FRB 20200525B
One-off burst
- Event ID
- 86099483
- Arrival, 400 MHz
- 2020-05-25 07:42:57.561 UTC
- Right ascension
- 238.340°
- Declination
- 31.233°
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 | 58994.321499552774 | 58994.32149968031 |
| Arrival time, infinite frequencyMJD | 58994.32142653198 | 58994.32142665951 |
| Width (fitburst)s | 0.015101 | 0.000557 |
| Peak frequencyMHz | 469.9 | 460.3 |
| Lowest frequencyMHz | 434.7 | 422.7 |
| Highest frequencyMHz | 507.9 | 501.2 |
| Spectral index | 121.80 | 88.91 |
| Spectral running | -379.47 | -317.77 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 238.340± 0.222degrees
dec- 31.233± 0.213degrees
gl- 50.08degrees
gb- 50.35degrees
Detection and dispersion
bonsai_snr- 14.5
snr_fitb- 59.8
bonsai_dm- 242.6pc cm⁻³
dm_fitb- 243.5125± 0.03252pc cm⁻³
dm_exc_ne2001- 216.0pc cm⁻³
dm_exc_ymw16- 217.4pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 58994.321499552774± 1.24 × 10⁻⁸MJD
mjd_infDiffers between sub-bursts.- 58994.32142653198± 1.58 × 10⁻⁸MJD
Burst shape
bc_width- 0.00492s
width_fitbDiffers between sub-bursts.- 0.015101± 0.0008510s
scat_time- 0.004333± 0.0003128s
Flux and spectrum
flux- 0.75± 0.23Jy
fluence- 7.75± 1.38Jy ms
peak_freqDiffers between sub-bursts.- 469.9MHz
low_freqDiffers between sub-bursts.- 434.7MHz
high_freqDiffers between sub-bursts.- 507.9MHz
sp_idxDiffers between sub-bursts.- 121.80± 17.05
sp_runDiffers between sub-bursts.- -379.47± 52.73
Exposure and fluence thresholds
exp_up- 80.03± 45.66hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 1.5Jy ms
low_ft_95- —
up_ft_95- 2.6Jy ms
Fit quality
chi_sq- 1850836.692
dof- 1854402
flag_frac- 0.301