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Simultaneous space and phase resolved X-ray polarimetry of the Crab Pulsar and Nebula

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arxiv 2207.05573 v2 pith:NXRY7USZ submitted 2022-07-12 astro-ph.HE astro-ph.IM

Simultaneous space and phase resolved X-ray polarimetry of the Crab Pulsar and Nebula

Niccol\`o Bucciantini , Riccardo Ferrazzoli , Matteo Bachetti , John Rankin , Niccol\`o Di Lalla , Carmelo Sgr\`o , Nicola Omodei , Takao Kitaguchi
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Tsunefumi Mizuno Shuichi Gunji Eri Watanabe Luca Baldini Patrick Slane Martin C. Weisskopf Roger W. Romani Andrea Possenti Herman L. Marshall Stefano Silvestri Luigi Pacciani Michela Negro Fabio Muleri Emma de O\~na Wilhelmi Fei Xie Jeremy Heyl Melissa Pesce-Rollins Josephine Wong Maura Pilia Ivan Agudo Lucio A. Antonelli Wayne H. Baumgartner Ronaldo Bellazzini Stefano Bianchi Stephen D. Bongiorno Raffaella Bonino Alessandro Brez Fiamma Capitanio Simone Castellano Elisabetta Cavazzuti Stefano Ciprini Enrico Costa Alessandra De Rosa Ettore Del Monte Laura Di Gesu Alessandro Di Marco Immacolata Donnarumma Victor Doroshenko Michal Dov\v{c}iak Steven R. Ehlert Teruaki Enoto Yuri Evangelista Sergio Fabiani Javier A. Garcia Kiyoshi Hayashida Wataru Iwakiri Svetlana G. Jorstad Vladimir Karas Jeffery J. Kolodziejczak Henric Krawczynski Fabio La Monaca Luca Latronico Ioannis Liodakis Simone Maldera Alberto Manfreda Fr\'ed\'eric Marin Andrea Marinucci Alan P. Marscher Francesco Massaro Giorgio Matt Ikuyuki Mitsuishi C.-Y. Ng Stephen L. O'Dell Chiara Oppedisano Alessandro Papitto George G. Pavlov Abel L. Peirson Matteo Perri Pierre-Olivier Petrucci Juri Poutanen Simonetta Puccetti Brian D. Ramsey Ajay Ratheesh Paolo Soffitta Gloria Spandre Toru Tamagawa Fabrizio Tavecchio Roberto Taverna Yuzuru Tawara Allyn F. Tennant Nicolas E. Thomas Francesco Tombesi Alessio Trois Sergey Tsygankov Roberto Turolla Jacco Vink Kinwah Wu Silvia Zane
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keywords polarisationnebulapulsarcrabpolarisedx-raydegreeenergy
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The Crab pulsar and its nebula are among the most studied astrophysical systems, and constitute one of the most promising environments where high energy processes and particle acceleration can be investigated. They are the only objects for which previous X-ray polarisation has been reported. We present here the first Imaging X-ray Polarimetry Explorer (IXPE) observation of the Crab pulsar and nebula. The total pulsar pulsed emission in the [2-8] keV energy range is unpolarised. Significant polarisation up to 15% is detected only in the core of the main peak. The nebula has a total space integrated polarised degree of 20% and polarisation angle of 145deg. The polarised maps show a large variation in the local polarisation, and regions with polarised degree up to 45-50%. The polarisation pattern suggests a predominantly toroidal magnetic field.

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Cited by 2 Pith papers

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  1. The hitchhiker's guide to the IXPE data analysis

    astro-ph.HE 2026-04 conditional novelty 3.0

    A consolidated IXPE data-analysis recipe, with new post-DU2-anomaly background-rejection thresholds fitted to one observation.

  2. The hitchhiker's guide to the IXPE data analysis

    astro-ph.HE 2026-04 accept novelty 2.0

    A user-oriented guide that collects best practices, data formats, and analysis strategies for extracting polarimetric information from IXPE observations.