High Optical-to-X-Ray Polarization Ratio Reveals Compton Scattering in BL Lacertae’s Jet

Agudo, Iván;Liodakis, Ioannis;Otero-Santos, Jorge;Middei, Riccardo;Marscher, Alan;Jorstad, Svetlana;Zhang, Haocheng;Li, Hui;Di Gesu, Laura;Romani, Roger W.;Kim, Dawoon E.;Fenu, Francesco;Marshall, Herman L.;Pacciani, Luigi;Escudero Pedrosa, Juan;Aceituno, Francisco José;Agís-González, Beatriz;Bonnoli, Giacomo;Casanova, Víctor;Morcuende, Daniel;Piirola, Vilppu;Sota, Alfredo;Kouch, Pouya M.;Lindfors, Elina;McCall, Callum;Jermak, Helen E.;Steele, Iain A.;Borman, George A.;Grishina, Tatiana S.;Hagen-Thorn, Vladimir A.;Kopatskaya, Evgenia N.;Larionova, Elena G.;Morozova, Daria A.;Savchenko, Sergey S.;Shishkina, Ekaterina V.;Troitskiy, Ivan S.;Troitskaya, Yulia V.;Vasilyev, Andrey A.;Zhovtan, Alexey V.;Myserlis, Ioannis;Gurwell, Mark;Keating, Garrett;Rao, Ramprasad;Kang, Sincheol;Lee, Sang-Sung;Kim, Sanghyun;Cheong, Whee Yeon;Jeong, Hyeon-Woo;Angelakis, Emmanouil;Kraus, Alexander;Blinov, Dmitry;Maharana, Siddharth;Bachev, Rumen;Jormanainen, Jenni;Nilsson, Kari;Fallah Ramazani, Vandad;Casadio, Carolina;Fuentes, Antonio;Traianou, Efthalia;Thum, Clemens;Gómez, José L.;Antonelli, Lucio Angelo;Bachetti, Matteo;Baldini, Luca;Baumgartner, Wayne H.;Bellazzini, Ronaldo;Bianchi, Stefano;Bongiorno, Stephen D.;Bonino, Raffaella;Brez, Alessandro;Bucciantini, Niccolò;Capitanio, Fiamma;Castellano, Simone;Cavazzuti, Elisabetta;Chen, Chien-Ting;Ciprini, Stefano;Costa, Enrico;De Rosa, Alessandra;Del Monte, Ettore;Di Lalla, Niccolò;Di Marco, Alessandro;Donnarumma, Immacolata;Doroshenko, Victor;Dovčiak, Michal;Ehlert, Steven R.;Enoto, Teruaki;Evangelista, Yuri;Fabiani, Sergio;Ferrazzoli, Riccardo;García, Javier A.;Gunji, Shuichi;Hayashida, Kiyoshi;Heyl, Jeremy;Iwakiri, Wataru;Kaaret, Philip;Karas, Vladimir;Kislat, Fabian;Kitaguchi, Takao;Kolodziejczak, Jeffery J.;Krawczynski, Henric;La Monaca, Fabio;Latronico, Luca;Maldera, Simone;Manfreda, Alberto;Marin, Frédéric;Marinucci, Andrea;Massaro, Francesco;Matt, Giorgio;Mitsuishi, Ikuyuki;Mizuno, Tsunefumi;Muleri, Fabio;Negro, Michela;Ng, Chi-Yung;O'Dell, Stephen L.;Omodei, Nicola;Oppedisano, Chiara;Papitto, Alessandro;Pavlov, George G.;Peirson, Abel L.;Perri, Matteo;Pesce-Rollins, Melissa;Petrucci, Pierre-Olivier;Pilia, Maura;Possenti, Andrea;Poutanen, Juri;Puccetti, Simonetta;Ramsey, Brian D.;Rankin, John;Ratheesh, Ajay;Roberts, Oliver J.;Sgrò, Carmelo;Slane, Patrick;Soffitta, Paolo;Spandre, Gloria;Swartz, Douglas A.;Tamagawa, Toru;Tavecchio, Fabrizio;Taverna, Roberto;Tawara, Yuzuru;Tennant, Allyn F.;Thomas, Nicholas E.;Tombesi, Francesco;Trois, Alessio;Tsygankov, Sergey S.;Turolla, Roberto;Vink, Jacco;Weisskopf, Martin C.;Wu, Kinwah;Xie, Fei;Zane, Silvia

2025