FRB 20220420E
One-off burst
- Event ID
- 221316219
- Arrival, 400 MHz
- 2022-04-20 04:54:23.172 UTC
- Right ascension
- 161.927°
- Declination
- 38.912°
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 | 59689.20443454241 | 59689.20443486417 |
| Arrival time, infinite frequencyMJD | 59689.204312354 | 59689.20431267576 |
| Width (fitburst)s | 0.000048 | 0.002160 |
| Peak frequencyMHz | 430.3 | 400.2 |
| Highest frequencyMHz | 567.4 | 715.0 |
| Spectral index | 4.35 | -4.70 |
| Spectral running | -30.05 | 1.26 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 161.927± 0.170degrees
dec- 38.912± 0.167degrees
gl- 180.45degrees
gb- 61.69degrees
Detection and dispersion
bonsai_snr- 32.0
snr_fitb- 42.8
bonsai_dm- 406.8pc cm⁻³
dm_fitb- 407.4786± 0.01660pc cm⁻³
dm_exc_ne2001- 376.5pc cm⁻³
dm_exc_ymw16- 394.3pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59689.20443486417± 2.64 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59689.20431267576± 5.63 × 10⁻⁹MJD
Burst shape
bc_width- 0.01376s
width_fitbDiffers between sub-bursts.- 0.002160± 0.0001851s
scat_time- 0.013198± 0.0008993s
Flux and spectrum
flux- 0.82± 0.27Jy
fluence- 5.62± 1.47Jy ms
peak_freqDiffers between sub-bursts.- 400.2MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 715.0MHz
sp_idxDiffers between sub-bursts.- -4.70± 0.50
sp_runDiffers between sub-bursts.- 1.26± 0.90
Exposure and fluence thresholds
exp_up- 111.26± 42.31hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 2.2Jy ms
low_ft_95- —
up_ft_95- 3.7Jy ms
Fit quality
chi_sq- 1787137.160
dof- 1788954
flag_frac- 0.326