S5 First EpochBNS Inspiral Results

Drew Keppel1

representing the Inspiral Group

1California Institute of Technology

Nov LSC MeetingMIT, 4 November 2006LIGO-G060556-00-Z

Summary

• Start of run (11/4/05) to start of LHO commissioning (02/06/06)

• Standard 1 - 3 M 2pN inspiral templates

• Search pipeline (filter, vetoes, coincidence)• Full Data Results

» No detection

• Upper Limit» 0.17 L10

-1 yr-1 for 1.35 M

» Mass dependent

• Future plans

S5 First Epoch BNS Analysis

Distance to optimally oriented 1.4,1.4 M BNS at = 8

First S5 EpochNov 4, 2005 -Feb 6, 2006

current target

sensitivity shown in sensemon

2k

4k

Parameter Accuracyof recovered software injections

• Mchirp accuracy: 0.01 M sun• End time accuracy: 5 ms

Accidental Coincidencesand 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

Vetoes

• Two types of Vetoes are used to eliminate false triggers» Data Quality Vetoes» Signal-Based Vetoes

2 waveform consistency test 2 time above threshold veto

• All vetoed injections above coincide with glitches.

• Data Quality Vetoes: categorized» Cat. 1

– Data not analyzed– H1:H2_OUT_OF_LOCK

» Cat. 2 & 3– Triggers discarded– MASTER_OVERFLOW_LSC– PRE_LOCKLOSS_120_SEC

H1H2 Amplitude Consistency

• Effective Distance Cut» For triggers with both H1 and H2 triggers

• Consistency Cut» For triggers with one Hanford trigger when both were in science mode

H1H2 Effective Distance Cut

Efficiency Curve

• 50% efficiency at 25 Mpc

Population Model

• The galaxy catalog has been extended to 100 Mpc» only complete to 25 Mpc» we are now sensitive to

those distances» The upper limit has used a

catalog extended to 75 Mpc

S5 Epoch 1 Full Data

Signal with SNR 8 in H1 and L1 detectors would appear here

•All triggers consistent with background

Upper Limit

• Gaussian Mass Distribution» centered around 1.35 M

» Luminosity for H1H2L1 times: 177 L10

» Upper Limit: 0.17 L10-1 yr-1

• Uniform Mass Distribution» Luminosity for H1H2L1 times:

– 2-3 M: 155 L10

– 3-4 M: 294 L10

– 4-5 M: 499 L10

– 5-6 M: 1077 L10

• 1 MWEG = 1.7 L10,B

» Switched to L10’s because of error in MWEG

Mass DependentUpper Limit

Total Mass M

Rate L10-1 yr-1

S2

S3/S40.190.11

0.060.03

Future for S5 BNS

• Follow up of loudest events in First Epoch• Adding Coherent Code to Pipeline

• Post-Newtonian search from 2 to ~30 Total M from 1 calendar year of S5 data» Goal is a result presented at March LSC Meeting 2007

The End