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Analysis of Crab X-ray Polarization using Deeper IXPE Observations

Fuente: arXiv

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Main Authors:	Wong, Josephine, Mizuno, Tsunefumi, Bucciantini, Niccoló, Romani, Roger W., Yang, Yi-Jung, Liu, Kuan, Deng, Wei, Goya, Kazuho, Xie, Fei, Pilia, Maura, Kaaret, Philip, Weisskopf, Martin C., Silvestri, Stefano, Ng, C. -Y., Chen, Chien-Ting, Agudo, Iván, Antonelli, Lucio A., Bachetti, Matteo, Baldini, Luca, Baumgartner, Wayne H., Bellazzini, Ronaldo, Bianchi, Stefano, Bongiorno, Stephen D., Bonino, Raffaella, Brez, Alessandro, Capitanio, Fiamma, Castellano, Simone, Cavazzuti, Elisabetta, Ciprini, Stefano, Costa, Enrico, De Rosa, Alessandra, Del Monte, Ettore, Di Gesu, Laura, Di Lalla, Niccoló, Di Marco, Alessandro, Donnarumma, Immacolata, Doroshenko, Victor, Dovčiak, Michal, Ehlert, Steven R., Enoto, Teruaki, Evangelista, Yuri, Fabiani, Sergio, Ferrazzoli, Riccardo, Garcia, Javier A., Gunji, Shuichi, Heyl, Jeremy, Iwakiri, Wataru, Jorstad, Svetlana G., Karas, Vladimir, Kislat, Fabian, Kitaguchi, Takao, Kolodziejczak, Jeffery J., Krawczynski, Henric, La Monaca, Fabio, Latronico, Luca, Liodakis, Ioannis, Maldera, Simone, Manfreda, Alberto, Marin, Frédéric, Marinucci, Andrea, Marscher, Alan P., Marshall, Herman L., Massaro, Francesco, Matt, Giorgio, Mitsuishi, Ikuyuki, Muleri, Fabio, Negro, Michela, O'Dell, Stephen L., Omodei, Nicola, Oppedisano, Chiara, Papitto, Alessandro, Pavlov, George G., Peirson, Abel Lawrence, Perri, Matteo, Pesce-Rollins, Melissa, Petrucci, Pierre-Olivier, Possenti, Andrea, Poutanen, Juri, Puccetti, Simonetta, Ramsey, Brian D., Rankin, John, Ratheesh, Ajay, Roberts, Oliver J., Sgró, Carmelo, Slane, Patrick, Soffitta, Paolo, Spandre, Gloria, Swartz, Douglas A., Tamagawa, Toru, Tavecchio, Fabrizio, Taverna, Roberto, Tawara, Yuzuru, Tennant, Allyn F., Thomas, Nicholas E., Tombesi, Francesco, Trois, Alessio, Tsygankov, Sergey, Turolla, Roberto, Vink, Jacco, Wu, Kinwah, Zane, Silvia
Format:	Preprint
Published:	2024
Subjects:	High Energy Astrophysical Phenomena
Online Access:	Acceder al recurso
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author	Wong, Josephine Mizuno, Tsunefumi Bucciantini, Niccoló Romani, Roger W. Yang, Yi-Jung Liu, Kuan Deng, Wei Goya, Kazuho Xie, Fei Pilia, Maura Kaaret, Philip Weisskopf, Martin C. Silvestri, Stefano Ng, C. -Y. Chen, Chien-Ting Agudo, Iván Antonelli, Lucio A. Bachetti, Matteo Baldini, Luca Baumgartner, Wayne H. Bellazzini, Ronaldo Bianchi, Stefano Bongiorno, Stephen D. Bonino, Raffaella Brez, Alessandro Capitanio, Fiamma Castellano, Simone Cavazzuti, Elisabetta Ciprini, Stefano Costa, Enrico De Rosa, Alessandra Del Monte, Ettore Di Gesu, Laura Di Lalla, Niccoló Di Marco, Alessandro Donnarumma, Immacolata Doroshenko, Victor Dovčiak, Michal Ehlert, Steven R. Enoto, Teruaki Evangelista, Yuri Fabiani, Sergio Ferrazzoli, Riccardo Garcia, Javier A. Gunji, Shuichi Heyl, Jeremy Iwakiri, Wataru Jorstad, Svetlana G. Karas, Vladimir Kislat, Fabian Kitaguchi, Takao Kolodziejczak, Jeffery J. Krawczynski, Henric La Monaca, Fabio Latronico, Luca Liodakis, Ioannis Maldera, Simone Manfreda, Alberto Marin, Frédéric Marinucci, Andrea Marscher, Alan P. Marshall, Herman L. Massaro, Francesco Matt, Giorgio Mitsuishi, Ikuyuki Muleri, Fabio Negro, Michela O'Dell, Stephen L. Omodei, Nicola Oppedisano, Chiara Papitto, Alessandro Pavlov, George G. Peirson, Abel Lawrence Perri, Matteo Pesce-Rollins, Melissa Petrucci, Pierre-Olivier Possenti, Andrea Poutanen, Juri Puccetti, Simonetta Ramsey, Brian D. Rankin, John Ratheesh, Ajay Roberts, Oliver J. Sgró, Carmelo Slane, Patrick Soffitta, Paolo Spandre, Gloria Swartz, Douglas A. Tamagawa, Toru Tavecchio, Fabrizio Taverna, Roberto Tawara, Yuzuru Tennant, Allyn F. Thomas, Nicholas E. Tombesi, Francesco Trois, Alessio Tsygankov, Sergey Turolla, Roberto Vink, Jacco Wu, Kinwah Zane, Silvia
author_facet	Wong, Josephine Mizuno, Tsunefumi Bucciantini, Niccoló Romani, Roger W. Yang, Yi-Jung Liu, Kuan Deng, Wei Goya, Kazuho Xie, Fei Pilia, Maura Kaaret, Philip Weisskopf, Martin C. Silvestri, Stefano Ng, C. -Y. Chen, Chien-Ting Agudo, Iván Antonelli, Lucio A. Bachetti, Matteo Baldini, Luca Baumgartner, Wayne H. Bellazzini, Ronaldo Bianchi, Stefano Bongiorno, Stephen D. Bonino, Raffaella Brez, Alessandro Capitanio, Fiamma Castellano, Simone Cavazzuti, Elisabetta Ciprini, Stefano Costa, Enrico De Rosa, Alessandra Del Monte, Ettore Di Gesu, Laura Di Lalla, Niccoló Di Marco, Alessandro Donnarumma, Immacolata Doroshenko, Victor Dovčiak, Michal Ehlert, Steven R. Enoto, Teruaki Evangelista, Yuri Fabiani, Sergio Ferrazzoli, Riccardo Garcia, Javier A. Gunji, Shuichi Heyl, Jeremy Iwakiri, Wataru Jorstad, Svetlana G. Karas, Vladimir Kislat, Fabian Kitaguchi, Takao Kolodziejczak, Jeffery J. Krawczynski, Henric La Monaca, Fabio Latronico, Luca Liodakis, Ioannis Maldera, Simone Manfreda, Alberto Marin, Frédéric Marinucci, Andrea Marscher, Alan P. Marshall, Herman L. Massaro, Francesco Matt, Giorgio Mitsuishi, Ikuyuki Muleri, Fabio Negro, Michela O'Dell, Stephen L. Omodei, Nicola Oppedisano, Chiara Papitto, Alessandro Pavlov, George G. Peirson, Abel Lawrence Perri, Matteo Pesce-Rollins, Melissa Petrucci, Pierre-Olivier Possenti, Andrea Poutanen, Juri Puccetti, Simonetta Ramsey, Brian D. Rankin, John Ratheesh, Ajay Roberts, Oliver J. Sgró, Carmelo Slane, Patrick Soffitta, Paolo Spandre, Gloria Swartz, Douglas A. Tamagawa, Toru Tavecchio, Fabrizio Taverna, Roberto Tawara, Yuzuru Tennant, Allyn F. Thomas, Nicholas E. Tombesi, Francesco Trois, Alessio Tsygankov, Sergey Turolla, Roberto Vink, Jacco Wu, Kinwah Zane, Silvia
contents	We present Crab X-ray polarization measurements using IXPE data with a total exposure of 300ks, three times more than the initial 2022 discovery paper. Polarization is detected in three times more pulsar phase bins, revealing an S-shaped $+40^\circ$ polarization angle sweep in the main pulse and ${>}1σ$ departures from the OPTIMA optical polarization in both pulses, suggesting different radiation mechanisms or sites for the polarized emission at the two wavebands. Our polarization map of the inner nebula reveals a toroidal magnetic field, as seen in prior IXPE analyses. Along the southern jet, the magnetic field orientation relative to the jet axis changes from perpendicular to parallel and the polarization degree decreases by ${\sim}6\%$. These observations may be explained by kink instabilities along the jet or a collision with a dense, jet-deflecting medium at the tip. Using spectropolarimetric analysis, we find asymmetric polarization in the four quadrants of the inner nebula, as expected for a toroidal field geometry, and a spatial correlation between polarization degree and photon index.
format	Preprint
id	arxiv_https___arxiv_org_abs_2407_12779
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Analysis of Crab X-ray Polarization using Deeper IXPE Observations Wong, Josephine Mizuno, Tsunefumi Bucciantini, Niccoló Romani, Roger W. Yang, Yi-Jung Liu, Kuan Deng, Wei Goya, Kazuho Xie, Fei Pilia, Maura Kaaret, Philip Weisskopf, Martin C. Silvestri, Stefano Ng, C. -Y. Chen, Chien-Ting Agudo, Iván Antonelli, Lucio A. Bachetti, Matteo Baldini, Luca Baumgartner, Wayne H. Bellazzini, Ronaldo Bianchi, Stefano Bongiorno, Stephen D. Bonino, Raffaella Brez, Alessandro Capitanio, Fiamma Castellano, Simone Cavazzuti, Elisabetta Ciprini, Stefano Costa, Enrico De Rosa, Alessandra Del Monte, Ettore Di Gesu, Laura Di Lalla, Niccoló Di Marco, Alessandro Donnarumma, Immacolata Doroshenko, Victor Dovčiak, Michal Ehlert, Steven R. Enoto, Teruaki Evangelista, Yuri Fabiani, Sergio Ferrazzoli, Riccardo Garcia, Javier A. Gunji, Shuichi Heyl, Jeremy Iwakiri, Wataru Jorstad, Svetlana G. Karas, Vladimir Kislat, Fabian Kitaguchi, Takao Kolodziejczak, Jeffery J. Krawczynski, Henric La Monaca, Fabio Latronico, Luca Liodakis, Ioannis Maldera, Simone Manfreda, Alberto Marin, Frédéric Marinucci, Andrea Marscher, Alan P. Marshall, Herman L. Massaro, Francesco Matt, Giorgio Mitsuishi, Ikuyuki Muleri, Fabio Negro, Michela O'Dell, Stephen L. Omodei, Nicola Oppedisano, Chiara Papitto, Alessandro Pavlov, George G. Peirson, Abel Lawrence Perri, Matteo Pesce-Rollins, Melissa Petrucci, Pierre-Olivier Possenti, Andrea Poutanen, Juri Puccetti, Simonetta Ramsey, Brian D. Rankin, John Ratheesh, Ajay Roberts, Oliver J. Sgró, Carmelo Slane, Patrick Soffitta, Paolo Spandre, Gloria Swartz, Douglas A. Tamagawa, Toru Tavecchio, Fabrizio Taverna, Roberto Tawara, Yuzuru Tennant, Allyn F. Thomas, Nicholas E. Tombesi, Francesco Trois, Alessio Tsygankov, Sergey Turolla, Roberto Vink, Jacco Wu, Kinwah Zane, Silvia High Energy Astrophysical Phenomena We present Crab X-ray polarization measurements using IXPE data with a total exposure of 300ks, three times more than the initial 2022 discovery paper. Polarization is detected in three times more pulsar phase bins, revealing an S-shaped $+40^\circ$ polarization angle sweep in the main pulse and ${>}1σ$ departures from the OPTIMA optical polarization in both pulses, suggesting different radiation mechanisms or sites for the polarized emission at the two wavebands. Our polarization map of the inner nebula reveals a toroidal magnetic field, as seen in prior IXPE analyses. Along the southern jet, the magnetic field orientation relative to the jet axis changes from perpendicular to parallel and the polarization degree decreases by ${\sim}6\%$. These observations may be explained by kink instabilities along the jet or a collision with a dense, jet-deflecting medium at the tip. Using spectropolarimetric analysis, we find asymmetric polarization in the four quadrants of the inner nebula, as expected for a toroidal field geometry, and a spatial correlation between polarization degree and photon index.
title	Analysis of Crab X-ray Polarization using Deeper IXPE Observations
topic	High Energy Astrophysical Phenomena
url	https://arxiv.org/abs/2407.12779