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)

- OK 6.116941625190631 [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 9.318785751094715, mean 5.233802090351301, median 5.029877475579877

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 7.71748532e-41 7.71748532e-41 8.45230844e-54] [2.10000000e-05 5.48584269e-41 5.48584269e-41 7.52449171e-54] [2.20000000e-05 3.96262828e-41 3.96262828e-41 6.82098233e-54] ... [9.99998000e-01 2.73617388e-36 2.73617388e-36 5.73895037e-36] [9.99999000e-01 2.73619429e-36 2.73619429e-36 5.73933494e-36] [1.00000000e+00 2.73621460e-36 2.73621460e-36 5.73971931e-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)

Download

Generated BBH sources

SNR of the generated sources