The concept of stars being tidally ripped apart and consumed by a massive black hole
(MBH) lurking in the center of a galaxy first captivated theorists in the late 1970s. The …

We describe ongoing searches for intermediate-mass black holes with M BH≈ 10–105 M⊙.
We review a range of search mechanisms, both dynamical and those that rely on accretion …

Tidal disruption events (TDEs) offer a unique way to study dormant black holes. While the
number of observed TDEs has grown thanks to the emergence of wide-field surveys in the …

While tidal disruption events (TDEs) have long been heralded as laboratories for the study of
quiescent black holes, the small number of known TDEs and uncertainties in their emission …

Quasi-periodic eruptions (QPEs) are luminous bursts of soft X-rays from the nuclei of
galaxies, repeating on timescales of hours to weeks,,,–. The mechanism behind these rare …

Despite traditional thinking, an appreciable population of massive black holes (that is, more
massive than stellar-mass black holes) may be lurking in dwarf galaxies. Before the last …

Abstract We present Real-time Automated Photometric IDentification (RAPID), a novel time
series classification tool capable of automatically identifying transients from within a day of …

Observational astronomy of tidal disruption events (TDEs) began with the detection of X-ray
flares from quiescent galaxies during the ROSAT all-sky survey of 1990–1991. The flares …

Massive black holes (BHs) at the centres of massive galaxies are ubiquitous. The population
of BHs within dwarf galaxies, on the other hand, is not yet known. Dwarf galaxies are thought …

Time-domain science has undergone a revolution over the past decade, with tens of
thousands of new supernovae (SNe) discovered each year. However, several observational …