S5 BNS Inspiral Update

Duncan BrownCaltech

LIGO-G060265-00-Z

Introduction

• Talk divided into two parts:

• S5 Online Analysis» Runs all the time at LHO and LLO

» Single detector search, only generates trigger SNR

» Displayed by InspiralMon and daily glitch pages

• S5 First Epoch BNS search» Start of run (11/4/05) to start of LHO commissioning (02/06/06)

» Standard 1 - 3 Msun 2pN inspiral templates

» Full search pipeline (filter, signal based vetoes, coincidence)

S5 Online Analysis

• Runs with latency ~ 20 mins at LHO and LLO• Results displayed in control room via InspiralMon

• Not much to say…• Other than the occasional brief downtime, this has been running well

S5 BNS Glitch Pages

• Display top 10 loudest single IFO triggers with SNR > 25

Triggers with noknown DQ flag

Triggers withknown DQ flag

S5 BNS Glitch Pages

• Scimons encouraged to look at glitches with no current DQ explanation» Glitch group have been working with these triggers

• Experts encouraged to create DQ flags for glitches that are “obvious” but are not currently flagged

• To do:» Time cluster triggers with 10 sec window (real soon now!)

» Random sampling of triggers in SNR range 6 - 25 for scimons and glitch group to follow up

S5 Hardware Injection Analysis

• Script that looks at hardware injections using online triggers (Fairhurst)

Currently run by hand. Plan is to automate generation

and add to scimon checklist

S5 First Epoch Analysis

Distance to optimally oriented 1.4,1.4 solar mass BNS at = 8

First S5 EpochNov 4, 2005 -Feb 6, 2006

S5 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

Efficiency in Triple Coincident Data

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 structurehere due to low number statistics

Histogram of Number of Galaxies

Histogram of Number of Galaxies

Current galaxy catalogruns out at 25 Mpc:

This should keep going up(needs to be fixed for S5)

Ball Park of S5 Epoch 1 Result

• Doing final tuning of vetoes before opening box» Group has been busy closing out S3/4 analyses…

• 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…» Galaxy distribution incomplete (limit will go down)

» Efficiency computed at threshold, not loudest event (limit will go up)

» No consideration of background, errors, etc.

» Not reviewed!

Future for S5 BNS

• Complete S5 first epoch upper limit (or detection?) for approval at August LSC meeting

• At August LSC meeting we will have S5 second epoch (end of LHO commissioning to start of LLO commissioning) in same state first epoch is now

• Setting up automated code to analyze data for BNS weekly for a detection/no detection statement

• Detection or final upper limit at end of S5…?