FRB 20200831A
One-off burst
- Event ID
- 126152910
- Arrival, 400 MHz
- 2020-08-31 06:53:25.574 UTC
- Right ascension
- 323.441°
- Declination
- 12.042°
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 | 59092.28710155648 | 59092.28710172594 |
| Arrival time, infinite frequencyMJD | 59092.28680871428 | 59092.286808883735 |
| Width (fitburst)s | 0.002236 | 0.000064 |
| Peak frequencyMHz | 405.2 | 540.0 |
| Highest frequencyMHz | 750.9 | 750.5 |
| Spectral index | 0.15 | 12.74 |
| Spectral running | -6.05 | -21.26 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 323.441± 0.176degrees
dec- 12.042± 0.059degrees
gl- 65.57degrees
gb- -28.11degrees
Detection and dispersion
bonsai_snr- 21.7
snr_fitb- 32.7
bonsai_dm- 977.0pc cm⁻³
dm_fitb- 976.5814± 0.02458pc cm⁻³
dm_exc_ne2001- 924.0pc cm⁻³
dm_exc_ymw16- 933.8pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59092.28710155648± 4.25 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59092.28680871428± 8.51 × 10⁻⁹MJD
Burst shape
bc_width- 0.02261s
width_fitbDiffers between sub-bursts.- 0.002236± 0.0002610s
scat_time- 0.018712± 0.0020973s
Flux and spectrum
flux- 1.09± 0.37Jy
fluence- 16.62± 3.62Jy ms
peak_freqDiffers between sub-bursts.- 405.2MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 750.9MHz
sp_idxDiffers between sub-bursts.- 0.15± 0.73
sp_runDiffers between sub-bursts.- -6.05± 1.28
Exposure and fluence thresholds
exp_up- 74.99± 43.09hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 2.8Jy ms
low_ft_95- —
up_ft_95- 4.7Jy ms
Fit quality
chi_sq- 1885421.021
dof- 1886478
flag_frac- 0.289