IXPE observations of magnetar 1E 1841-045 reveal polarization rising from ~15% at 2-3 keV to ~55% at 5.5-8 keV, and a hard power-law component polarized above 65%, suggesting a synchrotron/curvature origin.
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IXPE detection of highly polarized X-rays from the magnetar 1E 1841-045
IXPE observations of magnetar 1E 1841-045 reveal polarization rising from ~15% at 2-3 keV to ~55% at 5.5-8 keV, and a hard power-law component polarized above 65%, suggesting a synchrotron/curvature origin.