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Table 1.

Observing systems and timing datasets of J1455−3330.

Telescope JBO Nançay GBT MeerKAT
Receiver L-band L-band Rcvr_800 Rcvr_1_2 L-band

Backend AFB DFB BON NUPPI GASP GUPPI GASP GUPPI PTUSE
CF (MHz) 1402 1520 1400 1484 844 820.5 1410 1518 1283.58
BW (MHz) 64 380 64/128 512 64 180 64 640 856

Start MJD 48920 54849 53375 55819 53217 55278 53219 55429 58589
End MJD 55114 60471 55812 60113 55578 58940 55245 58939 60411
No. of ToAs 297 67 671 3617 479 4843 564 4932 991

Weighted rms residual (μs) 64.406 24.187 5.282 2.648 4.835 3.918 5.679 3.748 1.895
Reduced χ2 1.01 0.96 0.98 0.99 0.94 0.93 1.02 1.04 0.98
EFAC 1.07 1.21 1.06 1.30 0.99 1.02 0.99 1.02 1.07
log10(EQUAD) −4.38 −7.09 −9.83 −7.84 −5.89 −8.61 −5.89 −8.61 −6.3

Notes. The table shows the telescopes, receivers, backend specifications, associated centre observing frequency (CF), the effective observable bandwidth (BW), the number of frequency channels (Nchans), the time span of the dataset, the timespan in years, the number of ToAs, best-fit reduced χ2 derived from a subsequent TEMPO2 fit, and the derived white-noise parameters EFAC and EQUAD, which were determined with temponest.

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