Pulsar-wind-nebula-powered Galactic center X-ray filament G0.13–0.11
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Published:2024-05-24
Issue:
Volume:686
Page:A14
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ISSN:0004-6361
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Container-title:Astronomy & Astrophysics
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language:
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Short-container-title:A&A
Author:
Churazov EugeneORCID, Khabibullin IldarORCID, Barnouin ThibaultORCID, Bucciantini NiccolòORCID, Costa EnricoORCID, Di Gesu LauraORCID, Di Marco AlessandroORCID, Ferrazzoli RiccardoORCID, Forman WilliamORCID, Kaaret Philip, Kim Dawoon E.ORCID, Kolodziejczak Jeffery J., Kraft Ralph, Marin Frédéric, Matt GiorgioORCID, Negro MichelaORCID, Romani Roger W., Silvestri StefanoORCID, Soffitta PaoloORCID, Sunyaev RashidORCID, Svoboda JiriORCID, Vikhlinin AlexeyORCID, Weisskopf Martin C., Xie Fei, Agudo IvánORCID, Antonelli Lucio A., Bachetti MatteoORCID, Baldini Luca, Baumgartner Wayne H., Bellazzini Ronaldo, Bianchi StefanoORCID, Bongiorno Stephen D., Bonino RaffaellaORCID, Brez Alessandro, Capitanio Fiamma, Castellano Simone, Cavazzuti ElisabettaORCID, Chen Chien-Ting, Ciprini Stefano, De Rosa Alessandra, Del Monte Ettore, Di Lalla Niccolò, Donnarumma Immacolata, Doroshenko Victor, Dovčiak MichalORCID, Ehlert Steven R., Enoto Teruaki, Evangelista Yuri, Fabiani Sergio, García Javier A., Gunji ShuichiORCID, Hayashida Kiyoshi, Heyl JeremyORCID, Iwakiri Wataru, Jorstad Svetlana G., Karas VladimirORCID, Kislat FabianORCID, Kitaguchi Takao, Krawczynski HenricORCID, La Monaca FabioORCID, Latronico Luca, Liodakis IoannisORCID, Maldera SimoneORCID, Manfreda Alberto, Marinucci Andrea, Marscher Alan P.ORCID, Marshall Herman L.ORCID, Massaro Francesco, Mitsuishi Ikuyuki, Mizuno Tsunefumi, Muleri Fabio, Ng Chi-Yung, O’Dell Stephen L.ORCID, Omodei NicolaORCID, Oppedisano Chiara, Papitto Alessandro, Pavlov George G.ORCID, Peirson Abel L., Perri MatteoORCID, Pesce-Rollins Melissa, Petrucci Pierre-OlivierORCID, Pilia Maura, Possenti AndreaORCID, Poutanen JuriORCID, Puccetti SimonettaORCID, Ramsey Brian D., Rankin JohnORCID, Ratheesh Ajay, Roberts Oliver J., Sgrò CarmeloORCID, Slane PatrickORCID, Spandre Gloria, Swartz Douglas A.ORCID, Tamagawa ToruORCID, Tavecchio Fabrizio, Taverna RobertoORCID, Tawara Yuzuru, Tennant Allyn F., Thomas Nicholas E., Tombesi FrancescoORCID, Trois Alessio, Tsygankov Sergey S.ORCID, Turolla RobertoORCID, Vink Jacco, Wu KinwahORCID, Zane SilviaORCID
Abstract
We report the discovery of X-ray polarization from the X-ray-bright filament G0.13−0.11 in the Galactic center (GC) region. This filament features a bright, hard X-ray source that is most plausibly a pulsar wind nebula (PWN) and an extended and structured diffuse component. Combining the polarization signal from IXPE with the imaging/spectroscopic data from Chandra, we find that X-ray emission of G0.13−0.11 is highly polarized PD = 57(±18)% in the 3−6 keV band, while the polarization angle is PA = 21 ° ( ± 9 ° ). This high degree of polarization proves the synchrotron origin of the X-ray emission from G0.13−0.11. In turn, the measured polarization angle implies that the X-ray emission is polarized approximately perpendicular to a sequence of nonthermal radio filaments that may be part of the GC Radio Arc. The magnetic field on the order of 100 μG appears to be preferentially ordered along the filaments. The above field strength is the fiducial value that makes our model self-consistent, while the other conclusions are largely model independent.
Cited by
2 articles.
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