SN 2023ixf in Messier 101: Photo-ionization of Dense, Close-in Circumstellar Material in a Nearby Type II Supernova
The Astrophysical Journal Letters American Astronomical Society 954:2 (2023) l42
Complex variations in X-ray polarization in the X-ray pulsar LS V +44 17/RX J0440.9+4431
Astronomy & Astrophysics EDP Sciences 677 (2023) a57
Pulsar polarization: a partial-coherence model
Monthly Notices of the Royal Astronomical Society Oxford University Press 525:1 (2023) 840-853
Abstract:
The population of radio pulsars is observed to demonstrate certain polarization properties not explained by the conventional picture of pulsar polarization, namely frequency evolution of polarization, deviations of the linear polarization angle from a curve of geometric origins, and the presence of features in the circular polarization. We present the partial-coherence model as a way to explain the co-occurrence of these features and to provide an origin for circular polarization in radio pulsar profiles. We describe the mathematics of the model and demonstrate how it can explain these observed features, both on a population level and for the idiosyncrasies of individual pulsars. The partial coherence model can account for complex polarization behaviour, enabling improved access to information about pulsar geometries. We discuss the scientific implications of this for our understanding of pulsar radio emission and propagation.X-ray polarimetry of the accreting pulsar GX 301−2
Astronomy & Astrophysics EDP Sciences 678 (2023) a119
Sub-second infrared variability from the archetypal accreting neutron star 4U 1728−34
Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 525:2 (2023) 2509-2518