FRB 20230825I
One-off burst
- Event ID
- 312571048
- Arrival, 400 MHz
- 2023-08-25 08:58:08.876 UTC
- Right ascension
- 347.406°
- Declination
- 48.796°
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 | 60181.373713463065 | 60181.373713847286 |
| Arrival time, infinite frequencyMJD | 60181.37364667532 | 60181.37364705954 |
| Width (fitburst)s | 0.003884 | 0.005256 |
| Peak frequencyMHz | 800.2 | 471.0 |
| Lowest frequencyMHz | 470.3 | 406.9 |
| Highest frequencyMHz | 800.2 | 545.2 |
| Spectral index | 11.04 | 35.04 |
| Spectral running | -7.85 | -107.53 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 347.406± 0.211degrees
dec- 48.796± 0.214degrees
gl- 106.18degrees
gb- -10.74degrees
Detection and dispersion
bonsai_snr- 12.4
snr_fitb- 20.8
bonsai_dm- 225.6pc cm⁻³
dm_fitb- 222.7263± 0.36786pc cm⁻³
dm_exc_ne2001- 96.9pc cm⁻³
dm_exc_ymw16- 99.7pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 60181.373713847286± 3.01 × 10⁻⁸MJD
mjd_infDiffers between sub-bursts.- 60181.37364705954± 1.14 × 10⁻⁷MJD
Burst shape
bc_width- 0.05112s
width_fitbDiffers between sub-bursts.- 0.005256± 0.0005919s
scat_time- 0.000000s
Flux and spectrum
flux- 0.42± 0.22Jy
fluence- 8.39± 1.62Jy ms
peak_freqDiffers between sub-bursts.- 471.0MHz
low_freqDiffers between sub-bursts.- 406.9MHz
high_freqDiffers between sub-bursts.- 545.2MHz
sp_idxDiffers between sub-bursts.- 35.04± 7.44
sp_runDiffers between sub-bursts.- -107.53± 21.69
Exposure and fluence thresholds
exp_up- 117.32± 64.57hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 4.9Jy ms
low_ft_95- —
up_ft_95- 8.3Jy ms
Fit quality
chi_sq- 1740581.139
dof- 1741003
flag_frac- 0.344