We survey our understanding of classical novae—nonterminal, thermonuclear eruptions on
the surfaces of white dwarfs in binary systems. The recent and unexpected discovery of GeV …

High mass X-ray binaries are among the brightest X-ray sources in the Milky Way, as well as
in nearby Galaxies. Thanks to their highly variable emissions and complex phenomenology …

We present AT2020mrf (SRGe J154754. 2+ 443907), an extra-galactic (z= 0.1353) fast blue
optical transient (FBOT) with a rise time of tg, rise= 3.7 days and a peak luminosity of M g …

As a novel X-ray focusing technology, lobster-eye micropore optics (MPO) feature both a
wide observing field of view and true imaging capability, promising sky monitoring with …

Quasi-periodic eruptions (QPEs) are found in the center of five galaxies, where a tidal
disruption event (TDE)-like event has been reported in GSN 069, which occurred a couple of …

Dirty fireballs are a hypothesized class of relativistic massive-star explosions with an initial
Lorentz factor Γ init below the Γ init∼ 100 required to produce a long-duration gamma-ray …

Abstract The Gamma-Ray Integrated Detectors (GRID) is a space mission concept dedicated
to monitoring the transient gamma-ray sky in the energy range from 10 keV to 2 MeV using …

This article provides a review on X-ray pulsar-based navigation (XNAV). The review starts
with the basic concept of XNAV, and briefly introduces the past, present and future projects …

Abstract The Lobster Eye Imager for Astronomy (LEIA), a pathfinder of the Wide-field X-ray
Telescope of the Einstein Probe mission, was successfully launched onboard the SATech …

Optical transient surveys have led to the discovery of dozens of stellar tidal disruption events
(TDEs) by massive black hole in the centers of galaxies. Despite extensive searches, X-ray …