Update home authored by Wei Changfeng's avatar Wei Changfeng
...@@ -250,32 +250,71 @@ This is due to different normalization items. ...@@ -250,32 +250,71 @@ This is due to different normalization items.
![signal_freq_Weichangfeng_method](uploads/8e27887501d8aba9a1631c05342d6a3f/signal_freq_Weichangfeng_method.png) ![signal_freq_Weichangfeng_method](uploads/8e27887501d8aba9a1631c05342d6a3f/signal_freq_Weichangfeng_method.png)
![signal_freq_Hunter_method](uploads/c5b668283727bdc9f544f81ea23465ee/signal_freq_Hunter_method.png) ![signal_freq_Hunter_method](uploads/c5b668283727bdc9f544f81ea23465ee/signal_freq_Hunter_method.png)
## (12)Hunter's test data
![Hunter_s_test_data](uploads/4b5ab36ac71da7c423f9806519d925bf/Hunter_s_test_data.png) ## (13)VItamin: remake Hunter's test data
![vitamin_corner_timeseries-1](uploads/613fbc3a8058783bf9c65c672449fbd1/vitamin_corner_timeseries-1.png) ### (i) How to remake:
In this test we get frequency domain noise-free signals at detector directly.
What I did: To make my data exactly the same to Hunter's test data, I delete 'adding white Gaussian noise' step, which doesn't show up in Hunter's code.(The method of making test data is written in ‘gen_benchmark_pe.py’) And if I add this step, my data will look so different from Hunter's.
Fig.1 Hunter's test data (whitened):
![01](uploads/9e822df0dd23fc5a8e40fe2bec2cc5d4/01.png)
Fig.2 my data (whitened):
![01_remake](uploads/e4f9fe82dfa6446fa8a28a7df775bb01/01_remake.png)
Fig.3 my data if added white Gaussian noise:
![01_nosiy](uploads/951819818736bdd1e33c3796bdbdd443/01_nosiy.png)
### (ii) What my original data looks like (before whitening and adding Gaussian white nosie):
Fig.4 The signal's plot in time domain:
![bilby_bbh_signal](uploads/34ca57b1a23a37b876deff13324a6dc8/bilby_bbh_signal.png)
I fail to generate a time-domain waveform whose amplitude comes to zero quickly after merging. But, I made waveform the same to Hunter's way and the whitened waveforms do look similar.
In Hunter's test data, the amplitude also doesn't come to zero after merging(as you can see in Fig. 1), and there is a vibration, although it is not obvious. I think whitening step reduces it.
### (iii) Comparison of their performances in VItamin:
Except the first one, all the corner plots from my data are very similar to Hunter's.
(a)
Fig.4 & Fig.5
![0](uploads/cdac31b163fa6022ac91f1d5e74f405b/0.png)
![0_remake_2](uploads/6aa4486b90e3f667e117e856aa531cca/0_remake_2.png)
> mass_1=72.6
> mass_2=39.7
> luminosity_distance=1818
> geocent_time=0.23+1126259642.5
> theta_jn=1.59
> ra=2.26
> dec=0.22
(b)
Fig.6 & Fig.7
![1](uploads/3e94af076a7a04f8fe633cc081c998b8/1.png)
![1_remake_2](uploads/a1de775dafd6b1864b1d1752158c4754/1_remake_2.png)
> mass_1=79.5 > mass_1=79.5
> mass_2=59.7 > mass_2=59.7
> luminosity_distance=1327 > luminosity_distance=1327
> geocent_time=0.16 > geocent_time=0.16+1126259642.5
> theta_jn=0.69 > theta_jn=0.69
> ra=2.79 > ra=2.79
> dec=-0.05 > dec=-0.05
(c)
Fig.8 & Fig.9
![2](uploads/d889d5e82185914b6d02aed30a323fc5/2.png)
![2_remake_2](uploads/7d9982185bdf8101d293c4d35c6aec36/2_remake_2.png)
> mass_1=70.3
> mass_2=63.6
> luminosity_distance=1882
> geocent_time=0.16+1126259642.5
> theta_jn=2.54
> ra=1.97
> dec=1.06
(d)
Fig.10 & Fig.11
![3](uploads/949727cfc1fc44a842a443f4186c5b40/3.png)
![3_remake_2](uploads/74e88b9fc572edd10fec40294344f124/3_remake_2.png)
> mass_1=67.8
> mass_2=50.8
> luminosity_distance=1493
> geocent_time=0.29+1126259642.5
> theta_jn=1.06
> ra=4.06
> dec=-0.17
## (13)VItamin: Bilby BBH waveform new test
In this test we get frequency domain noise-free signals at detector directly.
The signal's plot in time domain:
![bilby_bbh_signal](uploads/276a14a48f4c6800411974f55fcf3c69/bilby_bbh_signal.png)
The whitened noisy signal's plot in time domain:
![bilby_whitened_noisy_signal](uploads/187555468c782ac04c6380bbe313912f/bilby_whitened_noisy_signal.png)
I believe Hunter already wrote the option for truth line function. But the way to activate it just isn't showed yet.
![vitamin_corner_timeseries-0](uploads/edf32cc566eff4ff900fe269badc97ba/vitamin_corner_timeseries-0.png)
> mass_1=57.5
> mass_2=57.5
> luminosity_distance=1800
> geocent_time=0.25
> theta_jn=2.62
> ra=3.14
> dec=0.0
# 2.Data # 2.Data
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