S.Klimenko, December 2003, GWDAW Performance of the WaveBurst algorithm on LIGO S2 playground data...
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![Page 1: S.Klimenko, December 2003, GWDAW Performance of the WaveBurst algorithm on LIGO S2 playground data S.Klimenko (UF), I.Yakushin (LLO), G.Mitselmakher (UF),](https://reader036.fdocuments.net/reader036/viewer/2022082417/56649f225503460f94c3a122/html5/thumbnails/1.jpg)
S.Klimenko, December 2003, GWDAW
Performance of the WaveBurst algorithm on LIGO S2 playground data
S.Klimenko (UF), I.Yakushin (LLO),
G.Mitselmakher (UF), M.Rakhmanov(UF)
for LIGO collaboration
Introduction Trigger production Triple coincidence Simulation
sine-Gaussian BH-BH mergers
Summary
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S.Klimenko, December 2003, GWDAW
Introduction WaveBurst (see S.Klimenko’s talk for details, GWDAW, December 20,
2003)
excess power detection method in wavelet domain
flexible tiling of the TF-plane by using wavelet packetsvariety of basis waveforms for burst approximation local in time & frequency, low spectral leakage
use rank statistics non-parametric use local T-F coincidence rules for multiple IFOs
coincidence applied before triggers are produced works better for 2 and more interferometers
(but can do analysis with one interferometer as well)
Symlet 58Symlet 58 packet (4,7)
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S.Klimenko, December 2003, GWDAW
Wavelet time-scale(frequency) spectrogram
H2:LSC-AS_QLIGO data
WaveBurst allows different tiling schemes includinglinear and dyadic wavelet scale resolution.
currently linear scale resolution is used (f=const)
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S.Klimenko, December 2003, GWDAW
WaveBurst pipeline
wavelet transform,data conditioning,
rank statistics
channel 1
IFO1 event generation
bp
wavelet transform,data conditioning
rank statistics
channel 2,…
IFO2 event generation
bp“coincidenc
e”
sec128/164 Hztf band 64-4096 Hz
selection cuts: coincidence likelihood L>1.5, cluster likelihood L>4
bp selection of black pixels (10% loudest)
coincidenceTF1
TF2
i iPL log
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S.Klimenko, December 2003, GWDAW
Raw Coincidence Rates
expect reduce background down to <10 Hz using final selection cuts: r-statistics, event confidence, veto, …
ifo pair L1-H1 H1-H2 H2-L1
triggers
29346 22469 36956
lock,sec
94652 98517 93699
rate, Hz
0.31 0.23 0.39
double coincidence samples (S2 playground)
raw triple coincidence rates
triple coincidence:time window: 20 msfrequency gap: 0 Hz 1.10 0.04 mHz
off-time samplesare produced duringthe production stageindependent on GW
samples
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S.Klimenko, December 2003, GWDAW
“BH-BH merger” band
raw triple coincidence rates
off-time triple coincidence sample
expect BH-BH mergers(masses >10 Mo)
in frequency band < 1 kHz
(BH-BH band)
S2 playground
background of 0.15 0.02 mHz
expect < 1 Hzafter final cuts
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S.Klimenko, December 2003, GWDAW
Simulation
hardware injections software injection into all three
interferometers: waveform name GPS time of injection , , - source location and polarization angle T {L1,H1,H2} - LLO-LHO delays F+{L1,H1,H2} - + polarization beam pattern vector Fx {L1,H1,H2} - x polarization beam pattern vector
use exactly the same pipeline for processing of GW and simulation triggers.
sine-Gaussian injections 16 waveforms: 8-Q9 and 8-Q3 F+ {1,1,1} , Fx {0,0,0}
BH-BH mergers (10-100 Mo) 10 pairs of Lazarus waveforms {h+,hx} all sky uniform distribution with calculation {F+,Fx} for
LLO,LHO
–durationf0-central frequency
02 fQ
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S.Klimenko, December 2003, GWDAW
hardware injections
SG injections [ 100Hz, 153Hz , 235Hz, 361Hz, 554Hz, 850Hz, 1304Hz 2000Hz ]
good agreement between injected and reconstructed hrssgood time and frequency resolution H1H2 pair
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S.Klimenko, December 2003, GWDAW
detection efficiency vs hrss
fo, Hz 100 153 235 361 554 850 1034 2000
h50%, Q9 40. 20. 4.8 7.5 7.2 - 16. -h50% , Q3 36. 14. 6.0 6.6 8.6 10. 17. 30.
x10-21
x10-21
hrss(50%)
@235 Hzrobust
with respectto waveform
Q
Hzstrain21105~
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S.Klimenko, December 2003, GWDAW
timing resolution
time window >= 20 ms negligible loss of simulated events (< 1%)
S2 playground simulation sample
T=4ms
12% loss
1% loss
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S.Klimenko, December 2003, GWDAW
Signal reconstructionre
const
ruct
ed log1
0(h
rss)
mean amplitude frequency
Use orthogonal wavelet (energy conserved) and calibration.
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S.Klimenko, December 2003, GWDAW
BH-BH merger injections
BH-BH mergers (Flanagan, Hughes: gr-qc/9701039v2
1997)
duration :
start frequency :
bandwidth:
Lazarus waveforms (J.Baker et al, astro-ph/0202469v1) (J.Baker et al, astro-ph/0305287v1)
MM
MstartoHzf 2002.0 205
MM
MqnroHzff 2013.0 1300~
oM
MmsM 20550
all sky simulation usingtwo polarizations and
L & H beam pattern functions
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S.Klimenko, December 2003, GWDAW
Lazarus waveforms: efficiency
mass, Mo 10 20 30 40 50 60 70 80 100
hrss(50%) x 10-20 4.5 2.4 2.0 1.8 1.5 1.7 2.2 3.4 7.1
all sky search:hrss(50%)
Hzstrain 102~ 20
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S.Klimenko, December 2003, GWDAW
Lazarus waveforms: frequency vs mass
expected BH-BH frequency band – 100-1000 Hz
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S.Klimenko, December 2003, GWDAW
Summary
analysis pipeline is fully operational (production, post-production, simulation).
robust detection of SG waveforms with different Q
pipeline sensitivity (no data conditioning yet)
(5-20) . 10-21 - optimal detection (SG waveforms). ~2 . 10-20 - all sky BBH merger search (Lazarus
waveforms)
plan efficiency study using EOB & ABFH merger waveforms
background: raw triple coincidence rates full band (4kHz): ~1 mHz “BH-BH band” (<1kHz): ~0.15 mHz
after all selection cuts expect <1 Hz background rate for full S2 data set