FRB 20221208C
A burst from FRB20220912A
- Repeater
- FRB20220912A
- Event ID
- 254565716
- Arrival, 400 MHz
- 2022-12-08 02:49:43.225 UTC
How the sub-bursts differ
This burst has 2 sub-bursts. These 8 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 | 59921.11786131347 | 59921.117861404855 |
| Arrival time, infinite frequencyMJD | 59921.117795342536 | 59921.117795433915 |
| Width (fitburst)s | 0.007104 | 0.000734 |
| Peak frequencyMHz | 658.2 | 551.6 |
| Lowest frequencyMHz | 639.8 | 527.4 |
| Highest frequencyMHz | 677.1 | 576.9 |
| Spectral index | 2845.10 | 733.40 |
| Spectral running | -2859.04 | -1142.85 |
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Notes
- This event was detected in the sidelobes of the CHIME primary beam.
- The pulse emission region was extended during fluence estimation.
- Localization. Localization not available for sidelobe events.
- Exposure. Exposure not available for sidelobe events.
- Flux and fluence. Flux and fluence not available for sidelobe events.
- Fitburst. Fitburst was run with an older version that used the upper edge of the frequency channel and the start of the time integration rather than the channel and integration centers used in the current version.
Position
ra- —
dec- —
gl- —
gb- —
Detection and dispersion
bonsai_snr- 14.0
snr_fitb- 32.6
bonsai_dm- 222.4pc cm⁻³
dm_fitb- 220.0024± 0.17890pc cm⁻³
dm_exc_ne2001- 110.0pc cm⁻³
dm_exc_ymw16- 110.3pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59921.117861404855± 2.55 × 10⁻⁸MJD
mjd_infDiffers between sub-bursts.- 59921.117795433915± 5.94 × 10⁻⁸MJD
Burst shape
bc_width- 0.01081s
width_fitbDiffers between sub-bursts.- 0.000734± 0.0001085s
scat_time- 0.008063± 0.0009661s
Flux and spectrum
flux- —
fluence- —
peak_freqDiffers between sub-bursts.- 551.6MHz
low_freqDiffers between sub-bursts.- 527.4MHz
high_freqDiffers between sub-bursts.- 576.9MHz
sp_idxDiffers between sub-bursts.- 733.40± 97.90
sp_runDiffers between sub-bursts.- -1142.85± 152.55
Exposure and fluence thresholds
exp_up- —
exp_low- —
low_ft_68- —
up_ft_68- —
low_ft_95- —
up_ft_95- —
Fit quality
chi_sq- 1927904.006
dof- 1928922
flag_frac- 0.273