FRB 20210901A
One-off burst
- Event ID
- 183583898
- Arrival, 400 MHz
- 2021-09-01 17:21:36.193 UTC
- Right ascension
- 122.012°
- Declination
- 34.963°
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 | 59458.72333531118 | 59458.7233355665 |
| Arrival time, infinite frequencyMJD | 59458.72319924829 | 59458.72319950361 |
| Width (fitburst)s | 0.000314 | 0.001255 |
| Peak frequencyMHz | 421.8 | 400.2 |
| Highest frequencyMHz | 684.9 | 655.7 |
| Spectral index | 1.03 | -1.53 |
| Spectral running | -9.79 | -6.35 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 122.012± 0.158degrees
dec- 34.963± 0.099degrees
gl- 186.35degrees
gb- 30.04degrees
Detection and dispersion
bonsai_snr- 29.3
snr_fitb- 38.7
bonsai_dm- 453.3pc cm⁻³
dm_fitb- 453.7477± 0.01664pc cm⁻³
dm_exc_ne2001- 396.6pc cm⁻³
dm_exc_ymw16- 393.3pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59458.7233355665± 2.10 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59458.72319950361± 5.41 × 10⁻⁹MJD
Burst shape
bc_width- 0.00786s
width_fitbDiffers between sub-bursts.- 0.001255± 0.0001219s
scat_time- 0.008116± 0.0006070s
Flux and spectrum
flux- 1.02± 0.48Jy
fluence- 6.94± 2.46Jy ms
peak_freqDiffers between sub-bursts.- 400.2MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 655.7MHz
sp_idxDiffers between sub-bursts.- -1.53± 0.64
sp_runDiffers between sub-bursts.- -6.35± 1.41
Exposure and fluence thresholds
exp_up- 106.07± 42.15hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 1.8Jy ms
low_ft_95- —
up_ft_95- 3.2Jy ms
Fit quality
chi_sq- 1870248.047
dof- 1871736
flag_frac- 0.295