Discovery of X-ray polarization angle rotation in active galaxy Mrk 421
Preprint published in 2023 by
Laura Di Gesu,
Herman L. Marshall,
Steven R. Ehlert,
Dawoon E. Kim 
,
Immacolata Donnarumma,
Fabrizio Tavecchio,
Ioannis Liodakis,
Sebastian Kiehlmann,
Iván Agudo,
Svetlana G. Jorstad,
Fabio Muleri,
Alan P. Marscher,
Simonetta Puccetti,
Riccardo Middei,
Matteo Perri
and other authors.
,
Immacolata Donnarumma,
Fabrizio Tavecchio,
Ioannis Liodakis,
Sebastian Kiehlmann,
Iván Agudo,
Svetlana G. Jorstad,
Fabio Muleri,
Alan P. Marscher,
Simonetta Puccetti,
Riccardo Middei,
Matteo Perri
and other authors.
