FRB 20181226B
One-off burst
- Event ID
- 23908435
- Arrival, 400 MHz
- 2018-12-26 13:50:55.586 UTC
- Right ascension
- 182.747°
- Declination
- 12.435°
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 | 58478.57703224723 | 58478.577032347195 |
| Arrival time, infinite frequencyMJD | 58478.57694618383 | 58478.57694628379 |
| Width (fitburst)s | 0.000308 | 0.000854 |
| Peak frequencyMHz | 450.4 | 441.1 |
| Highest frequencyMHz | 682.6 | 750.9 |
| Spectral index | 3.15 | 1.58 |
| Spectral running | -13.32 | -8.14 |
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Notes
- This event was included in Catalog 1.
- The pulse emission region was extended during fluence estimation.
Position
ra- 182.747± 0.039degrees
dec- 12.435± 0.179degrees
gl- 268.13degrees
gb- 72.51degrees
Detection and dispersion
bonsai_snr- 52.4
snr_fitb- 160.1
bonsai_dm- 287.9pc cm⁻³
dm_fitb- 287.0075± 0.00351pc cm⁻³
dm_exc_ne2001- 259.1pc cm⁻³
dm_exc_ymw16- 266.3pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 58478.57703224723± 8.22 × 10⁻¹⁰MJD
mjd_infDiffers between sub-bursts.- 58478.57694618383± 1.34 × 10⁻⁹MJD
Burst shape
bc_width- 0.00590s
width_fitbDiffers between sub-bursts.- 0.000308± 0.0000709s
scat_time- 0.009034± 0.0001845s
Flux and spectrum
flux- 7.94± 2.89Jy
fluence- 51.37± 17.85Jy ms
peak_freqDiffers between sub-bursts.- 450.4MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 682.6MHz
sp_idxDiffers between sub-bursts.- 3.15± 1.17
sp_runDiffers between sub-bursts.- -13.32± 2.47
Exposure and fluence thresholds
exp_up- 92.42± 30.48hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 14.7Jy ms
low_ft_95- —
up_ft_95- 26.0Jy ms
Fit quality
chi_sq- 1833971.614
dof- 1859586
flag_frac- 0.299