FRB 20181222A
A burst from FRB20180916B
- Repeater
- FRB20180916B
- Event ID
- 23491552
- Arrival, 400 MHz
- 2018-12-22 03:59:23.299 UTC
- Right ascension
- 29.516°
- Declination
- 65.734°
How the sub-bursts differ
This burst has 5 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 | Sub-burst 4 | Sub-burst 5 |
|---|---|---|---|---|---|
| Arrival time, 400 MHzMJD | 58474.16624165815 | 58474.16624159774 | 58474.16624168299 | 58474.1662418916 | 58474.16624177571 |
| Arrival time, infinite frequencyMJD | 58474.166137066044 | 58474.166137005624 | 58474.16613709088 | 58474.166137299486 | 58474.1661371836 |
| Width (fitburst)s | 0.000298 | 0.003313 | 0.000333 | 0.005413 | 0.001938 |
| Peak frequencyMHz | 702.4 | 716.8 | 694.1 | 648.1 | 672.9 |
| Lowest frequencyMHz | 655.3 | 667.2 | 641.3 | 592.0 | 619.9 |
| Highest frequencyMHz | 752.8 | 770.1 | 751.3 | 709.6 | 730.3 |
| Spectral index | 537.88 | 521.56 | 405.15 | 270.09 | 356.19 |
| Spectral running | -478.13 | -447.38 | -367.85 | -280.10 | -342.76 |
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Notes
- This event was included in Catalog 1.
- The pulse emission region was extended during fluence estimation.
Position
ra- 29.516± 0.180degrees
dec- 65.734± 0.185degrees
gl- 129.71degrees
gb- 3.74degrees
Detection and dispersion
bonsai_snr- 24.0
snr_fitb- 230.2
bonsai_dm- 349.4pc cm⁻³
dm_fitb- 348.7978± 0.00483pc cm⁻³
dm_exc_ne2001- 150.3pc cm⁻³
dm_exc_ymw16- 25.9pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 58474.1662418916± 2.77 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 58474.166137299486± 3.13 × 10⁻⁹MJD
Burst shape
bc_width- 0.02261s
width_fitbDiffers between sub-bursts.- 0.005413± 0.0002302s
scat_time- 0.000000s
Flux and spectrum
flux- 4.94± 1.49Jy
fluence- 52.78± 15.35Jy ms
peak_freqDiffers between sub-bursts.- 648.1MHz
low_freqDiffers between sub-bursts.- 592.0MHz
high_freqDiffers between sub-bursts.- 709.6MHz
sp_idxDiffers between sub-bursts.- 270.09± 15.70
sp_runDiffers between sub-bursts.- -280.10± 16.36
Exposure and fluence thresholds
exp_up- 210.98± 96.66hour
exp_low- 0.00± 0.00hour
low_ft_68- 0.0Jy ms
up_ft_68- 4.8Jy ms
low_ft_95- 0.0Jy ms
up_ft_95- 10.6Jy ms
Fit quality
chi_sq- 1166399.949
dof- 1219384
flag_frac- 0.270