FRB 20211229E
One-off burst
- Event ID
- 204828935
- Arrival, 400 MHz
- 2021-12-29 04:39:22.183 UTC
- Right ascension
- 46.219°
- Declination
- 85.275°
How the sub-bursts differ
This burst has 3 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 | Sub-burst 3 |
|---|---|---|---|
| Arrival time, 400 MHzMJD | 59577.19400645904 | 59577.194006693586 | 59577.19400674384 |
| Arrival time, infinite frequencyMJD | 59577.193861328145 | 59577.19386156269 | 59577.19386161295 |
| Width (fitburst)s | 0.000241 | 0.000395 | 0.004991 |
| Peak frequencyMHz | 474.5 | 430.7 | 400.2 |
| Highest frequencyMHz | 735.5 | 495.8 | 636.7 |
| Spectral index | 4.08 | 17.00 | -0.63 |
| Spectral running | -11.99 | -115.88 | -9.33 |
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Notes
- The pulse emission region was extended during fluence estimation.
- Flux and fluence. Flux/fluence could not be determined due to an incorrect peak flux measurement.
Position
ra- 46.219± 0.212degrees
dec- 85.275± 0.279degrees
gl- 125.76degrees
gb- 23.15degrees
Detection and dispersion
bonsai_snr- 16.6
snr_fitb- 34.0
bonsai_dm- 483.2pc cm⁻³
dm_fitb- 483.9880± 0.00188pc cm⁻³
dm_exc_ne2001- 420.3pc cm⁻³
dm_exc_ymw16- 418.3pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59577.19400674384± 4.26 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59577.19386161295± 4.29 × 10⁻⁹MJD
Burst shape
bc_width- 0.01180s
width_fitbDiffers between sub-bursts.- 0.004991± 0.0003169s
scat_time- 0.000000s
Flux and spectrum
flux- —
fluence- —
peak_freqDiffers between sub-bursts.- 400.2MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 636.7MHz
sp_idxDiffers between sub-bursts.- -0.63± 1.40
sp_runDiffers between sub-bursts.- -9.33± 3.98
Exposure and fluence thresholds
exp_up- 885.90± 432.72hour
exp_low- 905.91± 450.76hour
low_ft_68- —
up_ft_68- —
low_ft_95- —
up_ft_95- —
Fit quality
chi_sq- 1765130.317
dof- 1766270
flag_frac- 0.335