FRB 20220316B
One-off burst
- Event ID
- 216114333
- Arrival, 400 MHz
- 2022-03-16 19:45:21.102 UTC
- Right ascension
- 350.838°
- Declination
- 40.271°
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 | 59654.82316074144 | 59654.82316090209 | 59654.82316104345 |
| Arrival time, infinite frequencyMJD | 59654.82305592999 | 59654.82305609064 | 59654.823056231995 |
| Width (fitburst)s | 0.001584 | 0.000701 | 0.000091 |
| Peak frequencyMHz | 476.4 | 457.2 | 413.9 |
| Lowest frequencyMHz | 441.9 | 416.5 | 400.2 |
| Highest frequencyMHz | 513.6 | 502.0 | 450.3 |
| Spectral index | 141.97 | 70.28 | 21.69 |
| Spectral running | -407.13 | -263.74 | -322.88 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 350.838± 0.180degrees
dec- 40.271± 0.182degrees
gl- 105.26degrees
gb- -19.56degrees
Detection and dispersion
bonsai_snr- 36.6
snr_fitb- 224.1
bonsai_dm- 349.0pc cm⁻³
dm_fitb- 349.5293± 0.00112pc cm⁻³
dm_exc_ne2001- 277.8pc cm⁻³
dm_exc_ymw16- 286.3pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59654.82316090209± 1.85 × 10⁻¹⁰MJD
mjd_infDiffers between sub-bursts.- 59654.82305609064± 3.84 × 10⁻¹⁰MJD
Burst shape
bc_width- 0.00098s
width_fitbDiffers between sub-bursts.- 0.000701± 0.0000103s
scat_time- 0.000651± 0.0000069s
Flux and spectrum
flux- 4.26± 0.89Jy
fluence- 26.30± 4.16Jy ms
peak_freqDiffers between sub-bursts.- 457.2MHz
low_freqDiffers between sub-bursts.- 416.5MHz
high_freqDiffers between sub-bursts.- 502.0MHz
sp_idxDiffers between sub-bursts.- 70.28± 2.46
sp_runDiffers between sub-bursts.- -263.74± 8.72
Exposure and fluence thresholds
exp_up- 105.75± 52.97hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 7.7Jy ms
low_ft_95- —
up_ft_95- 12.6Jy ms
Fit quality
chi_sq- 1872889.428
dof- 1923085
flag_frac- 0.275