We present a systematic analysis of the X-ray emission of a sample of 17 optically selected,
X-ray-detected tidal disruption events (TDEs) discovered between 2014 and 2021. The X …

The multiwavelength data of nuclear transient AT2018dyk, initially discovered as a changing-
look low-ionization nuclear emission-line region (LINER) galaxy, has been revisited by us …

The extremes of emission-line and continuum variability of Active Galactic Nuclei (AGN) are
unique probes of the physics and geometry of the central engine. This review provides an …

We report the discovery of Swift J221951− 484240 (hereafter: J221951), a luminous slow-
evolving blue transient that was detected by the Neil Gehrels Swift Observatory …

We present optical/UV observations and the spectroscopic classification of the transient
AT2023vto as a tidal disruption event (TDE) at z= 0.4846. The spectrum is dominated by a …

We present a search for luminous, long-duration ambiguous nuclear transients (ANTs)
similar to the unprecedented discovery of the extreme, ambiguous event AT2021lwx with a> …

The qualitative change of the type of particle trajectory homotopy in close vicinity of general-
relativistic gravitational singularity affects quantum statistics in systems of identical …

Lasair is the UK Community Broker for transient alerts from the Legacy Survey of Space and
Time from the Vera C. Rubin Observatory. We explain the system's capabilities, how users …

We demonstrate that at the rim of the photon sphere of a black hole, the quantum statistics
transition takes place in any multi-particle system of indistinguishable particles, which …

Some hydrogen-rich core-collapse supernovae (type IIP SNe) exhibit evidence for a
sustained energy source powering their light curves, resulting in a brighter and/or longer …