FRB 20211229A
A burst from FRB20190208A
- Repeater
- FRB20190208A
- Event ID
- 204866054
- Arrival, 400 MHz
- 2021-12-29 20:19:18.192 UTC
- Right ascension
- 283.559°
- Declination
- 46.964°
How the sub-bursts differ
This burst has 6 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 | Sub-burst 4 | Sub-burst 5 | Sub-burst 6 |
|---|---|---|---|---|---|---|
| Arrival time, 400 MHzMJD | 59577.84673773085 | 59577.84673788346 | 59577.84673803029 | 59577.84673813704 | 59577.846738192835 | 59577.84673833683 |
| Arrival time, infinite frequencyMJD | 59577.846563866144 | 59577.846564018764 | 59577.84656416559 | 59577.84656427234 | 59577.84656432814 | 59577.84656447214 |
| Width (fitburst)s | 0.001000 | 0.000637 | 0.001486 | 0.000668 | 0.000707 | 0.002421 |
| Peak frequencyMHz | 737.0 | 682.7 | 601.1 | 534.5 | 565.7 | 478.6 |
| Lowest frequencyMHz | 669.8 | 601.9 | 522.7 | 446.8 | 481.0 | 400.2 |
| Highest frequencyMHz | 800.2 | 774.2 | 691.2 | 639.5 | 665.4 | 600.3 |
| Spectral index | 308.01 | 155.31 | 95.91 | 41.43 | 60.52 | 16.03 |
| Spectral running | -252.21 | -145.41 | -117.88 | -71.58 | -87.43 | -44.83 |
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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 unspecified computational failure in the fluence pipeline.
Position
ra- 283.559± 0.186degrees
dec- 46.964± 0.186degrees
gl- 76.73degrees
gb- 19.02degrees
Detection and dispersion
bonsai_snr- 17.7
snr_fitb- 45.8
bonsai_dm- 580.7pc cm⁻³
dm_fitb- 579.8107± 0.01958pc cm⁻³
dm_exc_ne2001- 508.2pc cm⁻³
dm_exc_ymw16- 514.3pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59577.84673833683± 5.35 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59577.84656447214± 7.94 × 10⁻⁹MJD
Burst shape
bc_width- 0.05997s
width_fitbDiffers between sub-bursts.- 0.002421± 0.0006825s
scat_time- 0.000000s
Flux and spectrum
flux- —
fluence- —
peak_freqDiffers between sub-bursts.- 478.6MHz
low_freqDiffers between sub-bursts.- 400.2MHz
high_freqDiffers between sub-bursts.- 600.3MHz
sp_idxDiffers between sub-bursts.- 16.03± 6.90
sp_runDiffers between sub-bursts.- -44.83± 19.54
Exposure and fluence thresholds
exp_up- 117.82± 60.81hour
exp_low- 0.00± 0.00hour
low_ft_68- 0.0Jy ms
up_ft_68- 2.1Jy ms
low_ft_95- 0.0Jy ms
up_ft_95- 4.5Jy ms
Fit quality
chi_sq- 2019014.791
dof- 2021081
flag_frac- 0.239