In blazars whose lower-energy emission component peaks in the X-ray band, such as Mrk 501, synchrotron radiation is the dominant emission process from radio to X-rays. Radia… See more

X-ray polarization observations
IXPE is a joint mission of the US National Aeronautics and Space Administration and the Italian Space Agency (Agenzia Spaziale Italiana). A … See more

The data that support the findings of this study are either publicly available at the HEASARC database or available from the corresponding author upon request. See more

I.L. thanks the Kavli Institute for the Physics and Mathematics of the Universe for their hospitality while this paper was written. We thank A. Veledina for discussions that helped imp… See more

Authors and Affiliations
Finnish Centre for Astronomy with ESO, FI-20014, University of Turku, Turku, Finland Ioannis Liodakis, Jenni Jormanain… See more