X-Ray Polarization of the Magnetar 1E 1841−045
R. J. Stewart; George Younes; A. K. Harding; Zorawar Wadiasingh; Matthew G. Baring; Michela Negro; Tod E. Strohmayer; Wynn C. G. Ho · 2025 · The Astrophysical Journal Letters
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Abstract
Abstract We report on IXPE and NuSTAR observations beginning 40 days after the 2024 outburst onset of magnetar 1E 1841−045, marking the first IXPE observation of a magnetar in an enhanced state. Our spectropolarimetric analysis indicates that both a blackbody (BB) plus double power-law (PL) and a double blackbody plus power-law spectral model fit the phase-averaged intensity data well, with a hard PL tail (Γ = 1.19 and 1.35, respectively) dominating above ≈5 keV. For the former model, we find the soft PL (the dominant component at soft energies) exhibits a polarization degree (PD) of ≈30% whil
Abstract by R. J. Stewart; George Younes; A. K. Harding; Zorawar Wadiasingh; Matthew G. Baring; Michela Negro; Tod E. Strohmayer; Wynn C. G. Ho, The Astrophysical Journal Letters (2025) — licensed CC BY 4.0.
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Metadata source: OpenAlex · DOI 10.3847/2041-8213/adbffa