Fig. 13.
EPIC power spectra of one of the new faint (∼1.3 × 10−14 ergs s−1 cm−2 1–10 keV flux) X-ray pulsators discovered within the EXTraS project with a period of about 128.5 min, namely 3XMM J221900.5+722508 (3XMM id. 233383, 4XMM id. 204025302010035). Upper panel: based on 2XMMi/3XMM-DR4 binned light curves (in the specific case, the 3XMM-DR4 time bin is 11.020s); mid panel: based on 4XMM-DR9 pn camera binned light curve (bin time 3.98 s); lower panel: from EXTraS catalogue (pn+MOS data, counting 300 photons).
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