FRB 20201225B
A burst from FRB20190804E
- Repeater
- FRB20190804E
- Event ID
- 148980870
- Arrival, 400 MHz
- 2020-12-25 19:07:46.946 UTC
- Right ascension
- 261.287°
- Declination
- 55.033°
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 | 59208.79707113008 | 59208.79707119424 |
| Arrival time, infinite frequencyMJD | 59208.796962326625 | 59208.796962390785 |
| Width (fitburst)s | 0.000515 | 0.000459 |
| Peak frequencyMHz | 456.0 | 407.8 |
| Lowest frequencyMHz | 402.8 | 400.2 |
| Highest frequencyMHz | 516.1 | 453.5 |
| Spectral index | 39.09 | 7.62 |
| Spectral running | -149.82 | -203.92 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 261.287± 0.150degrees
dec- 55.033± 0.037degrees
gl- 82.85degrees
gb- 34.14degrees
Detection and dispersion
bonsai_snr- 45.0
snr_fitb- 89.7
bonsai_dm- 363.5pc cm⁻³
dm_fitb- 362.8419± 0.00801pc cm⁻³
dm_exc_ne2001- 319.5pc cm⁻³
dm_exc_ymw16- 326.3pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 59208.79707113008± 6.21 × 10⁻¹⁰MJD
mjd_infDiffers between sub-bursts.- 59208.796962326625± 2.48 × 10⁻⁹MJD
Burst shape
bc_width- 0.00885s
width_fitbDiffers between sub-bursts.- 0.000515± 0.0000191s
scat_time- 0.001193± 0.0000475s
Flux and spectrum
flux- 0.65± 0.18Jy
fluence- 4.28± 0.83Jy ms
peak_freqDiffers between sub-bursts.- 456.0MHz
low_freqDiffers between sub-bursts.- 402.8MHz
high_freqDiffers between sub-bursts.- 516.1MHz
sp_idxDiffers between sub-bursts.- 39.09± 2.34
sp_runDiffers between sub-bursts.- -149.82± 8.25
Exposure and fluence thresholds
exp_up- 137.10± 70.40hour
exp_low- 0.00± 0.00hour
low_ft_68- 0.0Jy ms
up_ft_68- 2.4Jy ms
low_ft_95- 0.0Jy ms
up_ft_95- 5.1Jy ms
Fit quality
chi_sq- 2155146.345
dof- 2163174
flag_frac- 0.185