNS final upper limit from 1 yr of S5 data planned to be completed for Feb. 2007

21. The End

22. Efficiency in Triple Coincident Data

23. Efficiency in Triple Coincident Data
These are injections found as
H1H2 double coincidence,
but which have a large
effective distance in LLO
(due to detector misalignment)
Apparent structure
here due to low
number statistics

24. Histogram of Number of Galaxies