The study of ultraluminous X-ray sources (ULXs) has changed dramatically over the last
decade. In this review we first describe the most important observations of ULXs in various …

We report new radio observations of a sample of 36 neutron star (NS) X-ray binaries, more
than doubling the sample in the literature observed at current-day sensitivities. These …

For decades cataclysmic variables (CVs) were thought to be one of the few classes of
accreting compact objects to not launch jets, and have consequently been used to constrain …

ABSTRACT NASA's NICER telescope has recently provided evidence for non-dipolar
magnetic field structures in rotation-powered millisecond pulsars. These stars are assumed …

Accretion disks around compact objects are expected to enter an unstable phase at high
luminosity. One instability may occur when the radiation pressure generated by accretion …

Baikal-GVD has recently published its first measurement of the diffuse astrophysical neutrino
flux, performed using high-energy cascade-like events. We further explore the Baikal-GVD …

We report on analysis of observations of the bright transient X-ray pulsar (XRP) Swift J0243.
6+ 6124 obtained during its 2017–2018 giant outburst with Insight-HXMT, NuSTAR, and …

We consider the current observed ensemble of pulsing ultraluminous X-ray sources
(PULXs). We show that all of their observed properties (luminosity, spin period, and spin-up …

Context. Extragalactic fast X-ray transients (FXRTs) are short flashes of X-ray photons of
unknown origin that last a few seconds to hours. Aims. Our ignorance about their physical …

We present detailed timing and spectral analyses of the transient X-ray pulsar RX J0209. 6−
7427 in the Small Magellanic Cloud during its 2019 giant outburst. With a better known …