FRB 20200701A

A burst from FRB20200118D

Repeater: FRB20200118D
Event ID: 95677738
Arrival, 400 MHz: 2020-07-01 20:23:45.428 UTC
Right ascension: 106.898°
Declination: 42.752°

How the sub-bursts differ

This burst has 3 sub-bursts. These 8 measurements differ between them and are highlighted below. Everything else is the same for every sub-burst.

Measurement	Sub-burst 1	Sub-burst 2	Sub-burst 3
Arrival time, 400 MHzMJD	59031.84983133962	59031.849831367304	59031.84983142419
Arrival time, infinite frequencyMJD	59031.84964379835	59031.84964382603	59031.84964388292
Width (fitburst)s	0.001083	0.000546	0.001103
Peak frequencyMHz	676.6	617.2	480.4
Lowest frequencyMHz	600.5	526.5	400.2
Highest frequencyMHz	762.3	723.6	577.3
Spectral index	169.79	78.89	24.92
Spectral running	-161.69	-91.04	-68.21

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Localization

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Waterfall

Notes

The pulse emission region was extended during fluence estimation.

Position

ra: 106.898± 0.153degrees
dec: 42.752± 0.163degrees
gl: 174.53degrees
gb: 20.83degrees

Detection and dispersion

bonsai_snr: 32.7
snr_fitb: 48.7
bonsai_dm: 626.0pc cm⁻³
dm_fitb: 625.4198± 0.02126pc cm⁻³
dm_exc_ne2001: 548.7pc cm⁻³
dm_exc_ymw16: 533.6pc cm⁻³

Arrival time

mjd_400Differs between sub-bursts.: 59031.84983133962± 3.63 × 10⁻⁹MJD
mjd_infDiffers between sub-bursts.: 59031.84964379835± 7.34 × 10⁻⁹MJD

Burst shape

bc_width: 0.00983s
width_fitbDiffers between sub-bursts.: 0.001083± 0.0000848s
scat_time: 0.000000s

Flux and spectrum

flux: 0.53± 0.13Jy
fluence: 3.02± 0.60Jy ms
peak_freqDiffers between sub-bursts.: 676.6MHz
low_freqDiffers between sub-bursts.: 600.5MHz
high_freqDiffers between sub-bursts.: 762.3MHz
sp_idxDiffers between sub-bursts.: 169.79± 23.99
sp_runDiffers between sub-bursts.: -161.69± 22.76

Exposure and fluence thresholds

exp_up: 116.65± 52.75hour
exp_low: 0.00± 0.00hour
low_ft_68: 0.0Jy ms
up_ft_68: 0.7Jy ms
low_ft_95: 0.0Jy ms
up_ft_95: 1.5Jy ms

Fit quality

chi_sq: 2057941.883
dof: 2060300
flag_frac: 0.224