FRB 20230427B
A burst from FRB20220912A
- Repeater
- FRB20220912A
- Event ID
- 286100389
- Arrival, 400 MHz
- 2023-04-27 16:45:24.403 UTC
- Right ascension
- 347.486°
- Declination
- 48.801°
How the sub-bursts differ
This burst has 3 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 | Sub-burst 3 |
|---|---|---|---|
| Arrival time, 400 MHzMJD | 60061.698199113234 | 60061.69819921322 | 60061.69819930422 |
| Arrival time, infinite frequencyMJD | 60061.69813302689 | 60061.69813312687 | 60061.69813321787 |
| Width (fitburst)s | 0.002660 | 0.000831 | 0.000385 |
| Peak frequencyMHz | 578.3 | 471.4 | 461.7 |
| Lowest frequencyMHz | 513.0 | 403.6 | 411.9 |
| Highest frequencyMHz | 651.9 | 550.5 | 517.6 |
| Spectral index | 118.04 | 31.29 | 50.44 |
| Spectral running | -160.33 | -95.55 | -176.32 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 347.486± 0.191degrees
dec- 48.801± 0.191degrees
gl- 106.24degrees
gb- -10.75degrees
Detection and dispersion
bonsai_snr- 17.5
snr_fitb- 29.8
bonsai_dm- 220.8pc cm⁻³
dm_fitb- 220.3873± 0.04111pc cm⁻³
dm_exc_ne2001- 94.7pc cm⁻³
dm_exc_ymw16- 97.5pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 60061.698199113234± 9.18 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 60061.69813302689± 1.54 × 10⁻⁸MJD
Burst shape
bc_width- 0.01278s
width_fitbDiffers between sub-bursts.- 0.002660± 0.0005416s
scat_time- 0.004294± 0.0005467s
Flux and spectrum
flux- 0.75± 0.30Jy
fluence- 6.38± 1.64Jy ms
peak_freqDiffers between sub-bursts.- 578.3MHz
low_freqDiffers between sub-bursts.- 513.0MHz
high_freqDiffers between sub-bursts.- 651.9MHz
sp_idxDiffers between sub-bursts.- 118.04± 37.45
sp_runDiffers between sub-bursts.- -160.33± 50.20
Exposure and fluence thresholds
exp_up- 120.55± 62.10hour
exp_low- 0.00± 0.00hour
low_ft_68- 0.0Jy ms
up_ft_68- 2.6Jy ms
low_ft_95- 0.0Jy ms
up_ft_95- 7.1Jy ms
Fit quality
chi_sq- 1977940.995
dof- 1978813
flag_frac- 0.254