Spectral shape of cosmological stochastic background [4.5 yr]
FoM
Science investigation and Observational requirement: SI 7.2b from Science requirement document.
Detectability of cosmo SGWB
- OK 1 [0.5 0.9 None] : Cosmological background detectability
FoM is green if: - signal is detected in at least 2 bins - snr is above 60 in one of them - relative error on amplitude is below 10%
Summary
The SNR for the extragalactic signal is 46.88724024021319
| names | mean | error |
|---|---|---|
| log_amplitude_1 | -1117114.888217 | 3.089796e+06 |
| tilt_1 | -71.703446 | 8.635138e+02 |
| log_amplitude_2 | -1992940.674176 | 5.514850e+06 |
| tilt_2 | 136.441965 | 1.733362e+03 |
| log_amplitude_3 | -10.313993 | 7.243739e-03 |
| tilt_3 | -1.714007 | 3.131987e-02 |
| log_amplitude_4 | -14.678808 | 2.110203e-01 |
| tilt_4 | -3.278066 | 1.899688e-01 |
| log_amplitude_5 | -5610657.348058 | 1.554715e+07 |
| tilt_5 | 95.993372 | 5.252912e+02 |
| numerical_noise | 1.000056 | 3.650021e-05 |
| log_galactic | -8.004458 | 2.985043e-03 |
| log_extragalactic | -12.115142 | 1.153037e-02 |
| fmin | fmax | SNR before MCMC | SNR after MCMC |
|---|---|---|---|
| 0.000030 | 0.000079 | 3.166357 | 0.000000 |
| 0.000080 | 0.000128 | 4.160483 | 0.000000 |
| 0.000129 | 0.000900 | 161.962010 | 97.417082 |
| 0.000901 | 0.116198 | 3.370615 | 19.175378 |
| 0.116598 | 0.499799 | 3.829759 | 0.000000 |
Detailed results
Input parameters
- log : log/SO7_sgwb_cosmo.c1.log
- config : config.yml
- subconfig :
- duration : 4.5 yr
- duty_cycle : 0.82
- armlength : 2500000000.0 m
- noise : SciRDv1_redbook/instrumental_noise.npy
- show : False
- fast : 0
- tdi2 : 1
- freqs : [2e-05, 1]
- force_duration : 4.5_yr
- nproc : 24
- report : SciRDv1_redbook/report_SO7_sgwb_cosmo.c1.md
- fom_title : Spectral shape of cosmological stochastic background
- fom_or : ['SI 7.2b']
- fom_objective : Detectability of cosmo SGWB
- fom_config : SO7/sgwb_cosmo.c1.yml
- gw_response : SciRDv1_redbook/gw_response_x.npy
- priors : SO7/parameter_priors.yaml
- fg_galactic : SciRDv1_redbook/sgwb_gb.npy
sgwb binner configuration
'''
- signal_model : {'template':
>, 'params': {'log_amplitude': -10, 'log_pivot': -3.6989700043360187}} - foreground_model : {'galactic': {'template':
>, 'params': {'log_galactic': -7.99269661737877}}, 'extragalactic': {'template': >, 'params': {'log_extragalactic': -12.10416076}}} - channels : AET
- flims : [3e-05, 0.5]
- fres : 1e-06
- obs_time : 142009200.0
- efficiency : 0.82
- regenerate_noise : True
- which_tdi : 2.0
- which_geometrical : numerical
- arm_length : 2500000000.0
- noise_model : {'numerical_param': 1, 'analytical_noise': False, 'path_to_noise': 'SciRDv1_redbook/instrumental_noise.npy', 'which_geometrical': 'numerical', 'which_tdi': '2.0', 'arm_length': 2500000000.0}
- data_origin : /work/SC/lisa/sartira/FOM/lisa-fom.dc82/SciRDv1_redbook/bpl_AET_fg_cg.pkl
- to_rescale : True
- regenerate : True
- SGWBinner_type : power_law
- MCMC_minimization : False
- MCMC_final : True
- info_sampler : {'m3c2': {'nsteps': 10000, 'ntemps': 5, 'nproc': 5}}
- channels_to_use : ['AA', 'EE', 'TT']
- chains_output : /work/SC/lisa/sartira/FOM/lisa-fom.dc82/SciRDv1_redbook/so7-cosmo-chain
- global_fit : False
- which_fg : both
- signal_parameters : 2
- bin_number : 20
- binning_method : Log_spacing
- threshold_merging : -0.0
- output_file : /work/SC/lisa/sartira/FOM/lisa-fom.dc82/SciRDv1_redbook/so7-cosmo-output.txt
- plot_title : Standard
- contour_output : Standard
- contour_points : 7
- show_contours : True
- trasparency_edges : 0.3
- trasparency_bands : 0.25
- legend_inside : False
- foreground : {'galactic': {'log_galactic': -7.99269661737877, 'alpha': array([1.7147]), 'log_fr1': -2.8882208994240948, 'log_frk': -2.6273132089480886, 'log_fr2': -3.462353013672237, 'Tobs_yrs': 4.5}, 'extragalactic': {}}
- signal_template : broken_pl_old '''