FRB 20190308B
One-off burst
- Arrival, 400 MHz
- 2019-03-08 11:12:28.333 UTC
- Right ascension
- 38.590°
- Declination
- 83.620°
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 | 58550.4669946001 | 58550.4669946329 |
| Arrival time, infinite frequencyMJD | 58550.4669405705 | 58550.4669406033 |
| Width (fitburst)s | 0.000186 | 0.000520 |
| Peak frequencyMHz | 477.2 | 455.5 |
| Highest frequencyMHz | 587.9 | 585.3 |
| Spectral index | 18.60 | 9.50 |
| Spectral running | -52.90 | -37.00 |
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Position
ra- 38.590± 0.040degrees
dec- 83.620± 0.300degrees
gl- 125.90degrees
gb- 21.35degrees
Detection and dispersion
bonsai_snr- 10.3
snr_fitb- 21.8
bonsai_dm- 179.5pc cm⁻³
dm_fitb- 180.1800± 0.00700pc cm⁻³
dm_exc_ne2001- 111.5pc cm⁻³
dm_exc_ymw16- 106.0pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 58550.4669946001± 1.50 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 58550.4669405705± 2.60 × 10⁻⁹MJD
Burst shape
bc_width- 0.00197s
width_fitbDiffers between sub-bursts.- 0.000186± 0.0000860s
scat_time- 0.000134± 0.0000400s
Flux and spectrum
flux- 1.11± 0.87Jy
fluence- 1.39± 0.85Jy ms
peak_freqDiffers between sub-bursts.- 477.2MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 587.9MHz
sp_idxDiffers between sub-bursts.- 18.60± 2.90
sp_runDiffers between sub-bursts.- -52.90± 7.60
Exposure and fluence thresholds
exp_up- 107.00± 56.00hour
exp_low- 103.00± 56.00hour
low_ft_68- 2.5Jy ms
up_ft_68- 1.2Jy ms
low_ft_95- 5.1Jy ms
up_ft_95- 2.5Jy ms
Fit quality
chi_sq- 392158.517
dof- 391540
flag_frac- 0.371