FRB 20221216B
A burst from FRB20220912A
- Repeater
- FRB20220912A
- Event ID
- 255680465
- Arrival, 400 MHz
- 2022-12-16 01:31:25.782 UTC
- Right ascension
- 347.068°
- Declination
- 48.790°
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 | 59929.06349260553 | 59929.063492846544 |
| Arrival time, infinite frequencyMJD | 59929.06342677235 | 59929.06342701337 |
| Width (fitburst)s | 0.004639 | 0.005414 |
| Peak frequencyMHz | 475.2 | 452.7 |
| Lowest frequencyMHz | 431.6 | 410.0 |
| Highest frequencyMHz | 523.2 | 500.0 |
| Spectral index | 85.28 | 57.71 |
| Spectral running | -248.36 | -233.88 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 347.068± 0.225degrees
dec- 48.790± 0.223degrees
gl- 105.97degrees
gb- -10.65degrees
Detection and dispersion
bonsai_snr- 21.7
snr_fitb- 117.3
bonsai_dm- 223.2pc cm⁻³
dm_fitb- 219.5430± 0.08137pc cm⁻³
dm_exc_ne2001- 92.9pc cm⁻³
dm_exc_ymw16- 95.8pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59929.063492846544± 1.18 × 10⁻⁸MJD
mjd_infDiffers between sub-bursts.- 59929.06342701337± 2.71 × 10⁻⁸MJD
Burst shape
bc_width- 0.02064s
width_fitbDiffers between sub-bursts.- 0.005414± 0.0007001s
scat_time- 0.015800± 0.0013115s
Flux and spectrum
flux- 1.39± 0.49Jy
fluence- 28.23± 7.49Jy ms
peak_freqDiffers between sub-bursts.- 452.7MHz
low_freqDiffers between sub-bursts.- 410.0MHz
high_freqDiffers between sub-bursts.- 500.0MHz
sp_idxDiffers between sub-bursts.- 57.71± 7.92
sp_runDiffers between sub-bursts.- -233.88± 29.85
Exposure and fluence thresholds
exp_up- 112.53± 66.79hour
exp_low- 0.00± 0.00hour
low_ft_68- 0.0Jy ms
up_ft_68- 2.6Jy ms
low_ft_95- 0.0Jy ms
up_ft_95- 7.1Jy ms
Fit quality
chi_sq- 1899309.159
dof- 1913046
flag_frac- 0.279