FRB 20181222E
One-off burst
- Arrival, 400 MHz
- 2018-12-22 17:15:12.576 UTC
- Right ascension
- 50.640°
- Declination
- 86.970°
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 | 58474.7188951143 | 58474.7188955594 |
| Arrival time, infinite frequencyMJD | 58474.7187967648 | 58474.7187972099 |
| Width (fitburst)s | 0.000254 | 0.000910 |
| Peak frequencyMHz | 455.2 | 492.8 |
| Highest frequencyMHz | 639.5 | 672.3 |
| Spectral index | 5.13 | 9.90 |
| Spectral running | -19.90 | -23.80 |
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Position
ra- 50.640± 0.044degrees
dec- 86.970± 0.250degrees
gl- 124.97degrees
gb- 24.72degrees
Detection and dispersion
bonsai_snr- 17.7
snr_fitb- 36.7
bonsai_dm- 328.4pc cm⁻³
dm_fitb- 327.9797± 0.00480pc cm⁻³
dm_exc_ne2001- 268.1pc cm⁻³
dm_exc_ymw16- 268.2pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 58474.7188955594± 3.70 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 58474.7187972099± 4.00 × 10⁻⁹MJD
Burst shape
bc_width- 0.00393s
width_fitbDiffers between sub-bursts.- 0.000910± 0.0002600s
scat_time- 0.000790± 0.0001200s
Flux and spectrum
flux- 1.12± 0.70Jy
fluence- 5.50± 3.20Jy ms
peak_freqDiffers between sub-bursts.- 492.8MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 672.3MHz
sp_idxDiffers between sub-bursts.- 9.90± 3.50
sp_runDiffers between sub-bursts.- -23.80± 6.80
Exposure and fluence thresholds
exp_up- 220.00± 100.00hour
exp_low- 210.00± 96.00hour
low_ft_68- 4.3Jy ms
up_ft_68- 3.1Jy ms
low_ft_95- 8.6Jy ms
up_ft_95- 6.4Jy ms
Fit quality
chi_sq- 1011125.194
dof- 1010788
flag_frac- 0.351