Open Access

Table 1.

Log of the (quasi-)simultaneous X-ray/optical observations of PSR J1023+0038.

Telescope/Instrument (Obs. ID) Start time (MJD) (a) Exposure (s) Band
2017 May
TNG/SiFAP2 57896.9700580 3298 White filter
TNG/SiFAP2 57897.8908020 8397 White filter
XMM-Newton/EPIC-pn (0794580801) 57896.9293980 24 914 0.3–10 keV
XMM-Newton/EPIC-pn (0794580901) 57897.7392740 23 413 0.3–10 keV

2018 December 11–12
Copernicus/Aqueye+ 58464.0446059 1799 White filter
Copernicus/Aqueye+ 58464.0686652 1799 White filter
Copernicus/Aqueye+ 58464.0925580 2699 White filter
Copernicus/Aqueye+ 58464.1329206 2699 White filter
Copernicus/Aqueye+ 58464.1667650 2699 White filter
Copernicus/Aqueye+ 58464.2083977 1799 White filter
XMM-Newton/EPIC-pn (0823750301) 58463.8833467 30 000 0.3–10 keV

2018 December 15
Copernicus/Aqueye+ 58467.0313365 1199 White filter
Copernicus/Aqueye+ 58467.0504218 3599 White filter
Copernicus/Aqueye+ 58467.0951940 1799 White filter
Copernicus/Aqueye+ 58467.1306531 1799 White filter
Copernicus/Aqueye+ 58467.1566119 1799 White filter
Copernicus/Aqueye+ 58467.1820657 1799 White filter
Copernicus/Aqueye+ 58467.2137354 1199 White filter
XMM-Newton/EPIC-pn (0823750401) 58467.9157557 34 000 0.3–10 keV

2019 January
TNG/SiFAP2 58514.9781481 3300 u filter (b)
NICER (1034060118) 58514.9150460 2268 0.2–12 keV
NICER (1034060119) 58514.9805560 6785 0.2–12 keV

2019 February
Copernicus/Aqueye+ 58520.0611407 4499 White filter
Copernicus/Aqueye+ 58520.8774590 3599 White filter
Copernicus/Aqueye+ 58520.9395999 3599 White filter
Copernicus/Aqueye+ 58521.0002527 3599 White filter
NICER (1034060120) 58519.8725930 4265 0.2–12 keV
NICER (1034060121) 58520.0084100 3709 0.2–12 keV

2019 June
TNG/SiFAP2 58636.8837037 2400 White filter
TNG/SiFAP2 58636.9135648 1200 White filter
TNG/SiFAP2 58636.9194676 1560 White filter
NICER (2034060101) 58636.8678240 1185 0.2–12 keV

2020 January
Copernicus/Aqueye+ 58879.0814000 1799 White filter
Copernicus/Aqueye+ 58879.1064600 1799 White filter
TNG/SiFAP2 58878.9843981 3600 White filter
TNG/SiFAP2 58879.0284954 3600 White filter
TNG/SiFAP2 58879.0722454 3600 White filter
TNG/SiFAP2 58879.1163426 3600 White filter
NICER (2034060110) 58878.9268060 2265 0.2–12 keV
NICER (2034060111) 58878.9921300 11 533 0.2–12 keV

2022 January–February
Copernicus/Aqueye+ 59608.0382707 13 395 White filter
Copernicus/Aqueye+ 59609.0113612 13 750 White filter
Copernicus/Aqueye+ 59609.9358742 13 465 White filter
Copernicus/Aqueye+ 59611.9862628 5955 White filter
Copernicus/Aqueye+ 59613.0046037 11 870 White filter
NICER (4034060110) 59607.9890106 4771 0.2–12 keV
NICER (4034060111) 59609.0265844 2496 0.2-12 keV
NICER (4034060112) 59609.9946040 2910 0.2–12 keV
NICER (4034060113) 59611.9905482 1480 0.2–12 keV
NICER (4034060114) 59613.0439361 617 0.2–12 keV

Notes.

(a)

Barycentric dynamical time at exposure start.

(b)

SDSS u filter with λeff = 349 nm and ΔλFWHM = 68 nm. This observation was part of a campaign in which u, g, and r filters were used to investigate any dependences of the pulse amplitude on the spectral band.

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