FRB 20221021A
A burst from FRB20220912A
- Repeater
- FRB20220912A
- Event ID
- 247223362
- Arrival, 400 MHz
- 2022-10-21 05:07:29.168 UTC
- Right ascension
- 347.251°
- Declination
- 48.800°
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 | 59873.21353151862 | 59873.21353203499 |
| Arrival time, infinite frequencyMJD | 59873.213464433924 | 59873.2134649503 |
| Width (fitburst)s | 0.005614 | 0.006952 |
| Peak frequencyMHz | 496.6 | 552.6 |
| Lowest frequencyMHz | 449.4 | 441.8 |
| Highest frequencyMHz | 548.8 | 691.2 |
| Spectral index | 99.40 | 29.67 |
| Spectral running | -230.28 | -45.97 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 347.251± 0.239degrees
dec- 48.800± 0.234degrees
gl- 106.09degrees
gb- -10.69degrees
Detection and dispersion
bonsai_snr- 9.4
snr_fitb- 18.2
bonsai_dm- 224.8pc cm⁻³
dm_fitb- 223.7166± 0.31680pc cm⁻³
dm_exc_ne2001- 97.4pc cm⁻³
dm_exc_ymw16- 100.3pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59873.21353203499± 4.78 × 10⁻⁸MJD
mjd_infDiffers between sub-bursts.- 59873.2134649503± 1.06 × 10⁻⁷MJD
Burst shape
bc_width- 0.02556s
width_fitbDiffers between sub-bursts.- 0.006952± 0.0007018s
scat_time- 0.000000s
Flux and spectrum
flux- 0.27± 0.20Jy
fluence- 1.32± 0.52Jy ms
peak_freqDiffers between sub-bursts.- 552.6MHz
low_freqDiffers between sub-bursts.- 441.8MHz
high_freqDiffers between sub-bursts.- 691.2MHz
sp_idxDiffers between sub-bursts.- 29.67± 7.38
sp_runDiffers between sub-bursts.- -45.97± 10.66
Exposure and fluence thresholds
exp_up- 114.87± 64.51hour
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- 1986111.251
dof- 1986433
flag_frac- 0.252