FRB 20220306B
One-off burst
- Event ID
- 214411724
- Arrival, 400 MHz
- 2022-03-06 01:30:19.272 UTC
- Right ascension
- 66.532°
- Declination
- 52.376°
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 | 59644.06272305433 | 59644.06272309062 |
| Arrival time, infinite frequencyMJD | 59644.06255429241 | 59644.062554328695 |
| Width (fitburst)s | 0.000612 | 0.000733 |
| Peak frequencyMHz | 452.5 | 469.4 |
| Highest frequencyMHz | 541.8 | 563.9 |
| Spectral index | 17.41 | 21.85 |
| Spectral running | -70.92 | -68.46 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 66.532± 0.021degrees
dec- 52.376± 0.134degrees
gl- 152.42degrees
gb- 2.25degrees
Detection and dispersion
bonsai_snr- 33.5
snr_fitb- 53.8
bonsai_dm- 562.5pc cm⁻³
dm_fitb- 562.7937± 0.00630pc cm⁻³
dm_exc_ne2001- 375.5pc cm⁻³
dm_exc_ymw16- 275.6pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59644.06272305433± 4.39 × 10⁻¹⁰MJD
mjd_infDiffers between sub-bursts.- 59644.06255429241± 1.94 × 10⁻⁹MJD
Burst shape
bc_width- 0.00688s
width_fitbDiffers between sub-bursts.- 0.000612± 0.0000157s
scat_time- 0.000000s
Flux and spectrum
flux- 1.57± 0.50Jy
fluence- 5.37± 1.43Jy ms
peak_freqDiffers between sub-bursts.- 452.5MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 541.8MHz
sp_idxDiffers between sub-bursts.- 17.41± 1.35
sp_runDiffers between sub-bursts.- -70.92± 4.92
Exposure and fluence thresholds
exp_up- 160.96± 45.61hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 1.6Jy ms
low_ft_95- —
up_ft_95- 2.7Jy ms
Fit quality
chi_sq- 1892991.352
dof- 1895875
flag_frac- 0.286