FRB 20230418A
One-off burst
- Event ID
- 283807785
- Arrival, 400 MHz
- 2023-04-18 03:49:19.784 UTC
- Right ascension
- 143.578°
- Declination
- 62.750°
How the sub-bursts differ
This burst has 3 sub-bursts. These 7 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 | 60052.159256674204 | 60052.15925676084 | 60052.159256844156 |
| Arrival time, infinite frequencyMJD | 60052.15910450866 | 60052.1591045953 | 60052.15910467862 |
| Width (fitburst)s | 0.000133 | 0.000692 | 0.000171 |
| Peak frequencyMHz | 450.7 | 476.2 | 400.2 |
| Highest frequencyMHz | 584.2 | 733.1 | 667.9 |
| Spectral index | 8.14 | 4.30 | -0.40 |
| Spectral running | -34.22 | -12.37 | -7.99 |
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Notes
- The pulse emission region was extended during fluence estimation.
- Flux and fluence. Flux/fluence could not be determined due to an unspecified computational failure in the fluence pipeline.
Position
ra- 143.578± 0.064degrees
dec- 62.750± 0.181degrees
gl- 150.85degrees
gb- 42.16degrees
Detection and dispersion
bonsai_snr- 28.2
snr_fitb- 36.8
bonsai_dm- 506.7pc cm⁻³
dm_fitb- 507.4475± 0.00204pc cm⁻³
dm_exc_ne2001- 466.5pc cm⁻³
dm_exc_ymw16- 475.8pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 60052.15925676084± 3.61 × 10⁻¹⁰MJD
mjd_infDiffers between sub-bursts.- 60052.1591045953± 7.09 × 10⁻¹⁰MJD
Burst shape
bc_width- 0.00197s
width_fitbDiffers between sub-bursts.- 0.000692± 0.0000226s
scat_time- 0.000000s
Flux and spectrum
flux- —
fluence- —
peak_freqDiffers between sub-bursts.- 476.2MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 733.1MHz
sp_idxDiffers between sub-bursts.- 4.30± 0.78
sp_runDiffers between sub-bursts.- -12.37± 1.57
Exposure and fluence thresholds
exp_up- 170.42± 83.86hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- —
low_ft_95- —
up_ft_95- —
Fit quality
chi_sq- 1845769.259
dof- 1847108
flag_frac- 0.304