article published yes Roberto Taverna author Roberto Turolla author Fabio Muleri author Jeremy Heyl author Silvia Zane author Luca Baldini author Denis González-Caniulef author Matteo Bachetti author John Rankin author Ilaria Caiazzo author 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d0000-0002-4770-5388 Niccolò Di Lalla author Victor Doroshenko author Manel Errando author Ephraim Gau author Demet Kırmızıbayrak author Henric Krawczynski author Michela Negro author Mason Ng author Nicola Omodei author Andrea Possenti author Toru Tamagawa author Keisuke Uchiyama author Martin C. Weisskopf author Ivan Agudo author Lucio A. Antonelli author Wayne H. Baumgartner author Ronaldo Bellazzini author Stefano Bianchi author Stephen D. Bongiorno author Raffaella Bonino author Alessandro Brez author Niccolò Bucciantini author Fiamma Capitanio author Simone Castellano author Elisabetta Cavazzuti author Stefano Ciprini author Enrico Costa author Alessandra De Rosa author Ettore Del Monte author Laura Di Gesu author Alessandro Di Marco author Immacolata Donnarumma author Michal Dovčiak author Steven R. Ehlert author Teruaki Enoto author Yuri Evangelista author Sergio Fabiani author Riccardo Ferrazzoli author Javier A. Garcia author Shuichi Gunji author Kiyoshi Hayashida author Wataru Iwakiri author Svetlana G. Jorstad author Vladimir Karas author Takao Kitaguchi author Jeffery J. Kolodziejczak author Fabio La Monaca author Luca Latronico author Ioannis Liodakis author Simone Maldera author Alberto Manfreda author Frédéric Marin author Andrea Marinucci author Alan P. Marscher author Herman L. Marshall author Giorgio Matt author Ikuyuki Mitsuishi author Tsunefumi Mizuno author Stephen C.-Y. Ng author Stephen L. O’Dell author Chiara Oppedisano author Alessandro Papitto author George G. Pavlov author Abel L. Peirson author Matteo Perri author Melissa Pesce-Rollins author Maura Pilia author Juri Poutanen author Simonetta Puccetti author Brian D. Ramsey author Ajay Ratheesh author Roger W. Romani author Carmelo Sgrò author Patrick Slane author Paolo Soffitta author Gloria Spandre author Fabrizio Tavecchio author Yuzuru Tawara author Allyn F. Tennant author Nicholas E. Thomas author Francesco Tombesi author Alessio Trois author Sergey S. Tsygankov author Jacco Vink author Kinwah Wu author Fei Xie author 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. American Association for the Advancement of Science2022 eng Multidisciplinary 0036-8075 1095-9203 2205.0889810.1126/science.add0080 3786620646-650 yes Taverna R, Turolla R, Muleri F, et al. Polarized x-rays from a magnetar. <i>Science</i>. 2022;378(6620):646-650. doi:<a href="https://doi.org/10.1126/science.add0080">10.1126/science.add0080</a> Taverna, Roberto, Roberto Turolla, Fabio Muleri, Jeremy Heyl, Silvia Zane, Luca Baldini, Denis González-Caniulef, et al. “Polarized X-Rays from a Magnetar.” <i>Science</i>. American Association for the Advancement of Science, 2022. <a href="https://doi.org/10.1126/science.add0080">https://doi.org/10.1126/science.add0080</a>. R. Taverna <i>et al.</i>, “Polarized x-rays from a magnetar,” <i>Science</i>, vol. 378, no. 6620. American Association for the Advancement of Science, pp. 646–650, 2022. Taverna, R., Turolla, R., Muleri, F., Heyl, J., Zane, S., Baldini, L., … Xie, F. (2022). Polarized x-rays from a magnetar. <i>Science</i>. American Association for the Advancement of Science. <a href="https://doi.org/10.1126/science.add0080">https://doi.org/10.1126/science.add0080</a> R. Taverna, R. Turolla, F. Muleri, J. Heyl, S. Zane, L. Baldini, D. González-Caniulef, M. Bachetti, J. Rankin, I. Caiazzo, N. Di Lalla, V. Doroshenko, M. Errando, E. Gau, D. Kırmızıbayrak, H. Krawczynski, M. Negro, M. Ng, N. Omodei, A. Possenti, T. Tamagawa, K. Uchiyama, M.C. Weisskopf, I. Agudo, L.A. Antonelli, W.H. Baumgartner, R. Bellazzini, S. Bianchi, S.D. Bongiorno, R. Bonino, A. Brez, N. Bucciantini, F. Capitanio, S. Castellano, E. Cavazzuti, S. Ciprini, E. Costa, A. De Rosa, E. Del Monte, L. Di Gesu, A. Di Marco, I. Donnarumma, M. Dovčiak, S.R. Ehlert, T. Enoto, Y. Evangelista, S. Fabiani, R. Ferrazzoli, J.A. Garcia, S. Gunji, K. Hayashida, W. Iwakiri, S.G. Jorstad, V. Karas, T. Kitaguchi, J.J. Kolodziejczak, F. La Monaca, L. Latronico, I. Liodakis, S. Maldera, A. Manfreda, F. Marin, A. Marinucci, A.P. Marscher, H.L. Marshall, G. Matt, I. Mitsuishi, T. Mizuno, S.C.-Y. Ng, S.L. O’Dell, C. Oppedisano, A. Papitto, G.G. Pavlov, A.L. Peirson, M. Perri, M. Pesce-Rollins, M. Pilia, J. Poutanen, S. Puccetti, B.D. Ramsey, A. Ratheesh, R.W. Romani, C. Sgrò, P. Slane, P. Soffitta, G. Spandre, F. Tavecchio, Y. Tawara, A.F. Tennant, N.E. Thomas, F. Tombesi, A. Trois, S.S. Tsygankov, J. Vink, K. Wu, F. Xie, Science 378 (2022) 646–650. Taverna R, Turolla R, Muleri F, Heyl J, Zane S, Baldini L, González-Caniulef D, Bachetti M, Rankin J, Caiazzo I, Di Lalla N, Doroshenko V, Errando M, Gau E, Kırmızıbayrak D, Krawczynski H, Negro M, Ng M, Omodei N, Possenti A, Tamagawa T, Uchiyama K, Weisskopf MC, Agudo I, Antonelli LA, Baumgartner WH, Bellazzini R, Bianchi S, Bongiorno SD, Bonino R, Brez A, Bucciantini N, Capitanio F, Castellano S, Cavazzuti E, Ciprini S, Costa E, De Rosa A, Del Monte E, Di Gesu L, Di Marco A, Donnarumma I, Dovčiak M, Ehlert SR, Enoto T, Evangelista Y, Fabiani S, Ferrazzoli R, Garcia JA, Gunji S, Hayashida K, Iwakiri W, Jorstad SG, Karas V, Kitaguchi T, Kolodziejczak JJ, La Monaca F, Latronico L, Liodakis I, Maldera S, Manfreda A, Marin F, Marinucci A, Marscher AP, Marshall HL, Matt G, Mitsuishi I, Mizuno T, Ng SC-Y, O’Dell SL, Oppedisano C, Papitto A, Pavlov GG, Peirson AL, Perri M, Pesce-Rollins M, Pilia M, Poutanen J, Puccetti S, Ramsey BD, Ratheesh A, Romani RW, Sgrò C, Slane P, Soffitta P, Spandre G, Tavecchio F, Tawara Y, Tennant AF, Thomas NE, Tombesi F, Trois A, Tsygankov SS, Vink J, Wu K, Xie F. 2022. Polarized x-rays from a magnetar. Science. 378(6620), 646–650. Taverna, Roberto, et al. “Polarized X-Rays from a Magnetar.” <i>Science</i>, vol. 378, no. 6620, American Association for the Advancement of Science, 2022, pp. 646–50, doi:<a href="https://doi.org/10.1126/science.add0080">10.1126/science.add0080</a>. 152052024-03-26T09:51:30Z2024-04-02T07:17:25Z