FRB 20210811A
One-off burst
- Event ID
- 180264865
- Arrival, 400 MHz
- 2021-08-11 13:24:22.858 UTC
- Right ascension
- 211.733°
- Declination
- 88.397°
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 | 59437.558597897005 | 59437.558597954776 |
| Arrival time, infinite frequencyMJD | 59437.55845343484 | 59437.55845349261 |
| Width (fitburst)s | 0.001053 | 0.000582 |
| Peak frequencyMHz | 448.3 | 434.0 |
| Highest frequencyMHz | 623.1 | 690.9 |
| Spectral index | 4.81 | 1.73 |
| Spectral running | -21.22 | -10.65 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 211.733± 0.161degrees
dec- 88.397± 0.072degrees
gl- 122.34degrees
gb- 28.64degrees
Detection and dispersion
bonsai_snr- 38.9
snr_fitb- 57.3
bonsai_dm- 481.2pc cm⁻³
dm_fitb- 481.7579± 0.01401pc cm⁻³
dm_exc_ne2001- 428.5pc cm⁻³
dm_exc_ymw16- 432.0pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59437.558597897005± 1.71 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59437.55845343484± 4.54 × 10⁻⁹MJD
Burst shape
bc_width- 0.01081s
width_fitbDiffers between sub-bursts.- 0.001053± 0.0000707s
scat_time- 0.005818± 0.0004403s
Flux and spectrum
flux- 1.61± 0.64Jy
fluence- 14.39± 4.69Jy ms
peak_freqDiffers between sub-bursts.- 448.3MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 623.1MHz
sp_idxDiffers between sub-bursts.- 4.81± 0.87
sp_runDiffers between sub-bursts.- -21.22± 2.12
Exposure and fluence thresholds
exp_up- 2692.08± 770.97hour
exp_low- 1987.98± 820.71hour
low_ft_68- 2.3Jy ms
up_ft_68- 1.6Jy ms
low_ft_95- 4.1Jy ms
up_ft_95- 3.0Jy ms
Fit quality
chi_sq- 1662561.735
dof- 1665834
flag_frac- 0.372