Radio timing constraints on the mass of the binary pulsar PSR J1528−3146

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Volume 674 (June 2023)

A&A, 674 (2023) A71

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Table 1.

Summary of observation parameters and TOA properties for each of the datasets considered in the timing study.

Dataset	Parkes AFB	Parkes UWL	MeerKAT	Nançay BON	Nançay NUPPI
Start of observations (MJD)	52 179	58 759	58 557	54 065	55 848
End of observations (MJD)	53 262	59 216	59 319	55 819	59 725
Observing frequency (MHz)	1398	2368	1284	1398	1484
Frequency bandwidth (MHz)	256	3328	776/856 ^(c)	64/128 ^(d)	512
Number of TOAs	169	53	936	866	11 454
Bandwidth per TOA (MHz)	128	3328 ^(b)	97/107 ^(c)	32/64 ^(d)	64
Time per TOA (s)	– ^(a)	600	600	600	600
Median TOA uncertainty (μs)	19.3	3.2	3.5	30.4	29.0
Weighted residual rms (μs)	12.8	4.3	3.0	16.3	16.3
EFAC	1.13	1.69	1.22	0.98	0.98

Notes.

^(a)

These observations were scrunched in time to single sub-integrations. See Jacoby et al. (2007) for details on the corresponding observations.

^(b)

For this dataset the TOAs were generated using the wide-band template matching technique implemented in PulsePortraiture (see Pennucci et al. 2014).

^(c)

The bulk of the MeerKAT observations covered a total of 856 MHz of bandwidth. For these observations, we grouped the channels into eight sub-bands of 107 MHz each. Other observations covered a slightly shorter bandwidth of 776 MHz – for these, we also grouped the channels in eight sub-bands of 97 MHz.

^(d)

The original frequency bandwidth for the BON backend of 64 MHz increased to 128 MHz in July 2008. For observations taken prior to July 2008, the bandwidth of 64 MHz was split into 32 MHz sub-bands; for the other observations, the bandwidth of 128 MHz was split into 64 MHz sub-bands.

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