船帆座脉冲星风云的 X 射线偏振接近同步辐射极限
高能天体物理现象
2023-03-23 v1
摘要
当相对论性电子与正电子的 outflow 在激波前沿撞击周围超新星遗迹或星际介质时，便形成脉冲星风云。船帆座脉冲星风云由一颗年轻脉冲星（B0833-45，年龄 11 kyr）驱动，位于称为 Vela X 的延展结构内部，而该结构自身处于超新星遗迹之中。先前的 X 射线观测揭示了两条显著的弧，被一条喷流与反喷流所平分。射电地图显示星云外缘具有 60% 的高线偏振度。本文我们报道星云内部的 X 射线观测，其前缘偏振度可超过 60%，接近同步辐射所能产生的理论极限。我们推断，与超新星遗迹的情况不同，脉冲星风云中的电子是在高度均匀的磁场中以极少或无湍流的形势被加速的。
引用
@article{arxiv.2303.12437,
title = {Vela pulsar wind nebula x-rays are polarized to near the synchrotron limit},
author = {Fei Xie and Alessandro Di Marco and Fabio La Monaca and Kuan Liu and Fabio Muleri and Niccolò Bucciantini and Roger W. Romani and Enrico Costa and John Rankin and Paolo Soffitta and Matteo Bachetti and Niccolò Di Lalla and Sergio Fabiani and Riccardo Ferrazzoli and Shuichi Gunji and Luca Latronico and Michela Negro and Nicola Omodei and Maura Pilia and Alessio Trois and Eri Watanabe and Iván Agudo and Lucio A. Antonelli and Luca Baldini and Wayne H. Baumgartner and Ronaldo Bellazzini and Stefano Bianchi and Stephen D. Bongiorno and Raffaella Bonino and Alessandro Brez and Fiamma Capitanio and Simone Castellano and Elisabetta Cavazzuti and Stefano Ciprini and Alessandra De Rosa and Ettore Del Monte and Laura Di Gesu and Immacolata Donnarumma and Victor Doroshenko and Michal Dovčiak and Steven R. Ehlert and Teruaki Enoto and Yuri Evangelista and Javier A. Garcia and Kiyoshi Hayashida and Jeremy Heyl and Wataru Iwakiri and Svetlana G. Jorstad and Vladimir Karas and Takao Kitaguchi and Jeffery J. Kolodziejczak and Henric Krawczynski and Ioannis Liodakis and Simone Maldera and Alberto Manfreda and Frédéric Marin and Andrea Marinucci and Alan P. Marscher and Herman L. Marshall and Francesco Massaro and Giorgio Matt and Ikuyuki Mitsuishi and Tsunefumi Mizuno and C. -Y. Ng and Stephen L. O'Dell and Chiara Oppedisano and Alessandro Papitto and George G. Pavlov and Abel L. Peirson and Matteo Perri and Melissa Pesce-Rollins and Pierre-Olivier Petrucci and Andrea Possenti and Juri Poutanen and Simonetta Puccetti and Brian D. Ramsey and Ajay Ratheesh and Carmelo Sgró and Patrick Slane and Gloria Spandre and Toru Tamagawa and Fabrizio Tavecchio and Roberto Taverna and Yuzuru Tawara and Allyn F. Tennant and Nicolas E. Thomas and Francesco Tombesi and Sergey S. Tsygankov and Roberto Turolla and Jacco Vink and Martin C. Weisskopf and Kinwah Wu and Silvia Zane},
journal= {arXiv preprint arXiv:2303.12437},
year = {2023}
}
备注
27 pages, 8 figures, 4 tables, author's version of the paper accepted for publication in Nature