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 46.887240249416905
| names | mean | error |
|---|---|---|
| log_amplitude_1 | -10.092256 | 7.933428e-02 |
| tilt_1 | 1.249419 | 1.314447e+00 |
| log_amplitude_2 | -10.020215 | 2.013794e-02 |
| tilt_2 | 0.354762 | 3.605016e-01 |
| log_amplitude_3 | -10.485077 | 1.772714e-02 |
| tilt_3 | -2.158216 | 8.305198e-02 |
| log_amplitude_4 | -11.431024 | 1.386850e-01 |
| tilt_4 | -2.770255 | 8.343886e-01 |
| log_amplitude_5 | -17.027806 | 4.478511e-01 |
| tilt_5 | -3.860863 | 1.911061e+00 |
| numerical_noise | 0.999937 | 4.001041e-05 |
| log_galactic | -8.005445 | 8.673670e-03 |
| log_extragalactic | -12.096572 | 1.261808e-02 |
| fmin | fmax | SNR before MCMC | SNR after MCMC |
|---|---|---|---|
| 0.000100 | 0.000153 | 6.214213 | 7.941864 |
| 0.000154 | 0.000234 | 2.909843 | 30.848049 |
| 0.000235 | 0.000840 | 110.677161 | 97.248184 |
| 0.000841 | 0.001283 | 3.496996 | 17.149372 |
| 0.001292 | 0.499799 | 2.489352 | 4.858046 |
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': -7.992696630900474}}, 'extragalactic': {'template': >, 'params': {'log_extragalactic': -12.10416076}}} - channels : AET
- flims : [0.0001, 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_fmin1e-4/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_fmin1e-4/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_fmin1e-4/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': -7.992696630900474, 'alpha': array([1.7147]), 'log_fr1': -2.888220891205446, 'log_frk': -2.6273132068689646, 'log_fr2': -3.4623530194314287, 'Tobs_yrs': 4.5}, 'extragalactic': {}}
- signal_template : broken_pl_old '''