FRB 20230904A
One-off burst
- Event ID
- 315496578
- Arrival, 400 MHz
- 2023-09-04 05:50:08.359 UTC
- Right ascension
- 307.951°
- Declination
- 74.466°
How the sub-bursts differ
This burst has 2 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 |
|---|---|---|
| Arrival time, 400 MHzMJD | 60191.24315230526 | 60191.2431523535 |
| Arrival time, infinite frequencyMJD | 60191.243107989736 | 60191.24310803798 |
| Width (fitburst)s | 0.000337 | 0.001048 |
| Peak frequencyMHz | 419.2 | 499.5 |
| Highest frequencyMHz | 743.2 | 779.4 |
| Spectral index | 0.65 | 5.16 |
| Spectral running | -7.02 | -11.64 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 307.951± 0.124degrees
dec- 74.466± 0.160degrees
gl- 108.00degrees
gb- 19.77degrees
Detection and dispersion
bonsai_snr- 48.3
snr_fitb- 79.7
bonsai_dm- 147.6pc cm⁻³
dm_fitb- 147.7851± 0.00107pc cm⁻³
dm_exc_ne2001- 76.2pc cm⁻³
dm_exc_ymw16- 71.7pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 60191.24315230526± 1.05 × 10⁻¹⁰MJD
mjd_infDiffers between sub-bursts.- 60191.243107989736± 3.37 × 10⁻¹⁰MJD
Burst shape
bc_width- 0.00197s
width_fitbDiffers between sub-bursts.- 0.000337± 0.0000035s
scat_time- 0.000000s
Flux and spectrum
flux- 5.50± 1.31Jy
fluence- 11.82± 2.65Jy ms
peak_freqDiffers between sub-bursts.- 419.2MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 743.2MHz
sp_idxDiffers between sub-bursts.- 0.65± 0.32
sp_runDiffers between sub-bursts.- -7.02± 0.67
Exposure and fluence thresholds
exp_up- 300.89± 139.30hour
exp_low- 254.50± 107.95hour
low_ft_68- 8.9Jy ms
up_ft_68- 1.4Jy ms
low_ft_95- 14.4Jy ms
up_ft_95- 2.4Jy ms
Fit quality
chi_sq- 1558404.543
dof- 1564747
flag_frac- 0.410