弱磁化中子星 X 射线双星 GS 1826-238 在高软态下的偏振性质
高能天体物理现象
2023-02-08 v1 太阳与恒星天体物理
摘要
2021 年 12 月 9 日成像 X 射线偏振探测器（IXPE）的发射为 X 射线天文学打开了一扇新窗口。我们在此报告对弱磁化中子星 GS 1826-238 的首次 IXPE 观测结果，观测于 2022 年 3 月 29–31 日进行，当时该源处于高软态。在 IXPE 的 2–8 keV 能段内，获得了线偏振度 1.3% 的上限（99.73% 置信水平）。INTEGRAL 与 NICER 的协同观测与 IXPE 同时开展。由宽波段能谱拟合得到的光谱参数被用作考虑不同可能 X 射线发射区几何形状的蒙特卡洛模拟的输入。将 IXPE 上限与这些模拟相比较，我们可对 GS 1826-238 的几何形状与倾角给出约束。
引用
@article{arxiv.2212.12472,
title = {Polarization properties of the weakly magnetized neutron star X-ray binary GS 1826-238 in the high soft state},
author = {Fiamma Capitanio and Sergio Fabiani and Andrea Gnarini and Francesco Ursini and Carlo Ferrigno and Giorgio Matt and Juri Poutanen and Massimo Cocchi and Romana Mikusincova and Ruben Farinelli and Stefano Bianchi and Jari J. E. Kajava and Fabio Muleri and Celia Sanchez-Fernandez and Paolo Soffitta and Kinwah Wu and Ivan Agudo and Lucio A. Antonelli and Matteo Bachetti and Luca Baldini and Wayne H. Baumgartner and Ronaldo Bellazzini and Stephen D. Bongiorno and Raffaella Bonino and Alessandro Brez and Niccoló Bucciantini and Simone Castellano and Elisabetta Cavazzuti and Stefano Ciprini and Enrico Costa and Alessandra De Rosa and Ettore Del Monte and Laura Di Gesu and Niccolo Di Lalla and Alessandro Di Marco and Immacolata Donnarumma and Victor Doroshenko and Michal Dovciak and Steven R. Ehlert and Teruaki Enoto and Yuri Evangelista and Riccardo Ferrazzoli and Javier A. Garcia and Shuichi Gunji 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 Fabio La Monaca and Luca Latronico and Ioannis Liodakis and Simone Maldera and Alberto Manfreda and Fréedèric Marin and Andrea Marinucci and Alan P. Marscher and Herman L. Marshall and Ikuyuki Mitsuishi and Tsunefumi Mizuno and C. -Y. Ng and Stephen L. O'Dell and Nicola Omodei 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 Maura Pilia and Andrea Possenti and Simonetta Puccetti and Brian D. Ramsey and John Rankin and Ajay Ratheesh and Roger W. Romani and Carmelo Sgrò and Patrick Slane and Gloria Spandre and Toru Tamagawa and Fabrizio Tavecchio and Roberto Taverna and Yuzuru Tawara and Allyn F. Tennant and Nicholas E. Thomas and Francesco Tombesi and Alessio Trois and Sergey S. Tsygankov and Roberto Turolla and Jacco Vink and Martin C. Weisskopf and Fei Xie and Silvia Zane},
journal= {arXiv preprint arXiv:2212.12472},
year = {2023}
}
备注
Accpted for publication in ApJ