FRB 20211228A
A burst from FRB20190208A
- Repeater
- FRB20190208A
- Event ID
- 204770426
- Arrival, 400 MHz
- 2021-12-28 20:25:30.649 UTC
- Right ascension
- 283.547°
- Declination
- 46.962°
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 | 59576.85104912403 | 59576.851049181394 | 59576.85104922966 |
| Arrival time, infinite frequencyMJD | 59576.85087526608 | 59576.85087532345 | 59576.85087537171 |
| Width (fitburst)s | 0.000472 | 0.000633 | 0.001897 |
| Peak frequencyMHz | 528.1 | 488.0 | 455.9 |
| Lowest frequencyMHz | 457.5 | 409.9 | 400.2 |
| Highest frequencyMHz | 609.7 | 581.0 | 542.4 |
| Spectral index | 61.97 | 30.06 | 19.86 |
| Spectral running | -111.70 | -75.74 | -76.24 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 283.547± 0.188degrees
dec- 46.962± 0.186degrees
gl- 76.72degrees
gb- 19.03degrees
Detection and dispersion
bonsai_snr- 20.1
snr_fitb- 31.9
bonsai_dm- 580.3pc cm⁻³
dm_fitb- 579.7881± 0.02014pc cm⁻³
dm_exc_ne2001- 508.2pc cm⁻³
dm_exc_ymw16- 514.3pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59576.851049181394± 2.07 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59576.85087532345± 6.39 × 10⁻⁹MJD
Burst shape
bc_width- 0.00885s
width_fitbDiffers between sub-bursts.- 0.000633± 0.0000483s
scat_time- 0.000000s
Flux and spectrum
flux- 0.55± 0.22Jy
fluence- 5.04± 1.24Jy ms
peak_freqDiffers between sub-bursts.- 488.0MHz
low_freqDiffers between sub-bursts.- 409.9MHz
high_freqDiffers between sub-bursts.- 581.0MHz
sp_idxDiffers between sub-bursts.- 30.06± 6.47
sp_runDiffers between sub-bursts.- -75.74± 15.43
Exposure and fluence thresholds
exp_up- 118.57± 59.30hour
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- 750982.592
dof- 751982
flag_frac- 0.260