FRB 20230402B
One-off burst
- Event ID
- 280553139
- Arrival, 400 MHz
- 2023-04-02 22:11:38.774 UTC
- Right ascension
- 44.017°
- Declination
- 5.945°
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 | 60036.92475428003 | 60036.924754324646 |
| Arrival time, infinite frequencyMJD | 60036.924565299945 | 60036.92456534457 |
| Width (fitburst)s | 0.000855 | 0.000669 |
| Peak frequencyMHz | 440.9 | 429.2 |
| Highest frequencyMHz | 619.2 | 475.6 |
| Spectral index | 3.87 | 30.68 |
| Spectral running | -19.96 | -219.00 |
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Notes
- The pulse emission region was extended during fluence estimation.
Position
ra- 44.017± 0.164degrees
dec- 5.945± 0.060degrees
gl- 169.91degrees
gb- -45.26degrees
Detection and dispersion
bonsai_snr- 31.4
snr_fitb- 43.6
bonsai_dm- 629.6pc cm⁻³
dm_fitb- 630.2180± 0.00766pc cm⁻³
dm_exc_ne2001- 589.7pc cm⁻³
dm_exc_ymw16- 594.6pc cm⁻³
Arrival time
mjd_400Differs between sub-bursts.- 60036.924754324646± 5.08 × 10⁻¹⁰MJD
mjd_infDiffers between sub-bursts.- 60036.92456534457± 2.35 × 10⁻⁹MJD
Burst shape
bc_width- 0.00688s
width_fitbDiffers between sub-bursts.- 0.000669± 0.0000288s
scat_time- 0.000000s
Flux and spectrum
flux- 2.93± 1.09Jy
fluence- 11.75± 3.98Jy ms
peak_freqDiffers between sub-bursts.- 429.2MHz
low_freq- 400.2MHz
high_freqDiffers between sub-bursts.- 475.6MHz
sp_idxDiffers between sub-bursts.- 30.68± 5.69
sp_runDiffers between sub-bursts.- -219.00± 38.19
Exposure and fluence thresholds
exp_up- 72.21± 39.61hour
exp_low- 0.00± 0.00hour
low_ft_68- —
up_ft_68- 3.0Jy ms
low_ft_95- —
up_ft_95- 5.1Jy ms
Fit quality
chi_sq- 1010595.768
dof- 1012489
flag_frac- 0.428