In recent years, searches of archival X-ray data have revealed galaxies exhibiting nuclear
quasi-periodic eruptions with periods of several hours. These are reminiscent of the tidal …

The majority of long-duration (> 2 s) gamma-ray bursts (GRBs) arise from the collapse of
massive stars, with a small proportion created from the merger of compact objects. Most of …

ABSTRACT We present the Living Swift-XRT Point Source (LSXPS) catalogue and real-time
transient detector. This system allows us for the first time to carry out low-latency searches …

Follow-up observations of short gamma-ray bursts (sGRBs) have continuously unveiled late
extended/plateau emissions, attributed to jet launch due to late engine activity, the nature of …

Abstract Fast X-ray Transients (FXTs) are X-ray flares with durations ranging from a few
hundred seconds to a few hours. Possible origins include the tidal disruption of a white …

Context. Extragalactic fast X-ray transients (FXTs) are short flashes of X-ray photons of
unknown origin that last a few minutes to hours. Aims. We extend the previous search for …

Extragalactic fast X-ray transients (FXTs) are a class of soft (0.3–10 keV) X-ray transients
lasting a few hundred seconds to several hours. Several progenitor mechanisms have been …

Context. Extragalactic fast X-ray transients (FXTs) are short-duration (∼ ks) X-ray flashes of
unknown origin, potentially arising from binary neutron star (BNS) mergers, tidal disruption …

We present a detailed compilation and analysis of the X-ray phase space of low-to
intermediate-redshift (0≤ z≤ 1) transients that consolidates observed light curves (and …

Context. Fast X-ray transients (FXTs) are X-ray flares that last from minutes to hours. Multi-
wavelength counterparts to these FXTs have proven hard to find. As a result, distance …