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Polarized x-rays from a magnetar.
Taverna, Roberto; Turolla, Roberto; Muleri, Fabio; Heyl, Jeremy; Zane, Silvia; Baldini, Luca; González-Caniulef, Denis; Bachetti, Matteo; Rankin, John; Caiazzo, Ilaria; Di Lalla, Niccolò; Doroshenko, Victor; Errando, Manel; Gau, Ephraim; Kirmizibayrak, Demet; Krawczynski, Henric; Negro, Michela; Ng, Mason; Omodei, Nicola; Possenti, Andrea; Tamagawa, Toru; Uchiyama, Keisuke; Weisskopf, Martin C; Agudo, Ivan; Antonelli, Lucio A; Baumgartner, Wayne H; Bellazzini, Ronaldo; Bianchi, Stefano; Bongiorno, Stephen D; Bonino, Raffaella; Brez, Alessandro; Bucciantini, Niccolò; Capitanio, Fiamma; Castellano, Simone; Cavazzuti, Elisabetta; Ciprini, Stefano; Costa, Enrico; De Rosa, Alessandra; Del Monte, Ettore; Di Gesu, Laura; Di Marco, Alessandro; Donnarumma, Immacolata; Dovciak, Michal; Ehlert, Steven R; Enoto, Teruaki; Evangelista, Yuri; Fabiani, Sergio; Ferrazzoli, Riccardo; Garcia, Javier A; Gunji, Shuichi.
  • Taverna R; Department of Physics and Astronomy, University of Padova, I-35131 Padova, Italy.
  • Turolla R; Department of Physics and Astronomy, University of Padova, I-35131 Padova, Italy.
  • Muleri F; Mullard Space Science Laboratory, University College London, Holmbury St Mary Dorking RH5 6NT, UK.
  • Heyl J; Istituto di Astrofisica e Planetologia Spaziali, Istituto Nazionale di Astrofisica (INAF), I-00133 Roma, Italy.
  • Zane S; Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1, Canada.
  • Baldini L; Mullard Space Science Laboratory, University College London, Holmbury St Mary Dorking RH5 6NT, UK.
  • González-Caniulef D; Dipartimento di Fisica Enrico Fermi, Università di Pisa, I-56127 Pisa, Italy.
  • Bachetti M; Istituto Nazionale di Fisica Nucleare (INFN) Sezione di Pisa, I-56127 Pisa, Italy.
  • Rankin J; Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1, Canada.
  • Caiazzo I; Osservatorio Astronomico di Cagliari, INAF, I-09047 Selargius, Italy.
  • Di Lalla N; Istituto di Astrofisica e Planetologia Spaziali, Istituto Nazionale di Astrofisica (INAF), I-00133 Roma, Italy.
  • Doroshenko V; Theoretical AstroPhysics Including Relativity and Cosmology, Caltech, Pasadena, CA 91125, USA.
  • Errando M; Deparment of Physics and Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Stanford, CA 94305, USA.
  • Gau E; Institut für Astronomie und Astrophysik, Universität Tübingen, 72076 Tübingen, Germany.
  • Kirmizibayrak D; Physics Department and McDonnell Center for the Space Sciences, Washington University, St. Louis, MO 63130, USA.
  • Krawczynski H; Physics Department and McDonnell Center for the Space Sciences, Washington University, St. Louis, MO 63130, USA.
  • Negro M; Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1, Canada.
  • Ng M; Physics Department and McDonnell Center for the Space Sciences, Washington University, St. Louis, MO 63130, USA.
  • Omodei N; Center for Space Sciences and Technology, University of Maryland, Baltimore, MD 21250, USA.
  • Possenti A; NASA Goddard Space Flight Center (GSFC), Greenbelt, MD 20771, USA.
  • Tamagawa T; Center for Research and Exploration in Space Science and Technology, NASA/GSFC, Greenbelt, MD 20771, USA.
  • Uchiyama K; Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
  • Weisskopf MC; Deparment of Physics and Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Stanford, CA 94305, USA.
  • Agudo I; Osservatorio Astronomico di Cagliari, INAF, I-09047 Selargius, Italy.
  • Antonelli LA; RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
  • Baumgartner WH; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
  • Bellazzini R; Department of Physics, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan.
  • Bianchi S; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
  • Bongiorno SD; Department of Physics, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan.
  • Bonino R; NASA Marshall Space Flight Center (MSFC), Huntsville, AL 35812, USA.
  • Brez A; Instituto de Astrofísica de Andalucía, 18008 Granada, Spain.
  • Bucciantini N; Osservatorio Astronomico di Roma, INAF, 00040 Monte Porzio Catone, Italy.
  • Capitanio F; Space Science Data Center (SSDC), Agenzia Spaziale Italiana (ASI), 00133 Roma, Italy.
  • Castellano S; NASA Marshall Space Flight Center (MSFC), Huntsville, AL 35812, USA.
  • Cavazzuti E; Istituto Nazionale di Fisica Nucleare (INFN) Sezione di Pisa, I-56127 Pisa, Italy.
  • Ciprini S; Dipartimento di Matematica e Fisica, Università degli Studi Roma Tre, 00146 Roma, Italy.
  • Costa E; NASA Marshall Space Flight Center (MSFC), Huntsville, AL 35812, USA.
  • De Rosa A; INFN Sezione di Torino, 10125 Torino, Italy.
  • Del Monte E; Dipartimento di Fisica, Università degli Studi di Torino, 10125 Torino, Italy.
  • Di Gesu L; Istituto Nazionale di Fisica Nucleare (INFN) Sezione di Pisa, I-56127 Pisa, Italy.
  • Di Marco A; Osservatorio Astrofisico di Arcetri, INAF, 50125 Firenze, Italy.
  • Donnarumma I; Dipartimento di Fisica e Astronomia, Università degli Studi di Firenze, 50019 Sesto Fiorentino, Italy.
  • Dovciak M; INFN Sezione di Firenze, 50019 Sesto Fiorentino, Italy.
  • Ehlert SR; Istituto di Astrofisica e Planetologia Spaziali, Istituto Nazionale di Astrofisica (INAF), I-00133 Roma, Italy.
  • Enoto T; Istituto Nazionale di Fisica Nucleare (INFN) Sezione di Pisa, I-56127 Pisa, Italy.
  • Evangelista Y; ASI, 00133 Roma, Italy.
  • Fabiani S; Space Science Data Center (SSDC), Agenzia Spaziale Italiana (ASI), 00133 Roma, Italy.
  • Ferrazzoli R; INFN Sezione di Roma Tor Vergata, 00133 Roma, Italy.
  • Garcia JA; Istituto di Astrofisica e Planetologia Spaziali, Istituto Nazionale di Astrofisica (INAF), I-00133 Roma, Italy.
  • Gunji S; Istituto di Astrofisica e Planetologia Spaziali, Istituto Nazionale di Astrofisica (INAF), I-00133 Roma, Italy.
Science ; 378(6620): 646-650, 2022 11 11.
Article en En | MEDLINE | ID: mdl-36356124
ABSTRACT
Magnetars are neutron stars with ultrastrong magnetic fields, which can be observed in x-rays. Polarization measurements could provide information on their magnetic fields and surface properties. We observed polarized x-rays from the magnetar 4U 0142+61 using the Imaging X-ray Polarimetry Explorer and found a linear polarization degree of 13.5 ± 0.8% averaged over the 2- to 8-kilo-electron volt band. The polarization changes with energy The degree is 15.0 ± 1.0% at 2 to 4 kilo-electron volts, drops below the instrumental sensitivity ~4 to 5 kilo-electron volts, and rises to 35.2 ± 7.1% at 5.5 to 8 kilo-electron volts. The polarization angle also changes by 90° at ~4 to 5 kilo-electron volts. These results are consistent with a model in which thermal radiation from the magnetar surface is reprocessed by scattering off charged particles in the magnetosphere.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2022 Tipo del documento: Article
Texto completo
Imprimir
XML
PubMed Links
Search on Google

Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2022 Tipo del documento: Article