FRB 20220811A
One-off burst
- Event ID
- 239851132
- Arrival, 400 MHz
- 2022-08-11 05:37:12.079 UTC
- Right ascension
- 284.706°
- Declination
- 38.765°
How the sub-bursts differ
This burst has 2 sub-bursts. These 6 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 | 59802.23416751587 | 59802.23416758361 |
| Arrival time, infinite frequencyMJD | 59802.2339281187 | 59802.23392818644 |
| Width (fitburst)s | 0.002157 | 0.000080 |
| Peak frequencyMHz | 565.0 | 483.4 |
| Spectral index | 9.56 | 2.72 |
| Spectral running | -13.86 | -7.21 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 284.706± 0.234degrees
dec- 38.765± 0.235degrees
gl- 69.05degrees
gb- 15.26degrees
Detection and dispersion
bonsai_snr- 10.0
snr_fitb- 14.2
bonsai_dm- 798.2pc cm⁻³
dm_fitb- 798.3508± 0.01030pc cm⁻³
dm_exc_ne2001- 707.6pc cm⁻³
dm_exc_ymw16- 716.9pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59802.23416758361± 1.80 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59802.23392818644± 3.58 × 10⁻⁹MJD
Burst shape
bc_width- 0.01180s
width_fitbDiffers between sub-bursts.- 0.000080± 0.0000490s
scat_time- 0.005539± 0.0009994s
Flux and spectrum
flux- 0.42± 0.20Jy
fluence- 3.29± 1.28Jy ms
peak_freqDiffers between sub-bursts.- 483.4MHz
low_freq- 400.2MHz
high_freq- 800.2MHz
sp_idxDiffers between sub-bursts.- 2.72± 2.60
sp_runDiffers between sub-bursts.- -7.21± 3.77
Exposure and fluence thresholds
exp_up- 93.52± 58.30hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 3.3Jy ms
low_ft_95- —
up_ft_95- 6.1Jy ms
Fit quality
chi_sq- 1825699.525
dof- 1825890
flag_frac- 0.312