FRB 20210823A
One-off burst
- Event ID
- 182126170
- Arrival, 400 MHz
- 2021-08-23 23:00:35.322 UTC
- Right ascension
- 199.240°
- Declination
- 81.281°
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 | 59449.95874209505 | 59449.95874214755 | 59449.95874220903 |
| Arrival time, infinite frequencyMJD | 59449.95860713096 | 59449.958607183464 | 59449.958607244946 |
| Width (fitburst)s | 0.000010 | 0.001752 | 0.000859 |
| Peak frequencyMHz | 535.2 | 548.6 | 540.3 |
| Lowest frequencyMHz | 456.9 | 454.3 | 458.9 |
| Highest frequencyMHz | 626.9 | 662.6 | 636.2 |
| Spectral index | 53.49 | 40.81 | 51.85 |
| Spectral running | -92.01 | -64.67 | -86.34 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 199.240± 0.035degrees
dec- 81.281± 0.196degrees
gl- 121.74degrees
gb- 35.79degrees
Detection and dispersion
bonsai_snr- 24.3
snr_fitb- 76.8
bonsai_dm- 450.5pc cm⁻³
dm_fitb- 450.0834± 0.01066pc cm⁻³
dm_exc_ne2001- 406.1pc cm⁻³
dm_exc_ymw16- 412.6pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59449.95874214755± 1.85 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59449.958607183464± 3.69 × 10⁻⁹MJD
Burst shape
bc_width- 0.01278s
width_fitbDiffers between sub-bursts.- 0.001752± 0.0001117s
scat_time- 0.007280± 0.0004804s
Flux and spectrum
flux- 1.65± 0.73Jy
fluence- 12.82± 5.95Jy ms
peak_freqDiffers between sub-bursts.- 548.6MHz
low_freqDiffers between sub-bursts.- 454.3MHz
high_freqDiffers between sub-bursts.- 662.6MHz
sp_idxDiffers between sub-bursts.- 40.81± 2.73
sp_runDiffers between sub-bursts.- -64.67± 4.10
Exposure and fluence thresholds
exp_up- 461.40± 240.05hour
exp_low- 409.10± 272.29hour
low_ft_68- 20.0Jy ms
up_ft_68- 7.1Jy ms
low_ft_95- 37.3Jy ms
up_ft_95- 13.5Jy ms
Fit quality
chi_sq- 1717776.929
dof- 1723663
flag_frac- 0.351