X-Ray Polarization of the BL Lacertae Type Blazar 1ES 0229+200
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Published:2023-12-01
Issue:1
Volume:959
Page:61
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ISSN:0004-637X
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Container-title:The Astrophysical Journal
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language:
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Short-container-title:ApJ
Author:
Ehlert Steven R.ORCID, Liodakis IoannisORCID, Middei RiccardoORCID, Marscher Alan P.ORCID, Tavecchio FabrizioORCID, Agudo IvánORCID, Kouch Pouya M.ORCID, Lindfors ElinaORCID, Nilsson KariORCID, Myserlis IoannisORCID, Gurwell MarkORCID, Rao RamprasadORCID, Aceituno Francisco JoséORCID, Bonnoli GiacomoORCID, Casanova Víctor, Agís-González BeatrizORCID, Escudero JuanORCID, Husillos CésarORCID, Otero Santos Jorge, Sota AlfredoORCID, Angelakis EmmanouilORCID, Kraus AlexanderORCID, Keating Garrett K.ORCID, Antonelli Lucio A.ORCID, Bachetti MatteoORCID, Baldini LucaORCID, Baumgartner Wayne H.ORCID, Bellazzini RonaldoORCID, Bianchi StefanoORCID, Bongiorno Stephen D.ORCID, Bonino RaffaellaORCID, Brez AlessandroORCID, Bucciantini NiccolóORCID, Capitanio FiammaORCID, Castellano SimoneORCID, Cavazzuti ElisabettaORCID, Chen Chien-TingORCID, Ciprini StefanoORCID, Costa EnricoORCID, De Rosa AlessandraORCID, Del Monte EttoreORCID, Di Gesu LauraORCID, Di Lalla NiccolóORCID, Di Marco AlessandroORCID, Donnarumma ImmacolataORCID, Doroshenko VictorORCID, Dovčiak MichalORCID, Enoto TeruakiORCID, Evangelista YuriORCID, Fabiani SergioORCID, Ferrazzoli RiccardoORCID, Garcia Javier A.ORCID, Gunji ShuichiORCID, Hayashida Kiyoshi, Heyl JeremyORCID, Iwakiri WataruORCID, Jorstad Svetlana G.ORCID, Kaaret PhilipORCID, Karas VladimirORCID, Kislat FabianORCID, Kitaguchi Takao, Kolodziejczak Jeffery J.ORCID, Krawczynski HenricORCID, La Monaca FabioORCID, Latronico LucaORCID, Maldera SimoneORCID, Manfreda AlbertoORCID, Marin FrédéricORCID, Marinucci AndreaORCID, Marshall Herman L.ORCID, Massaro FrancescoORCID, Matt GiorgioORCID, Mitsuishi Ikuyuki, Mizuno TsunefumiORCID, Muleri FabioORCID, Negro MichelaORCID, Ng C.-Y.ORCID, O’Dell Stephen L.ORCID, Omodei NicolaORCID, Oppedisano ChiaraORCID, Papitto AlessandroORCID, Pavlov George G.ORCID, Peirson Abel L.ORCID, Perri MatteoORCID, Pesce-Rollins MelissaORCID, Petrucci Pierre-OlivierORCID, Pilia MauraORCID, Possenti AndreaORCID, Poutanen JuriORCID, Puccetti SimonettaORCID, Ramsey Brian D.ORCID, Rankin JohnORCID, Ratheesh AjayORCID, Roberts Oliver J.ORCID, Romani Roger W.ORCID, Sgró CarmeloORCID, Slane PatrickORCID, Soffitta PaoloORCID, Spandre GloriaORCID, Swartz Douglas A.ORCID, Tamagawa ToruORCID, Taverna RobertoORCID, Tawara Yuzuru, Tennant Allyn F.ORCID, Thomas Nicholas E.ORCID, Tombesi FrancescoORCID, Trois AlessioORCID, Tsygankov Sergey S.ORCID, Turolla RobertoORCID, Vink JaccoORCID, Weisskopf Martin C.ORCID, Wu KinwahORCID, Xie FeiORCID, Zane SilviaORCID
Abstract
Abstract
We present polarization measurements in the 2–8 keV band from blazar 1ES 0229+200, the first extreme high synchrotron peaked source to be observed by the Imaging X-ray Polarimetry Explorer (IXPE). Combining two exposures separated by about two weeks, we find the degree of polarization to be ΠX = 17.9% ± 2.8% at an electric-vector position angle ψ
X = 25.°0 ± 4.°6 using a spectro-polarimetric fit from joint IXPE and XMM-Newton observations. There is no evidence for the polarization degree or angle varying significantly with energy or time on both short timescales (hours) or longer timescales (days). The contemporaneous polarization degree at optical wavelengths was >7× lower, making 1ES 0229+200 the most strongly chromatic blazar yet observed. This high X-ray polarization compared to the optical provides further support that X-ray emission in high-peaked blazars originates in shock-accelerated, energy-stratified electron populations, but is in tension with many recent modeling efforts attempting to reproduce the spectral energy distribution of 1ES 0229+200, which attribute the extremely high energy synchrotron and Compton peaks to Fermi acceleration in the vicinity of strongly turbulent magnetic fields.
Funder
NASA ∣ Marshall Space Flight Center Ministerio de Ciencia e Innovación Agenzia Spaziale Italiana National Science Foundation NASA ∣ Science Mission Directorate EC ∣ Horizon 2020 Framework Programme Academy of Finland
Publisher
American Astronomical Society
Subject
Space and Planetary Science,Astronomy and Astrophysics
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