The Polarized Cosmic Hand: IXPE Observations of PSR B1509-58/MSH 15-52
Roger W. Romani,Josephine Wong,Niccolo Di Lalla,Nicola Omodei,Fei Xie,C. -Y. Ng,Riccardo Ferrazzoli,Alessandro Di Marco,Niccolo Bucciantini,Maura Pilia,Patrick Slane,Martin C. Weisskopf,Simon Johnston,Marta Burgay,Deng Wei,Yi-Jung Yang,Shumeng Zhang,Lucio A. Antonelli,Matteo Bachetti,Luca Baldini,Wayne H. Baumgartner,Ronaldo Bellazzini,Stefano Bianchi,Stephen D. Bongiorno,Raffaella Bonino,Alessandro Brez,Fiamma Capitanio,Simone Castellano,Elisabetta Cavazzuti,Chien-Ting Chen,Nicolo Cibrario,Stefano Ciprini,Enrico Costa,Alessandra De Rosa,Ettore Del Monte,Laura Di Gesu,Immacolata Donnarumma,Victor Doroshenko,Michal Dovciak,Steven R. Ehlert,Teruaki Enoto,Yuri Evangelista,Sergio Fabiani,Javier A. Garcia,Shuichi Gunji,Kiyoshi Hayashida,Jeremy Heyl,Wataru Iwakiri,Ioannis Liodakis,Philip Kaaret,Vladimir Karas,Dawoon E. Kim,Takao Kitaguchi,Jeffery J. Kolodziejczak,Henric Krawczynski,Fabio La Monaca,Luca Latronico,Grzegorz Madejski,Simone Maldera,Alberto Manfreda,Frederic Marin,Andrea Marinucci,Alan P. Marscher,Herman L. Marshall,Francesco Massaro,Giorgio Matt,Riccardo Middei,Ikuyuki Mitsuishi,Tsunefumi Mizuno,Fabio Muleri,Michela Negro,Stephen L. O'Dell,Chiara Oppedisano,Luigi Pacciani,Alessandro Papitto,George G. Pavlov,Matteo Perri,Melissa Pesce-Rollins,Pierre-Olivier Petrucci,Andrea Possenti,Juri Poutanen,Simonetta Puccetti,Brian D. Ramsey,John Rankin,Ajay Ratheesh,Oliver J. Roberts,Carmelo Sgro,Paolo Soffitta,Gloria Spandre,Douglas A. Swartz,Toru Tamagawa,Fabrizio Tavecchio,Roberto Taverna,Yuzuru Tawara,Allyn F. Tennant,Nicholas E. Thomas,Francesco Tombesi,Alessio Trois,Sergey Tsygankov,Roberto Turolla,Jacco Vink,Kinwah Wu,Silvia Zane
The Astrophysical Journal（2023）
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Abstract
We describe IXPE polarization observations of the pulsar wind nebula (PWN) MSH 15-5(2), the "Cosmic Hand." We find X-ray polarization across the PWN, with B-field vectors generally aligned with filamentary X-ray structures. High-significance polarization is seen in arcs surrounding the pulsar and toward the end of the "jet," with polarization degree PD > 70%, thus approaching the maximum allowed synchrotron value. In contrast, the base of the jet has lower polarization, indicating a complex magnetic field at significant angle to the jet axis. We also detect significant polarization from PSR B1509-58 itself. Although only the central pulse phase bin of the pulse has high individual significance, flanking bins provide lower-significance detections and, in conjunction with the X-ray image and radio polarization, can be used to constrain rotating vector model solutions for the pulsar geometry.
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cosmic hand,ixpe observations
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