IXPE 揭示天鹅座 X-3 为银河系超亮 X 射线源
高能天体物理现象
2024-08-09 v2 太阳与恒星天体物理
摘要
当光度超过临界值（即爱丁顿极限）时，致密天体吸积物质会受到辐射压的抑制。超亮 X 射线源的发现表明，即使表观光度显著超过该极限，吸积仍可进行。表观高光度可能由外流对辐射的几何束流效应产生。决定束流放大倍数的外流半张角此前从未被稳健限定。利用成像 X 射线偏振探测器（IXPE），我们对银河系 X 射线双星 Cyg X-3 进行了 X 射线偏振测量。我们发现超过 20%、几乎与能量无关的线偏振，且偏振方向垂直于射电喷流方向。这些性质明确指示天鹅座 X-3 X 射线双星中存在准直外流，并将其半张角限定为 <15 度。因此，该源可用作研究超临界吸积态的实验室。这一发现凸显了 X 射线偏振测量在推动我们对吸积源理解方面的重要性。
引用
@article{arxiv.2303.01174,
title = {Cygnus X-3 revealed as a Galactic ultraluminous X-ray source by IXPE},
author = {Alexandra Veledina and Fabio Muleri and Juri Poutanen and Jakub Podgorný and Michal Dovčiak and Fiamma Capitanio and Eugene Churazov and Alessandra De Rosa and Alessandro Di Marco and Sofia Forsblom and Philip Kaaret and Henric Krawczynski and Fabio La Monaca and Vladislav Loktev and Alexander A. Lutovinov and Sergey V. Molkov and Alexander A. Mushtukov and Ajay Ratheesh and Nicole Rodriguez Cavero and James F. Steiner and Rashid A. Sunyaev and Sergey S. Tsygankov and Andrzej A. Zdziarski and Stefano Bianchi and Joe S. Bright and Nikolaj Bursov and Enrico Costa and Elise Egron and Javier A. Garcia and David A. Green and Mark Gurwell and Adam Ingram and Jari J. E. Kajava and Ruta Kale and Alex Kraus and Denys Malyshev and Frédéric Marin and Giorgio Matt and Michael McCollough and Ilia A. Mereminskiy and Nikolaj Nizhelsky and Giovanni Piano and Maura Pilia and Carlotta Pittori and Ramprasad Rao and Simona Righini and Paolo Soffitta and Anton Shevchenko and Jiri Svoboda and Francesco Tombesi and Sergei Trushkin and Peter Tsybulev and Francesco Ursini and Martin C. Weisskopf and Kinwah Wu and Iván 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 Niccolò Bucciantini and Simone Castellano and Elisabetta Cavazzuti and Chien-Ting Chen and Stefano Ciprini and Ettore Del Monte and Laura Di Gesu and Niccolò Di Lalla and Immacolata Donnarumma and Victor Doroshenko and Steven R. Ehlert and Teruaki Enoto and Yuri Evangelista and Sergio Fabiani and Riccardo Ferrazzoli and Shuichi Gunji and Kiyoshi Hayashida and Jeremy Heyl and Wataru Iwakiri and Svetlana G. Jorstad and Vladimir Karas and Fabian Kislat and Takao Kitaguchi and Jeffery J. Kolodziejczak and Luca Latronico and Ioannis Liodakis and Simone Maldera and Alberto Manfreda and Andrea Marinucci and Alan P. Marscher and Herman L. Marshall and Francesco Massaro and Ikuyuki Mitsuishi and Tsunefumi Mizuno and Michela Negro and Chi-Yung 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 Andrea Possenti and Simonetta Puccetti and Brian D. Ramsey and John Rankin and Oliver Roberts and Roger W. Romani and Carmelo Sgrò and Patrick Slane and Gloria Spandre and Doug Swartz and Toru Tamagawa and Fabrizio Tavecchio and Roberto Taverna and Yuzuru Tawara and Allyn F. Tennant and Nicholas E. Thomas and Alessio Trois and Roberto Turolla and Jacco Vink and Fei Xie and Silvia Zane},
journal= {arXiv preprint arXiv:2303.01174},
year = {2024}
}
备注
52 pages, 14 figures, 3 tables. Author version of the article published in Nature Astronomy