FRB 20220225C
One-off burst
- Event ID
- 213063166
- Arrival, 400 MHz
- 2022-02-25 15:55:30.584 UTC
- Right ascension
- 276.372°
- Declination
- 18.341°
How the sub-bursts differ
This burst has 2 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 |
|---|---|---|
| Arrival time, 400 MHzMJD | 59635.663548316064 | 59635.66354842115 |
| Arrival time, infinite frequencyMJD | 59635.66344779426 | 59635.66344789934 |
| Width (fitburst)s | 0.000355 | 0.000483 |
| Peak frequencyMHz | 439.7 | 459.6 |
| Highest frequencyMHz | 525.5 | 548.2 |
| Spectral index | 13.64 | 20.49 |
| Spectral running | -72.41 | -74.07 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 276.372± 0.319degrees
dec- 18.341± 0.204degrees
gl- 46.70degrees
gb- 13.82degrees
Detection and dispersion
bonsai_snr- 18.8
snr_fitb- 35.0
bonsai_dm- 334.4pc cm⁻³
dm_fitb- 335.2240± 0.01241pc cm⁻³
dm_exc_ne2001- 212.7pc cm⁻³
dm_exc_ymw16- 234.9pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59635.66354842115± 1.21 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59635.66344789934± 3.91 × 10⁻⁹MJD
Burst shape
bc_width- 0.01376s
width_fitbDiffers between sub-bursts.- 0.000483± 0.0000650s
scat_time- 0.002239± 0.0001750s
Flux and spectrum
flux- 1.24± 0.51Jy
fluence- 6.50± 1.98Jy ms
peak_freqDiffers between sub-bursts.- 459.6MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 548.2MHz
sp_idxDiffers between sub-bursts.- 20.49± 3.24
sp_runDiffers between sub-bursts.- -74.07± 10.23
Exposure and fluence thresholds
exp_up- 91.88± 39.23hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 2.6Jy ms
low_ft_95- —
up_ft_95- 4.4Jy ms
Fit quality
chi_sq- 1243321.048
dof- 1244534
flag_frac- 0.283