FRB 20181117B
One-off burst
- Arrival, 400 MHz
- 2018-11-17 21:30:44.987 UTC
- Right ascension
- 81.090°
- Declination
- 79.990°
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 | 58439.8963540176 | 58439.8963540732 |
| Arrival time, infinite frequencyMJD | 58439.8961926304 | 58439.8961926861 |
| Width (fitburst)s | 0.001000 | 0.001280 |
| Peak frequencyMHz | 536.4 | 480.4 |
| Highest frequencyMHz | 800.2 | 630.4 |
| Spectral index | 5.40 | 11.40 |
| Spectral running | -9.30 | -31.20 |
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Position
ra- 81.090± 0.190degrees
dec- 79.990± 0.099degrees
gl- 133.04degrees
gb- 23.06degrees
Detection and dispersion
bonsai_snr- 17.1
snr_fitb- 18.9
bonsai_dm- 540.2pc cm⁻³
dm_fitb- 538.2000± 0.00810pc cm⁻³
dm_exc_ne2001- 473.2pc cm⁻³
dm_exc_ymw16- 470.1pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 58439.8963540176± 4.00 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 58439.8961926304± 4.60 × 10⁻⁹MJD
Burst shape
bc_width- 0.00786s
width_fitbDiffers between sub-bursts.- 0.001000± 0.0001400s
scat_time- <0.0013s
Flux and spectrum
flux- 3.60± 3.20Jy
fluence- 11.00± 6.90Jy ms
peak_freqDiffers between sub-bursts.- 536.4MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 800.2MHz
sp_idxDiffers between sub-bursts.- 5.40± 3.50
sp_runDiffers between sub-bursts.- -9.30± 4.50
Exposure and fluence thresholds
exp_up- 69.00± 38.00hour
exp_low- 58.00± 37.00hour
low_ft_68- 4.4Jy ms
up_ft_68- 1.3Jy ms
low_ft_95- 8.0Jy ms
up_ft_95- 2.6Jy ms
Fit quality
chi_sq- 294874.296
dof- 294261
flag_frac- 0.527