Francesco Ursini, Andrea Gnarini, Fiamma Capitanio, Anna Bobrikova, Massimo Cocchi, Alessandro Di Marco, Sergio Fabiani, Ruben Farinelli, Fabio La Monaca, John Rankin, Mary Lynne Saade, Juri Poutanen
Published 2024-09-11Version 1
Low-mass X-ray binaries hosting weakly magnetized neutron stars (NS-LMXBs) are among the brightest sources in the X-ray sky. Since 2021, the Imaging X-ray Polarimetry Explorer (IXPE) has provided new measurements of the X-ray polarization of these sources. IXPE observations have revealed that most NS-LMXBs are significantly polarized in the X-rays, providing unprecedented insight into the geometry of their accretion flow. In this review paper, we summarize the first results obtained by IXPE on NS-LMXBs, the emerging trends within each class of sources (atoll/Z), and possible physical interpretations.
Comments: 8 pages, 3 figures, invited review for the Special Issue X-ray Polarization: A New Era Begins
Evolving Neutron Star Low-Mass X-ray Binaries to Ulta-compact X-ray Binaries
Very hard states in neutron star low-mass X-ray binaries
The polarization of the boundary layer around weakly magnetized neutron stars in X-ray binaries
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