FRB 20221231C
A burst from FRB20220912A
- Repeater
- FRB20220912A
- Event ID
- 259137541
- Arrival, 400 MHz
- 2022-12-31 00:49:10.216 UTC
How the sub-bursts differ
This burst has 3 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 | Sub-burst 3 |
|---|---|---|---|
| Arrival time, 400 MHzMJD | 59944.034145711084 | 59944.03414595417 | 59944.03414602358 |
| Arrival time, infinite frequencyMJD | 59944.03407976088 | 59944.03408000396 | 59944.03408007338 |
| Width (fitburst)s | 0.000907 | 0.002111 | 0.001061 |
| Peak frequencyMHz | 697.0 | 500.5 | 456.8 |
| Lowest frequencyMHz | 658.7 | 400.2 | 419.0 |
| Highest frequencyMHz | 737.6 | 644.0 | 498.2 |
| Spectral index | 797.57 | 16.24 | 81.26 |
| Spectral running | -718.66 | -36.28 | -306.82 |
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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.
Position
ra- —
dec- —
gl- —
gb- —
Detection and dispersion
bonsai_snr- 20.6
snr_fitb- 51.3
bonsai_dm- 222.4pc cm⁻³
dm_fitb- 219.9333± 0.03854pc cm⁻³
dm_exc_ne2001- 105.3pc cm⁻³
dm_exc_ymw16- 107.2pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59944.03414602358± 2.76 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59944.03408007338± 1.19 × 10⁻⁸MJD
Burst shape
bc_width- 0.03146s
width_fitbDiffers between sub-bursts.- 0.001061± 0.0000579s
scat_time- 0.000000s
Flux and spectrum
flux- —
fluence- —
peak_freqDiffers between sub-bursts.- 456.8MHz
low_freqDiffers between sub-bursts.- 419.0MHz
high_freqDiffers between sub-bursts.- 498.2MHz
sp_idxDiffers between sub-bursts.- 81.26± 6.56
sp_runDiffers between sub-bursts.- -306.82± 25.21
Exposure and fluence thresholds
exp_up- —
exp_low- —
low_ft_68- —
up_ft_68- —
low_ft_95- —
up_ft_95- —
Fit quality
chi_sq- 1954164.014
dof- 1956782
flag_frac- 0.263