FRB 20181226B
One-off burst
- Arrival, 400 MHz
- 2018-12-26 13:50:55.595 UTC
- Right ascension
- 182.660°
- Declination
- 12.430°
How the sub-bursts differ
This burst has 3 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 | Sub-burst 3 |
|---|---|---|---|
| Arrival time, 400 MHzMJD | 58478.5770322452 | 58478.57703234912 | 58478.5770323965 |
| Arrival time, infinite frequencyMJD | 58478.5769461731 | 58478.57694627706 | 58478.5769463245 |
| Width (fitburst)s | 0.000590 | 0.000871 | 0.001004 |
| Peak frequencyMHz | 461.1 | 430.7 | 549.7 |
| Highest frequencyMHz | 687.5 | 764.2 | 784.9 |
| Spectral index | 4.10 | 1.03 | 11.50 |
| Spectral running | -14.40 | -7.00 | -18.10 |
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Position
ra- 182.660± 0.039degrees
dec- 12.430± 0.200degrees
gl- 267.90degrees
gb- 72.47degrees
Detection and dispersion
bonsai_snr- 52.4
snr_fitb- 176.6
bonsai_dm- 287.9pc cm⁻³
dm_fitb- 287.0364± 0.00170pc cm⁻³
dm_exc_ne2001- 259.3pc cm⁻³
dm_exc_ymw16- 266.3pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 58478.57703234912± 6.80 × 10⁻¹⁰MJD
mjd_infDiffers between sub-bursts.- 58478.57694627706± 8.50 × 10⁻¹⁰MJD
Burst shape
bc_width- 0.00197s
width_fitbDiffers between sub-bursts.- 0.000871± 0.0000230s
scat_time- 0.001098± 0.0000420s
Flux and spectrum
flux- 8.90± 3.10Jy
fluence- 52.00± 17.00Jy ms
peak_freqDiffers between sub-bursts.- 430.7MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 764.2MHz
sp_idxDiffers between sub-bursts.- 1.03± 0.18
sp_runDiffers between sub-bursts.- -7.00± 0.28
Exposure and fluence thresholds
exp_up- 14.70± 4.80hour
exp_low- —
low_ft_68- 0.0Jy ms
up_ft_68- 14.7Jy ms
low_ft_95- 0.0Jy ms
up_ft_95- 25.7Jy ms
Fit quality
chi_sq- 677496.762
dof- 642943
flag_frac- 0.312