M. Perri

TL;DR: The XRT is a sensitive, autonomous X-ray imaging spectrometer onboard the Swift Gamma-Ray Burst Observatory as mentioned in this paper, which can estimate the position of the satellite within 5 seconds of target acquisition by the Swift Observatory for typical bursts.

TL;DR: In this paper , the authors reported a highly significant (>17σ) detection of the polarization signal from an accreting neutron star, which is far below theoretical expectations for this object, and stays low throughout the spin cycle of the pulsar.

TL;DR: This article measured the x-ray polarization of the magnetar 4U 0142+61 using the Imaging X-ray Polarimetry Explorer and found a linear polarization degree of 13.5 ± 0.8% averaged over the 2-to 8-kilo-electron volt band.

TL;DR: The last decade has brought about a profound transformation in multimessenger science as discussed by the authors , with the discovery of the diffuse astrophysical neutrino flux, the first observation of gravitational waves by LIGO and the first joint detections in gravitational waves and photons and in neutrinos and photons.

TL;DR: In this article, the authors report the initial results of the analysis of the Swift X-ray Telescope effective area as measured both on-axis and off-axis during the in-flight calibration phase using the laboratory results and ray-tracing simulations as a starting point.