FRB 20201018A
One-off burst
- Event ID
- 138741016
- Arrival, 400 MHz
- 2020-10-18 19:32:26.014 UTC
- Right ascension
- 200.420°
- Declination
- 48.709°
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 | 59140.81418997344 | 59140.81419004909 |
| Arrival time, infinite frequencyMJD | 59140.813935587976 | 59140.813935663624 |
| Width (fitburst)s | 0.000019 | 0.000206 |
| Peak frequencyMHz | 400.2 | 506.8 |
| Highest frequencyMHz | 572.8 | 784.0 |
| Spectral index | -2.58 | 5.71 |
| Spectral running | -10.72 | -12.10 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 200.420± 0.178degrees
dec- 48.709± 0.127degrees
gl- 109.74degrees
gb- 67.64degrees
Detection and dispersion
bonsai_snr- 26.9
snr_fitb- 39.4
bonsai_dm- 844.3pc cm⁻³
dm_fitb- 848.3344± 0.00282pc cm⁻³
dm_exc_ne2001- 820.0pc cm⁻³
dm_exc_ymw16- 826.9pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59140.81418997344± 2.98 × 10⁻¹⁰MJD
mjd_infDiffers between sub-bursts.- 59140.813935587976± 8.97 × 10⁻¹⁰MJD
Burst shape
bc_width- 0.00885s
width_fitbDiffers between sub-bursts.- 0.000019± 0.0000194s
scat_time- 0.004175± 0.0002787s
Flux and spectrum
flux- 1.06± 0.48Jy
fluence- 8.14± 3.07Jy ms
peak_freqDiffers between sub-bursts.- 400.2MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 572.8MHz
sp_idxDiffers between sub-bursts.- -2.58± 0.93
sp_runDiffers between sub-bursts.- -10.72± 2.99
Exposure and fluence thresholds
exp_up- 121.68± 53.29hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 3.0Jy ms
low_ft_95- —
up_ft_95- 5.4Jy ms
Fit quality
chi_sq- 776791.699
dof- 778336
flag_frac- 0.234