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astro-ph.HE2026
A Swift X-ray view of the SMS4 sample - III: Deeper insight into previously undetected sources
Alessandro Maselli, William R. Forman, Christine Jones +2
We update the X-ray information given in Maselli et al. (2024) for five bright radio sources in the SMS4 catalog, thanks to additional observations with the X-Ray Telescope (XRT) o…
astro-ph.HE2026
Tracking down the broadband polarimetric properties of PG 1553+113
Riccardo Middei, Svetlana G. Jorstad, Alan P. Marscher +78
We report on a nine-month monitoring campaign of the blazar PG 1553+113, relying on three observations carried out in 2025 with the Imaging X-ray Polarimetry Explorer (IXPE) and su…