Simultaneous space and phase resolved X-ray polarimetry of the Crab pulsar and nebula
Simultaneous space and phase resolved X-ray polarimetry of the Crab pulsar and nebula
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DOI：
10.1038/s41550-023-01936-8
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发表时间：
2022-07
期刊：
影响因子：
14.1
通讯作者：
N. Bucciantini;R. Ferrazzoli;M. Bachetti;J. Rankin;N. Di Lalla;C. Sgro’;N. Omodei;T. Kitaguchi;T. Mizuno;S. Gunji;E. Watanabe;L. Baldini;P. Slane;M. Weisskopf;R. Romani;A. Possenti;H. Marshall;S. Silvestri;L. Pacciani;M. Negro;F. Muleri;E. de Oña Wilhelmi;F. Xie;J. Heyl;M. Pesce-Rollins;Josephine Wong;M. Pilia;I. Agudo;L. A. Antonelli;W. Baumgartner;R. Bellazzini;S. Bianchi;S. Bongiorno;R. Bonino;A. Brez;F. Capitanio;S. Castellano;E. Cavazzuti;Chien-Ting J. Chen;S. Ciprini;E. Costa;A. De Rosa;E. Del Monte;L. Di Gesu;A. Di Marco;I. Donnarumma;V. Doroshenko;M. Dovčiak;S. Ehlert;T. Enoto;Y. Evangelista;S. Fabiani;Javier A. García;K. Hayashida;W. Iwakiri;S. Jorstad;P. Kaaret;V. Karas;F. Kislat;J. Kolodziejczak;H. Krawczynski;F. La Monaca;L. Latronico;I. Liodakis;S. Maldera;A. Manfreda;F. Marin;A. Marinucci;A. Marscher;F. Massaro;G. Matt;I. Mitsuishi;C. Ng;S. O’Dell;C. Oppedisano;A. Papitto;G. Pavlov;A. L. Peirson;M. Perri;P. Petrucci;J. Poutanen;S. Puccetti;B. Ramsey;A. Ratheesh;O. Roberts;P. Soffitta;G. Spandre;D. Swartz;T. Tamagawa;F. Tavecchio;R. Taverna;Y. Tawara;A. Tennant;N. Thomas;F. Tombesi;A. Trois;S. Tsygankov;R. Turolla;J. Vink;K. Wu;S. Zane
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文献类型：
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作者：
N. Bucciantini;R. Ferrazzoli;M. Bachetti;J. Rankin;N. Di Lalla;C. Sgro’;N. Omodei;T. Kitaguchi;T. Mizuno;S. Gunji;E. Watanabe;L. Baldini;P. Slane;M. Weisskopf;R. Romani;A. Possenti;H. Marshall;S. Silvestri;L. Pacciani;M. Negro;F. Muleri;E. de Oña Wilhelmi;F. Xie;J. Heyl;M. Pesce-Rollins;Josephine Wong;M. Pilia;I. Agudo;L. A. Antonelli;W. Baumgartner;R. Bellazzini;S. Bianchi;S. Bongiorno;R. Bonino;A. Brez;F. Capitanio;S. Castellano;E. Cavazzuti;Chien-Ting J. Chen;S. Ciprini;E. Costa;A. De Rosa;E. Del Monte;L. Di Gesu;A. Di Marco;I. Donnarumma;V. Doroshenko;M. Dovčiak;S. Ehlert;T. Enoto;Y. Evangelista;S. Fabiani;Javier A. García;K. Hayashida;W. Iwakiri;S. Jorstad;P. Kaaret;V. Karas;F. Kislat;J. Kolodziejczak;H. Krawczynski;F. La Monaca;L. Latronico;I. Liodakis;S. Maldera;A. Manfreda;F. Marin;A. Marinucci;A. Marscher;F. Massaro;G. Matt;I. Mitsuishi;C. Ng;S. O’Dell;C. Oppedisano;A. Papitto;G. Pavlov;A. L. Peirson;M. Perri;P. Petrucci;J. Poutanen;S. Puccetti;B. Ramsey;A. Ratheesh;O. Roberts;P. Soffitta;G. Spandre;D. Swartz;T. Tamagawa;F. Tavecchio;R. Taverna;Y. Tawara;A. Tennant;N. Thomas;F. Tombesi;A. Trois;S. Tsygankov;R. Turolla;J. Vink;K. Wu;S. Zane
蟹状星云脉冲星及其星云是研究最多的天体物理系统之一，是研究高能过程和粒子加速的最有前途的环境之一。它们是过去唯一被探测到显著X射线偏振的天体。在这里，我们介绍了成像X射线偏振探测器（IXPE）的螃蟹脉冲星和星云的观测。脉冲星在[2-8] keV能量范围内的脉冲辐射是非偏振的。在主峰的核心中检测到高达15%的显著偏振。该星云的总空间积分偏振度为20%，偏振角为145°。偏振图显示了局部偏振的大变化，以及偏振度高达45- 50%的区域。极化模式表明主要是环形磁场。我们对脉冲星的研究结果与大多数内磁层模型不一致，并表明辐射更可能来自风区。对于该星云，偏振图显示了一种不规则的湍流分布，与强度无关，与数值模型的简单预期相反。
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 significant X-ray polarization was detected in the past. Here we present the 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 unpolarized. Significant polarization up to 15% is detected in the core of the main peak. The nebula has a total space integrated polarized degree of 20% and polarization angle of 145°. The polarized maps show a large variation in the local polarization, and regions with a polarized degree up to 45–50%. The polarization pattern suggests a predominantly toroidal magnetic field. Our findings for the pulsar are inconsistent with most inner magnetospheric models, and suggest emission is more likely to come from the wind region. For the nebula, the polarization map suggests a patchy distribution of turbulence, uncorrelated with the intensity, in contrast with simple expectations from numerical models.