FRB 20180814B
One-off burst
- Previous name
- 180814.J1554+74
- Event ID
- 10886879
- Arrival, 400 MHz
- 2018-08-14 14:20:16.987 UTC
- Right ascension
- 238.259°
- Declination
- 74.019°
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 | 58344.597418829486 | 58344.59741885007 |
| Arrival time, infinite frequencyMJD | 58344.59734736678 | 58344.59734738736 |
| Width (fitburst)s | 0.000264 | 0.001921 |
| Peak frequencyMHz | 726.9 | 800.2 |
| Lowest frequencyMHz | 628.8 | 400.2 |
| Spectral index | 130.84 | 0.24 |
| Spectral running | -109.61 | 0.02 |
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Notes
- This event was included in Catalog 1.
- Fitburst and/or flux/fluence pipeline results are taken from Catalog 1.
- This event should be excluded from parameter inference due to non-nominal telescope operation.
- The pulse emission region was extended during fluence estimation.
- Exposure. Event occurred during the commissioning period (before 4 September 2018) when system performance and sensitivity were uncharacterized and thus should be excluded from population studies.
- Flux and fluence. Flux/fluence measurements and errors taken from Catalog 1.
Position
ra- 238.259± 0.042degrees
dec- 74.019± 0.383degrees
gl- 108.60degrees
gb- 37.62degrees
Detection and dispersion
bonsai_snr- 18.7
snr_fitb- 28.3
bonsai_dm- 237.8pc cm⁻³
dm_fitb- 238.3166± 0.01418pc cm⁻³
dm_exc_ne2001- 197.1pc cm⁻³
dm_exc_ymw16- 203.6pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 58344.597418829486± 2.96 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 58344.59734736678± 5.18 × 10⁻⁹MJD
Burst shape
bc_width- 0.00492s
width_fitbDiffers between sub-bursts.- 0.000264± 0.0000087s
scat_time- 0.000000s
Flux and spectrum
flux- 3.40± 2.80Jy
fluence- 10.60± 8.30Jy ms
peak_freqDiffers between sub-bursts.- 726.9MHz
low_freqDiffers between sub-bursts.- 628.8MHz
high_freq- 800.2MHz
sp_idxDiffers between sub-bursts.- 130.84± 20.07
sp_runDiffers between sub-bursts.- -109.61± 16.81
Exposure and fluence thresholds
exp_up- 266.20± 145.25hour
exp_low- 219.14± 108.65hour
low_ft_68- —
up_ft_68- —
low_ft_95- —
up_ft_95- —
Fit quality
chi_sq- 1797883.105
dof- 1798675
flag_frac- 0.322