The disc instability model which is supposed to describe outbursts of dwarf nova and low-
mass X-ray binary transient systems is presented and reviewed in detail. Various …

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 …

ABSTRACT The Swift/Burst Alert Telescope (BAT) hard X-ray transient monitor provides
near real-time coverage of the X-ray sky in the energy range 15–50 keV. The BAT observes …

With the advent of more sensitive all-sky instruments, the transient universe is being probed
in greater depth than ever before. Taking advantage of available resources, we have …

We present numerical simulations of internal gravity waves (IGW) in a star with a convective
core and extended radiative envelope. We report on amplitudes, spectra, dissipation, and …

In this paper, we revisit the issue of the propagation of warps in thin and viscous accretion
discs. In this regime, warps are known to propagate diffusively, with a diffusion coefficient …

We study the prospect of explaining the outbursts of Soft X-ray Transients (SXTs) by the
thermal-viscous instability in a thin disc. This instability is linked to hydrogen ionization and …

Powerful relativistic jets are one of the main ways in which accreting black holes provide
kinetic feedback to their surroundings. Jets launched from or redirected by the accretion flow …

Abstract The periodic precession (162-d) and nodding (6.3-d) motions of the jets in SS433
are driven in the outer regions of the disc, whereas the jets themselves, being relativistic, are …

In many black hole (BH) systems, the accretion disk is expected to be misaligned with
respect to the BH spin axis. If the scale height of the disk is much smaller than the …