Highly Significant Detection of X-Ray Polarization from the Brightest Accreting Neutron Star Sco X-1
In: The Astrophysical Journal Letters, Jg. 960 (2024), Heft 2, S. L11
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Zugriff:
The Imaging X-ray Polarimetry Explorer measured with high significance the X-ray polarization of the brightest Z-source, Sco X-1, resulting in the nominal 2–8 keV energy band in a polarization degree of 1.0% ± 0.2% and a polarization angle of 8° ± 6° at a 90% confidence level. This observation was strictly simultaneous with observations performed by NICER, NuSTAR, and Insight-HXMT, which allowed for a precise characterization of its broadband spectrum from soft to hard X-rays. The source has been observed mainly in its soft state, with short periods of flaring. We also observed low-frequency quasiperiodic oscillations. From a spectropolarimetric analysis, we associate a polarization to the accretion disk at
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Highly Significant Detection of X-Ray Polarization from the Brightest Accreting Neutron Star Sco X-1
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| Autor/in / Beteiligte Person: | Fabio La Monaca ; Alessandro Di Marco ; Poutanen, Juri ; Bachetti, Matteo ; Sara Elisa Motta ; Papitto, Alessandro ; Pilia, Maura ; Xie, Fei ; Bianchi, Stefano ; Bobrikova, Anna ; Costa, Enrico ; Deng, Wei ; Ge, Ming-Yu ; Illiano, Giulia ; Jia, Shu-Mei ; Krawczynski, Henric ; Eleonora Veronica Lai ; Liu, Kuan ; Mastroserio, Guglielmo ; Muleri, Fabio ; Rankin, John ; Soffitta, Paolo ; Veledina, Alexandra ; Ambrosino, Filippo ; Melania Del Santo ; Chen, Wei ; Garcia, Javier A. ; Kaaret, Philip ; Russell, Thomas D. ; Wei, Wen-Hao ; Zhang, Shuang-Nan ; Zuo, Chao ; Arzoumanian, Zaven ; Cocchi, Massimo ; Gnarini, Andrea ; Farinelli, Ruben ; Gendreau, Keith ; Ursini, Francesco ; Weisskopf, Martin C. ; Zane, Silvia ; Agudo, Iván ; Antonelli, Lucio A. ; Baldini, Luca ; Baumgartner, Wayne H. ; Bellazzini, Ronaldo ; Bongiorno, Stephen D. ; Bonino, Raffaella ; Brez, Alessandro ; Bucciantini, Niccolò ; Capitanio, Fiamma ; Castellano, Simone ; Cavazzuti, Elisabetta ; Chen, Chien-Ting ; Ciprini, Stefano ; Alessandra De Rosa ; Ettore Del Monte ; Laura Di Gesu ; Niccolò Di Lalla ; Donnarumma, Immacolata ; Doroshenko, Victor ; Dovčiak, Michal ; Ehlert, Steven R. ; Enoto, Teruaki ; Evangelista, Yuri ; Fabiani, Sergio ; Ferrazzoli, Riccardo ; Gunji, Shuichi ; Hayashida, Kiyoshi ; Heyl, Jeremy ; Iwakiri, Wataru ; Jorstad, Svetlana G. ; Karas, Vladimir ; Kislat, Fabian ; Kitaguchi, Takao ; Kolodziejczak, Jeffery J. ; Latronico, Luca ; Liodakis, Ioannis ; Maldera, Simone ; Manfreda, Alberto ; Marin, Frédéric ; Marinucci, Andrea ; Marscher, Alan P. ; Marshall, Herman L. ; Massaro, Francesco ; Matt, Giorgio ; Mitsuishi, Ikuyuki ; Mizuno, Tsunefumi ; Negro, Michela ; Ng, Chi-Yung ; O’Dell, Stephen L. ; Omodei, Nicola ; Oppedisano, Chiara ; Pavlov, George G. ; Peirson, Abel L. ; Perri, Matteo ; Pesce-Rollins, Melissa ; Petrucci, Pierre-Olivier ; Possenti, Andrea ; Puccetti, Simonetta ; Ramsey, Brian D. ; Ratheesh, Ajay ; Roberts, Oliver J. ; Romani, Roger W. ; Sgrò, Carmelo ; Slane, Patrick ; 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 S. ; Turolla, Roberto ; Vink, Jacco ; Wu, Kinwah ; Collaboration, IXPE |
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| Zeitschrift: | The Astrophysical Journal Letters, Jg. 960 (2024), Heft 2, S. L11 |
| Veröffentlichung: | IOP Publishing, 2024 |
| Medientyp: | academicJournal |
| ISSN: | 2041-8213 (print) ; 2041-8205 (print) |
| DOI: | 10.3847/2041-8213/ad132d |
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