FRB 20191218A
A burst from FRB20180916B
- Repeater
- FRB20180916B
- Event ID
- 65395717
- Arrival, 400 MHz
- 2019-12-18 04:09:27.631 UTC
- Right ascension
- 29.796°
- Declination
- 65.730°
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 | 58835.173236389346 | 58835.173236470124 |
| Arrival time, infinite frequencyMJD | 58835.17313168113 | 58835.1731317619 |
| Width (fitburst)s | 0.002450 | 0.001943 |
| Peak frequencyMHz | 468.6 | 440.2 |
| Highest frequencyMHz | 611.9 | 521.1 |
| Spectral index | 10.22 | 15.42 |
| Spectral running | -32.36 | -80.91 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 29.796± 0.211degrees
dec- 65.730± 0.225degrees
gl- 129.82degrees
gb- 3.77degrees
Detection and dispersion
bonsai_snr- 12.9
snr_fitb- 18.4
bonsai_dm- 355.8pc cm⁻³
dm_fitb- 349.1850± 0.08724pc cm⁻³
dm_exc_ne2001- 151.1pc cm⁻³
dm_exc_ymw16- 26.9pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 58835.173236470124± 5.34 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.- 58835.1731317619± 2.67 × 10⁻⁸MJD
Burst shape
bc_width- 0.01278s
width_fitbDiffers between sub-bursts.- 0.001943± 0.0002072s
scat_time- 0.000000s
Flux and spectrum
flux- 0.38± 0.18Jy
fluence- 1.91± 1.14Jy ms
peak_freqDiffers between sub-bursts.- 440.2MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 521.1MHz
sp_idxDiffers between sub-bursts.- 15.42± 4.33
sp_runDiffers between sub-bursts.- -80.91± 18.81
Exposure and fluence thresholds
exp_up- 186.73± 108.24hour
exp_low- 0.00± 0.00hour
low_ft_68- 0.0Jy ms
up_ft_68- 4.5Jy ms
low_ft_95- 0.0Jy ms
up_ft_95- 10.0Jy ms
Fit quality
chi_sq- 2130448.924
dof- 2130775
flag_frac- 0.197