Open Access

Table B.1.

Polarisation properties of Mrk 501 measured by IXPE during the new observations (2024, 2025) carried out during Cycle 1.

obsID Start time [MJD] End time [MJD] PD [%] PD error [%] PA [deg] PA error [deg]
03008801 60408.108 60410.176 17.4 2.8 124.7 4.6
03008901 60498.836 60500.912 11.7 2.4 135.5 6.0
03009001 60530.194 60534.295 11.2 2.9 137.2 7.5
03009101 60678.163 60680.194 ≤14.9 - - -

Notes. Start and end time are reported, together with the median polarisation degree and its error, as well as the median polarisation angle and its error. The last observation was not a detection, but a 3σ upper limit, and therefore has no measurement on the PA and it was not included in the analysis.

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