FRB 20220725B
A burst from FRB20220505A
- Repeater
- FRB20220505A
- Event ID
- 237431889
- Arrival, 400 MHz
- 2022-07-25 13:45:01.345 UTC
- Right ascension
- 29.679°
- Declination
- 74.872°
How the sub-bursts differ
This burst has 2 sub-bursts. These 8 measurements differ between them and are highlighted below. Everything else is the same for every sub-burst.
| Measurement | Sub-burst 1 | Sub-burst 2 |
|---|---|---|
| Arrival time, 400 MHzMJD | 59785.57293223766 | 59785.57293233777 |
| Arrival time, infinite frequencyMJD | 59785.57275048134 | 59785.57275058145 |
| Width (fitburst)s | 0.000251 | 0.001527 |
| Peak frequencyMHz | 662.6 | 615.3 |
| Lowest frequencyMHz | 594.7 | 534.9 |
| Highest frequencyMHz | 738.3 | 707.7 |
| Spectral index | 198.44 | 101.09 |
| Spectral running | -196.78 | -117.51 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 29.679± 0.049degrees
dec- 74.872± 0.188degrees
gl- 127.37degrees
gb- 12.58degrees
Detection and dispersion
bonsai_snr- 20.3
snr_fitb- 44.7
bonsai_dm- 606.2pc cm⁻³
dm_fitb- 606.1279± 0.03069pc cm⁻³
dm_exc_ne2001- 495.0pc cm⁻³
dm_exc_ymw16- 452.9pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59785.57293223766± 5.91 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59785.57275048134± 1.09 × 10⁻⁸MJD
Burst shape
bc_width- 0.00295s
width_fitbDiffers between sub-bursts.- 0.000251± 0.0000215s
scat_time- 0.009826± 0.0005598s
Flux and spectrum
flux- 1.18± 0.29Jy
fluence- 4.61± 0.96Jy ms
peak_freqDiffers between sub-bursts.- 662.6MHz
low_freqDiffers between sub-bursts.- 594.7MHz
high_freqDiffers between sub-bursts.- 738.3MHz
sp_idxDiffers between sub-bursts.- 198.44± 16.69
sp_runDiffers between sub-bursts.- -196.78± 16.28
Exposure and fluence thresholds
exp_up- 323.90± 154.17hour
exp_low- 251.20± 97.61hour
low_ft_68- 16.6Jy ms
up_ft_68- 2.9Jy ms
low_ft_95- 33.7Jy ms
up_ft_95- 5.8Jy ms
Fit quality
chi_sq- 509068.520
dof- 511054
flag_frac- 0.497