FRB 20220426A
One-off burst
- Event ID
- 222528513
- Arrival, 400 MHz
- 2022-04-26 20:14:22.027 UTC
- Right ascension
- 37.302°
- Declination
- 42.882°
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 | 59695.84331044843 | 59695.84331049459 |
| Arrival time, infinite frequencyMJD | 59695.843038451276 | 59695.84303849744 |
| Width (fitburst)s | 0.000623 | 0.001504 |
| Peak frequencyMHz | 459.7 | 400.2 |
| Highest frequencyMHz | 800.2 | 718.5 |
| Spectral index | 0.86 | -0.19 |
| Spectral running | -3.11 | -6.40 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 37.302± 0.059degrees
dec- 42.882± 0.032degrees
gl- 141.36degrees
gb- -16.46degrees
Detection and dispersion
bonsai_snr- 128.2
snr_fitb- 165.6
bonsai_dm- 906.2pc cm⁻³
dm_fitb- 907.0665± 0.00081pc cm⁻³
dm_exc_ne2001- 817.9pc cm⁻³
dm_exc_ymw16- 811.3pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59695.84331049459± 1.05 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59695.84303849744± 1.08 × 10⁻⁹MJD
Burst shape
bc_width- 0.00197s
width_fitbDiffers between sub-bursts.- 0.001504± 0.0001221s
scat_time- 0.000000s
Flux and spectrum
flux- 2.78± 0.67Jy
fluence- 8.37± 2.02Jy ms
peak_freqDiffers between sub-bursts.- 400.2MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 718.5MHz
sp_idxDiffers between sub-bursts.- -0.19± 0.92
sp_runDiffers between sub-bursts.- -6.40± 1.88
Exposure and fluence thresholds
exp_up- 104.90± 49.31hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 0.7Jy ms
low_ft_95- —
up_ft_95- 1.1Jy ms
Fit quality
chi_sq- 1729460.354
dof- 1756879
flag_frac- 0.338