FRB 20230703A
One-off burst
- Event ID
- 300938875
- Arrival, 400 MHz
- 2023-07-03 01:35:30.281 UTC
- Right ascension
- 184.780°
- Declination
- 48.674°
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 | 60128.06632267193 | 60128.06632269716 |
| Arrival time, infinite frequencyMJD | 60128.06623532277 | 60128.066235347986 |
| Width (fitburst)s | 0.000371 | 0.000497 |
| Peak frequencyMHz | 680.7 | 619.5 |
| Lowest frequencyMHz | 512.3 | 421.9 |
| Spectral index | 30.26 | 13.64 |
| Spectral running | -28.48 | -15.61 |
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Notes
- The pulse emission region was extended during fluence estimation.
- Fitburst. Fitburst was run with an older version that used the upper edge of the frequency channel and the start of the time integration rather than the channel and integration centers used in the current version.
Position
ra- 184.780± 0.160degrees
dec- 48.674± 0.154degrees
gl- 137.00degrees
gb- 67.56degrees
Detection and dispersion
bonsai_snr- 35.0
snr_fitb- 48.5
bonsai_dm- 290.7pc cm⁻³
dm_fitb- 291.2954± 0.00418pc cm⁻³
dm_exc_ne2001- 264.4pc cm⁻³
dm_exc_ymw16- 270.6pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 60128.06632269716± 7.34 × 10⁻¹⁰MJD
mjd_infDiffers between sub-bursts.- 60128.066235347986± 1.45 × 10⁻⁹MJD
Burst shape
bc_width- 0.00393s
width_fitbDiffers between sub-bursts.- 0.000497± 0.0000364s
scat_time- 0.000000s
Flux and spectrum
flux- 1.88± 0.61Jy
fluence- 5.43± 1.66Jy ms
peak_freqDiffers between sub-bursts.- 619.5MHz
low_freqDiffers between sub-bursts.- 421.9MHz
high_freq- 800.2MHz
sp_idxDiffers between sub-bursts.- 13.64± 1.41
sp_runDiffers between sub-bursts.- -15.61± 1.66
Exposure and fluence thresholds
exp_up- 135.93± 43.40hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 1.3Jy ms
low_ft_95- —
up_ft_95- 2.3Jy ms
Fit quality
chi_sq- 1775111.304
dof- 1777453
flag_frac- 0.330