72 citations · 193 across the 8 of their papers we have counts for
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A Distinct Type of Standstill in Ultra-Compact White Dwarf Binaries
Jan Kára, Liliana Rivera Sandoval, Iwona Kotko +3
AM CVn stars are ultra-compact, semi-detached binaries consisting of a white dwarf primary and a hydrogen-poor secondary. In this work, we analyse the AM CVn-type systems MGAB-V270…
KL Dra as a Benchmark Laboratory for Accretion-Disk Physics: Constraints from TESS and Ground-Based Surveys
Luis E. Salazar Manzano, Liliana E. Rivera Sandoval, Jean-Marie Hameury +4
We present the longest-term optical analysis of the AM CVn system KL Dra using years of monitoring from TESS and wide-field ground-based surveys. The continuous TESS cover…
The enigmatic origin of two dormant BH binaries: Gaia BH1 and Gaia BH2
Iwona Kotko, Sambaran Banerjee, Krzysztof Belczynski
The two systems, namely, Gaia~BH1 and Gaia~BH2, that have been confirmed as dormant (i.e., no X-ray emission detected) black hole (BH) - low-mass star binaries in the latest Gaia m…
The viscosity parameter alpha and the properties of accretion disc outbursts in close binaries
Iwona Kotko, Jean-Pierre Lasota
The physical mechanisms driving angular momentum transport in accretion discs are still unknown. Although it is generally accepted that, in hot discs, the turbulence triggered by t…
Models of AM CVn star outbursts
Iwona Kotko, Jean-Pierre Lasota, Guillaume Dubus +1
Outbursting AM CVn stars exhibit outbursts similar to those observed in different types of dwarf novae. Their light-curves combine the characteristic features of SU UMa, ER UMa, Z…
The outbursts properties of AM CVn stars
Iwona Kotko, Jean-Pierre Lasota, Guillaume Dubus
We briefly summarize the observational properties of ultra-compact binaries called AM CVn stars. We analize their outbursts originating from the thermal-viscous instability in heli…