FRB 20181117B
One-off burst
- Event ID
- 20695250
- Arrival, 400 MHz
- 2018-11-17 21:30:44.985 UTC
- Right ascension
- 81.750°
- Declination
- 79.985°
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 | 58439.8963539884 | 58439.89635404661 |
| Arrival time, infinite frequencyMJD | 58439.89619266328 | 58439.896192721484 |
| Width (fitburst)s | 0.000601 | 0.000927 |
| Peak frequencyMHz | 526.8 | 472.8 |
| Highest frequencyMHz | 800.2 | 620.8 |
| Spectral index | 3.33 | 10.34 |
| Spectral running | -6.06 | -31.02 |
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Notes
- This event was included in Catalog 1.
- The pulse emission region was extended during fluence estimation.
Position
ra- 81.750± 0.187degrees
dec- 79.985± 0.097degrees
gl- 133.10degrees
gb- 23.16degrees
Detection and dispersion
bonsai_snr- 17.1
snr_fitb- 19.4
bonsai_dm- 540.2pc cm⁻³
dm_fitb- 537.9932± 0.01722pc cm⁻³
dm_exc_ne2001- 473.1pc cm⁻³
dm_exc_ymw16- 470.2pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 58439.8963539884± 2.82 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 58439.89619266328± 5.88 × 10⁻⁹MJD
Burst shape
bc_width- 0.00688s
width_fitbDiffers between sub-bursts.- 0.000601± 0.0000632s
scat_time- 0.000000s
Flux and spectrum
flux- 1.42± 0.63Jy
fluence- 5.19± 1.23Jy ms
peak_freqDiffers between sub-bursts.- 526.8MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 800.2MHz
sp_idxDiffers between sub-bursts.- 3.33± 2.67
sp_runDiffers between sub-bursts.- -6.06± 3.51
Exposure and fluence thresholds
exp_up- 420.10± 234.54hour
exp_low- 387.99± 242.42hour
low_ft_68- 1.7Jy ms
up_ft_68- 0.5Jy ms
low_ft_95- 3.0Jy ms
up_ft_95- 1.0Jy ms
Fit quality
chi_sq- 1299837.252
dof- 1300201
flag_frac- 0.510