Detection of X-ray Polarization from the Blazar 1ES 1959+650 with the Imaging X-ray Polarimetry Explorer
Creators: name: Errando, Manel
name: Liodakis, Ioannis
name: Marscher, Alan P.
name: Marshall, Herman L.
name: Middei, Riccardo
name: Negro, Michela
name: Peirson, Abel Lawrence
name: Perri, Matteo
name: Puccetti, Simonetta
name: Rabinowitz, Pazit L.
name: Agudo, Iván
name: Jorstad, Svetlana G.
name: Savchenko, Sergey S.
name: Blinov, Dmitry
name: Bourbah, Ioakeim G.
name: Kiehlmann, Sebastian
name: Kontopodis, Evangelos
name: Mandarakas, Nikos
name: Romanopoulos, Stylianos
name: Skalidis, Raphael
name: Vervelaki, Anna
name: Aceituno, Francisco José
name: Bernardos, Maria I.
name: Bonnoli, Giacomo
name: Casanova, Víctor
name: Agís-González, Beatriz
name: Husillos, César
name: Marchini, Alessandro
name: Sota, Alfredo
name: Kouch, Pouya M.
name: Lindfors, Elina
name: Casadio, Carolina
name: Escudero, Juan
name: Myserlis, Ioannis
name: Imazawa, Ryo
name: Sasada, Mahito
name: Fukazawa, Yasushi
name: Kawabata, Koji S.
name: Uemura, Makoto
name: Mizuno, Tsunefumi
name: Nakaoka, Tatsuya
name: Akitaya, Hiroshi
name: Gurwell, Mark
name: Keating, Garrett K.
name: Rao, Ramprasad
name: Ingram, Adam
name: Massaro, Francesco
name: Antonelli, Lucio Angelo
name: Bonino, Raffaella
name: Cavazzuti, Elisabetta
name: Chen, Chien-Ting
name: Cibrario, Nicolò
name: Ciprini, Stefano
name: De Rosa, Alessandra
name: Di Gesu, Laura
name: Di Pierro, Federico
name: Donnarumma, Immacolata
name: Ehlert, Steven R.
name: Fenu, Francesco
name: Gau, Ephraim
name: Karas, Vladimir
name: Kim, Dawoon E.
name: Krawczynski, Henric
name: Laurenti, Marco
name: Lisalda, Lindsey
name: López-Coto, Rubén
name: Madejski, Grzegorz
name: Marin, Frédéric
name: Marinucci, Andrea
name: Mitsuishi, Ikuyuki
name: Muleri, Fabio
name: Pacciani, Luigi
name: Paggi, Alessandro
name: Petrucci, Pierre-Olivier
name: Cavero, Nicole Rodriguez
name: Romani, Roger W.
name: Tavecchio, Fabrizio
name: Tugliani, Stefano
name: Wu, Kinwah
name: Bachetti, Matteo
name: Baldini, Luca
name: Baumgartner, Wayne H.
name: Bellazzini, Ronaldo
name: Bianchi, Stefano
name: Bongiorno, Stephen D.
name: Brez, Alessandro
name: Bucciantini, Niccolò
name: Capitanio, Fiamma
name: Castellano, Simone
name: Costa, Enrico
name: Del Monte, Ettore
name: Di Lalla, Niccolò
name: Di Marco, Alessandro
name: Doroshenko, Victor
name: Dovčiak, Michal
name: Enoto, Teruaki
name: Evangelista, Yuri
name: Fabiani, Sergio
name: Ferrazzoli, Riccardo
name: Garcia, Javier A.
name: Gunji, Shuichi
name: Hayashida, Kiyoshi
name: Heyl, Jeremy
name: Iwakiri, Wataru
name: Kaaret, Philip
name: Kislat, Fabian
name: Kitaguchi, Takao
name: Kolodziejczak, Jeffery J.
name: La Monaca, Fabio
name: Latronico, Luca
name: Maldera, Simone
name: Manfreda, Alberto
name: Matt, Giorgio
name: Ng, C. -Y.
name: O'Dell, Stephen L.
name: Omodei, Nicola
name: Oppedisano, Chiara
name: Papitto, Alessandro
name: Pavlov, George G.
name: Pesce-Rollins, Melissa
name: Pilia, Maura
name: Possenti, Andrea
name: Poutanen, Juri
name: Ramsey, Brian D.
name: Rankin, John
name: Ratheesh, Ajay
name: Roberts, Oliver J.
name: Sgrò, Carmelo
name: Slane, Patrick
name: Soffitta, Paolo
name: Spandre, Gloria
name: Swartz, Douglas A.
name: Tamagawa, Toru
name: Tavecchio, Fabrizio
name: Taverna, Roberto
name: Tawara, Yuzuru
name: Tennant, Allyn F.
name: Thomas, Nicholas E.
name: Tombesi, Francesco
name: Trois, Alessio
name: Tsygankov, Sergey S.
name: Turolla, Roberto
name: Vink, Jacco
name: Weisskopf, Martin C.
name: Xie, Fei
name: Zane, Silvia
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Observations of linear polarization in the 2-8 keV energy range with the Imaging X-ray Polarimetry Explorer (IXPE) explore the magnetic field geometry and dynamics of the regions generating non-thermal radiation in relativistic jets of blazars. These jets, particularly in blazars whose spectral energy distribution peaks at X-ray energies, emit X-rays via synchrotron radiation from high-energy particles within the jet. IXPE observations of the X-ray selected BL Lac-type blazar 1ES 1959+650 in 2022 May 3-4 showed a significant linear polarization degree of $Π_\mathrm{x} = 8.0\% \pm 2.3\%$ at an electric-vector position angle $ψ_\mathrm{x} = 123^\circ \pm 8^\circ$. However, in 2022 June 9-12, only an upper limit of $Π_\mathrm{x} \leq 5.1\%$ could be derived (at the 99% confidence level). The degree of optical polarization at that time $Π_\mathrm{O} \sim 5\%$ is comparable to the X-ray measurement. We investigate possible scenarios for these findings, including temporal and geometrical depolarization effects. Unlike some other X-ray selected BL Lac objects, there is no significant chromatic dependence of the measured polarization in 1ES 1959+650, and its low X-ray polarization may be attributed to turbulence in the jet flow with dynamical timescales shorter than 1 day.
description: 16 pages, 4 figures, accepted for publication in The Astrophysical Journal