I review the basics of the disc instability model (DIM) for dwarf novae and soft-X-ray
transients and its most recent developments, as well as the current limitations of the model …

We model the broad-band (optical/UV and X-ray) continuum spectrum of the 'changing-
look'active galactic nucleus (AGN) Mrk 1018, as it fades from Seyfert 1 to 1.9 in∼ 8 years …

The new multiwavelength monitoring campaign on NGC 5548 shows clearly that the
variability of the ultraviolet (UV)/optical light curves lags by progressively longer times at …

Recurring outbursts associated with matter flowing onto compact stellar remnants (such as
black holes, neutron stars and white dwarfs) in close binary systems provide a way of …

We use well–established observational evidence to draw conclusions about the
fundamental nature of the viscosity in accretion discs. To do this, we first summarise the …

We use the SOUX sample of∼ 700 active galactic nucleus (AGN) to form average optical-
ultraviolet (UV)-X-rays spectral energy distributions (SEDs) on a two-dimensional (2D) grid …

Disc accretion rate onto low mass protostar FU Ori suddenly increased hundreds of times 85
yr ago and remains elevated to this day. We show that the sum of historic and recent …

In the classical grouping of large magnitude episodic variability of young accreting stars, FU
Ori type objects (FUORs) outshine their stars by a factor of∼ 100, and can last for up to …

Volatile species in protoplanetary discs can undergo a phase change from vapour to solid.
These 'snow lines' can play vital roles in planet formation at all scales, from dust coagulation …

Context. Previous simulations of cataclysmic variables studied either the quiescence, or the
outburst state in multiple dimensions or they simulated complete outburst cycles in one …