FRB 20230911B
One-off burst
- Event ID
- 317913980
- Arrival, 400 MHz
- 2023-09-11 14:40:46.164 UTC
- Right ascension
- 89.691°
- Declination
- 56.930°
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 | 60198.61164540273 | 60198.61164541719 | 60198.61164554997 |
| Arrival time, infinite frequencyMJD | 60198.61156486036 | 60198.611564874824 | 60198.6115650076 |
| Width (fitburst)s | 0.004497 | 0.000083 | 0.001366 |
| Peak frequencyMHz | 480.1 | 656.1 | 448.1 |
| Lowest frequencyMHz | 400.2 | 524.3 | 400.2 |
| Highest frequencyMHz | 800.2 | 800.2 | 569.1 |
| Spectral index | 1.65 | 45.27 | 9.11 |
| Spectral running | -4.52 | -45.79 | -40.30 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 89.691± 0.173degrees
dec- 56.930± 0.060degrees
gl- 156.44degrees
gb- 15.75degrees
Detection and dispersion
bonsai_snr- 44.0
snr_fitb- 208.6
bonsai_dm- 270.1pc cm⁻³
dm_fitb- 268.5958± 0.00310pc cm⁻³
dm_exc_ne2001- 175.0pc cm⁻³
dm_exc_ymw16- 150.8pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 60198.61164541719± 6.07 × 10⁻¹⁰MJD
mjd_infDiffers between sub-bursts.- 60198.611564874824± 1.11 × 10⁻⁹MJD
Burst shape
bc_width- 0.02556s
width_fitbDiffers between sub-bursts.- 0.000083± 0.0000055s
scat_time- 0.008321± 0.0001466s
Flux and spectrum
flux- 5.85± 2.26Jy
fluence- 55.38± 20.87Jy ms
peak_freqDiffers between sub-bursts.- 656.1MHz
low_freqDiffers between sub-bursts.- 524.3MHz
high_freqDiffers between sub-bursts.- 800.2MHz
sp_idxDiffers between sub-bursts.- 45.27± 1.52
sp_runDiffers between sub-bursts.- -45.79± 1.49
Exposure and fluence thresholds
exp_up- 97.67± 88.48hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- —
low_ft_95- —
up_ft_95- —
Fit quality
chi_sq- 1646956.303
dof- 1690453
flag_frac- 0.363