Highly Significant Detection of X-Ray Polarization from the Brightest Accreting Neutron Star Sco X-1
| Title: | Highly Significant Detection of X-Ray Polarization from the Brightest Accreting Neutron Star Sco X-1 |
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| Authors: | Monaca FL; Marco AD; Poutanen J; Bachetti M; Motta SE; Papitto A; Pilia M; Xie F; Bianchi S; Bobrikova A; Costa E; Deng W; Ge M; Illiano G; Jia S; Krawczynski H; Lai EV; Liu K; Mastroserio G; Muleri F; Rankin J; Soffitta P; Veledina A; Ambrosino F; Santo MD; Chen W; Garcia JA; Kaaret P; Russell TD; Wei W; Zhang S; Zuo C; Arzoumanian Z; Cocchi M; Gnarini A; Farinelli R; Gendreau K; Ursini F; Weisskopf MC; Zane S; Agudo I; Antonelli LA; Baldini L; Baumgartner WH; Bellazzini R; Bongiorno SD; Bonino R; Brez A; Bucciantini N; Capitanio F; Castellano S; Cavazzuti E; Chen C; Ciprini S; Rosa AD; Monte ED; Gesu LD; Lalla ND; Donnarumma I; Doroshenko V; Dovčiak M; Ehlert SR; Enoto T; Evangelista Y; Fabiani S; Ferrazzoli R; Gunji S; Hayashida K; Heyl J; Iwakiri W; Jorstad SG; Karas V; Kislat F; Kitaguchi T; Kolodziejczak JJ; Latronico L; Liodakis I; Maldera S; Manfreda A; Marin F; Marinucci A; Marscher AP; Marshall HL; Massaro F; Matt G; Mitsuishi I; Mizuno T; Negro M; Ng C; O’Dell SL; Omodei N; Oppedisano C; Pavlov GG; Peirson AL; Perri M; Pesce-Rollins M; Petrucci P; Possenti A; Puccetti S; Ramsey BD; Ratheesh A; Roberts OJ; Romani RW; Sgrò C; Slane P; Spandre G; Swartz DA; Tamagawa T; Tavecchio F; Taverna R; Tawara Y; Tennant AF; Thomas NE; Tombesi F; Trois A; Tsygankov SS; Turolla R; Vink J; Wu K; IXPE Collaboration |
| Contributors: | Tuorlan observatorio, Tuorla Observatory; 1.2.246.10.2458963.20.90670098848 |
| Publisher Information: | Institute of Physics Publishing; United Kingdom; Britannia; GB |
| Publication Year: | 2026 |
| Collection: | University of Turku: UTUPub / Turun yliopisto |
| Description: | 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 |
| Document Type: | other/unknown material |
| Language: | English |
| Relation: | 960; L11; Astrophysical Journal Letters; https://www.utupub.fi/handle/10024/196218 |
| DOI: | 10.3847/2041-8213/ad132d |
| Availability: | https://www.utupub.fi/handle/10024/196218; https://doi.org/10.3847/2041-8213/ad132d |
| Accession Number: | edsbas.B57C519F |
| Database: | BASE |