Ability to detect GW150914-like events using optimal sky position [4.5 yr]
FoM
Science investigation and Observational requirement: SI4.1 OR4.1 from Science requirement document.
Compute probability of detecting GW150914-like events with SNR>7 (optimally oriented on the sky)
- GREAT 52.785374863203714 [1 5 10] : Probability to detect
Detectability OK if SNR>=7 for 4.5 years of observation
Summary
We have assumed 4.5 years of observation with 0.82 duty cycle and SNR threshold: 7
We have conducted monte-carlo with 10000 trials using LIGO posterior distribution IMRPhenomPv2_posterior and random angles and positions (except inclination for which we use LISA posterior distribution), assuming a time to coalescence of 10 years.
4.5: best 13.147233389586042, mean 7.383913077867555, median 7.096081423343125
Detailed results
waveform_params
'''
- minf : 2e-05
- maxf : 1
- fend : None
- tmin : None
- tmax : 4.5
- phiref : 0.0
- fref_for_phiref : None
- toffset : 0.0
- TDI : TDI2AET
- acc : 0.0001
- order_fresnel_stencil : 0
- approximant : IMRPhenomD
- responseapprox : full
- frozenLISA : False
- TDIrescaled : False
- LISAconst : {'OrbitOmega': 1.9909865927683783e-07, 'OrbitPhi0': 0.0, 'Orbitt0': 0.0, 'OrbitR': 149597870700.0, 'OrbitL': 2500000000.0}
- LISAnoise : [[2.00000000e-05 3.74868279e-45 3.74868279e-45 1.45384261e-55] [2.10000000e-05 3.51079457e-45 3.51079457e-45 1.76691006e-55] [2.20000000e-05 3.31246021e-45 3.31246021e-45 2.12793518e-55] ... [9.99998000e-01 1.35664204e-36 1.35664204e-36 2.82767611e-36] [9.99999000e-01 1.35666152e-36 1.35666152e-36 2.82788487e-36] [1.00000000e+00 1.35668095e-36 1.35668095e-36 2.82809354e-36]] '''
source_params
'''
- m1 : 38.55857888171136
- m2 : 33.29171907852824
- chi1 : 0.10517526479580235
- chi2 : -0.18235419183677876
- dist : 504.36172329758585
- inc : 3.065199532811077
- ra : 1.193462325823016
- dec : -1.1889876836782203
- phi : 0.0
- lambda : 3.59431527654009
- beta : 0.370951177013308
- psi : 5.361808256845137
- tc : 10
- fstart : 0.011444809853850194
- dist0 : 456.71896533943345 '''
Input parameters
- log : log/SO4_detectability_sbbh.GW150914.log
- config : config.yml
- subconfig :
- duration : 4.5 yr
- duty_cycle : 0.82
- armlength : 2500000000.0 m
- noise : SciRDv1_redbook/noise_background_4.5_yr.npy
- show : False
- fast : 0
- tdi2 : 1
- freqs : [2e-05, 1]
- force_duration : 4.5_yr
- h5file : SO4/data/GW150914_GWTC-1.hdf5
- report : SciRDv1_redbook/report_SO4_detectability_sbbh.GW150914.md
- fom_config : SO4/detectability_sbbh.GW150914.yml
- random_seed : 9137
- fom_sky_range : [100, 10, 1]
- fom_tc_range : [100, 10, 1]
- fom_snr_range : [1, 5, 10]
- tc : 10
- snr_thresh : 7
- fom_or : SI4.1 OR4.1
- fom_title : Ability to detect GW150914-like events using optimal sky position
- fom_objective : compute SNR
- nproc : 24
- fom_obj : Compute probability of detecting GW150914-like events with SNR>7 (optimally oriented on the sky)