Discovery of polarized X-ray emission from the accreting millisecond pulsar SRGA J144459.2–604207
| Title: | Discovery of polarized X-ray emission from the accreting millisecond pulsar SRGA J144459.2–604207 |
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| Authors: | Papitto A.; Di Marco A.; Poutanen J.; Salmi T.; Illiano G.; La Monaca F.; Ambrosino F.; Bobrikova A.; Baglio M. C.; Ballocco C.; Burderi L.; Campana S.; Zelati F. C.; Di Salvo T.; La Placa R.; Loktev V.; Long S.; Malacaria C.; Zanon A. M.; Ng M.; Pilia M.; Sanna A.; Stella L.; Strohmayer T.; Zane S. |
| Contributors: | Papitto, A.; Di Marco, A.; Poutanen, J.; Salmi, T.; Illiano, G.; La Monaca, F.; Ambrosino, F.; Bobrikova, A.; Baglio, M. C.; Ballocco, C.; Burderi, L.; Campana, S.; Zelati, F. C.; Di Salvo, T.; La Placa, R.; Loktev, V.; Long, S.; Malacaria, C.; Zanon, A. M.; Ng, M.; Pilia, M.; Sanna, A.; Stella, L.; Strohmayer, T.; Zane, S. |
| Publisher Information: | EDP Sciences; Les Ulis, France |
| Publication Year: | 2025 |
| Collection: | Sapienza Università di Roma: CINECA IRIS |
| Subject Terms: | magnetic field; methods observational; polarization; pulsars individual SRGA J144459.2–604207; stars neutron; X-rays binaries |
| Description: | We report the discovery of polarized X-ray emission from an accreting millisecond pulsar. During a 10-day-long coverage of the February 2024 outburst of SRGA J144459.2−604207, the Imaging X-ray Polarimetry Explorer (IXPE) detected an average polarization degree of the 2–8 keV emission of 2.3% ± 0.4% at an angle of 59◦ ± 6◦ (east of north; the uncertainties quoted are at the 1σ confidence level). The polarized signal shows a significant energy dependence with a degree of 4.0% ± 0.5% between 3 and 6 keV and |
| Document Type: | article in journal/newspaper |
| Language: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/wos/WOS:001410983200007; volume:694; issue:A&A; firstpage:1; lastpage:9; numberofpages:9; journal:ASTRONOMY & ASTROPHYSICS; https://hdl.handle.net/11573/1753740 |
| DOI: | 10.1051/0004-6361/202451775 |
| Availability: | https://hdl.handle.net/11573/1753740; https://doi.org/10.1051/0004-6361/202451775 |
| Rights: | info:eu-repo/semantics/openAccess ; license:Creative commons ; license uri:http://creativecommons.org/licenses/by/4.0/ |
| Accession Number: | edsbas.64FF0087 |
| Database: | BASE |