FRB 20210925F
One-off burst
- Event ID
- 187896637
- Arrival, 400 MHz
- 2021-09-25 04:11:39.249 UTC
- Right ascension
- 305.880°
- Declination
- 56.236°
How the sub-bursts differ
This burst has 2 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 |
|---|---|---|
| Arrival time, 400 MHzMJD | 59482.174759710964 | 59482.17475982854 |
| Arrival time, infinite frequencyMJD | 59482.17461112393 | 59482.174611241506 |
| Width (fitburst)s | 0.002562 | 0.001397 |
| Peak frequencyMHz | 479.7 | 459.2 |
| Lowest frequencyMHz | 429.5 | 403.1 |
| Highest frequencyMHz | 535.9 | 523.2 |
| Spectral index | 68.03 | 37.30 |
| Spectral running | -187.61 | -135.52 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 305.880± 0.247degrees
dec- 56.236± 0.248degrees
gl- 91.56degrees
gb- 10.70degrees
Detection and dispersion
bonsai_snr- 8.9
snr_fitb- 16.2
bonsai_dm- 497.4pc cm⁻³
dm_fitb- 495.5137± 0.09102pc cm⁻³
dm_exc_ne2001- 370.5pc cm⁻³
dm_exc_ymw16- 338.1pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59482.17475982854± 6.70 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 59482.174611241506± 2.81 × 10⁻⁸MJD
Burst shape
bc_width- 0.01769s
width_fitbDiffers between sub-bursts.- 0.001397± 0.0001946s
scat_time- 0.000000s
Flux and spectrum
flux- 0.25± 0.13Jy
fluence- 2.73± 0.59Jy ms
peak_freqDiffers between sub-bursts.- 459.2MHz
low_freqDiffers between sub-bursts.- 403.1MHz
high_freqDiffers between sub-bursts.- 523.2MHz
sp_idxDiffers between sub-bursts.- 37.30± 13.35
sp_runDiffers between sub-bursts.- -135.52± 44.48
Exposure and fluence thresholds
exp_up- 133.18± 81.25hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 2.0Jy ms
low_ft_95- —
up_ft_95- 3.4Jy ms
Fit quality
chi_sq- 1910203.454
dof- 1910455
flag_frac- 0.280