FRB 20181223A
A burst from FRB20180916B
- Repeater
- FRB20180916B
- Arrival, 400 MHz
- 2018-12-23 03:51:28.963 UTC
- Right ascension
- 29.503°
- Declination
- 65.717°
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 | 58475.1607517816 | 58475.160751885 |
| Arrival time, infinite frequencyMJD | 58475.1606469161 | 58475.16064702 |
| Width (fitburst)s | 0.001995 | 0.005150 |
| Peak frequencyMHz | 652.9 | 607.8 |
| Lowest frequencyMHz | 502.1 | 449.1 |
| Spectral index | 32.70 | 21.00 |
| Spectral running | -33.40 | -25.20 |
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Notes
- Right ascension. RA from Marcote et al. (2020)
- Declination. Dec from Marcote et al. (2020)
- Upper transit exposure. No error on exposure due to precise position. See Section 2.2.
Position
ra- 29.503± 0.000degrees
dec- 65.717± 0.000degrees
gl- 129.71degrees
gb- 3.73degrees
Detection and dispersion
bonsai_snr- 31.8
snr_fitb- 67.2
bonsai_dm- 352.6pc cm⁻³
dm_fitb- 349.7096± 0.00800pc cm⁻³
dm_exc_ne2001- 150.8pc cm⁻³
dm_exc_ymw16- 24.9pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 58475.160751885± 1.20 × 10⁻⁸MJD
mjd_infDiffers between sub-bursts.- 58475.16064702± 1.20 × 10⁻⁸MJD
Burst shape
bc_width- 0.00885s
width_fitbDiffers between sub-bursts.- 0.005150± 0.0009600s
scat_time- <0.0022s
Flux and spectrum
flux- 2.02± 0.77Jy
fluence- 15.70± 5.20Jy ms
peak_freqDiffers between sub-bursts.- 607.8MHz
low_freqDiffers between sub-bursts.- 449.1MHz
high_freq- 800.2MHz
sp_idxDiffers between sub-bursts.- 21.00± 3.30
sp_runDiffers between sub-bursts.- -25.20± 3.90
Exposure and fluence thresholds
exp_up- 46.06± 0.00hour
exp_low- —
low_ft_68- 0.0Jy ms
up_ft_68- 6.8Jy ms
low_ft_95- 0.0Jy ms
up_ft_95- 26.1Jy ms
Fit quality
chi_sq- 769995.486
dof- 757557
flag_frac- 0.392