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Scientific research
My main fields of interest are the internal structure and evolution of
stars and, in particular, the stucture and evolution of (mass
transferring)  compact binaries, i.e.
of double stars consisting of at least one compact star (either a
white dwarf, a
neutron star or a black hole) such as
cataclysmic variables,
low-mass X-ray binaries,
other types of X-ray binaries,
binary (millisecond) pulsars,
 supersoft X-ray sources, etc. In addition to the study of
the formation and evolution of such binaries I have also studied the
observed collective properties of the aforementioned objects by means
of population synthesis techniques which also take into account, as far
as possible, the relevant observational selection effects. My interest
in the collective properties of compact binaries is also one of the
main reasons why I have been (and still am) tracking the basic
observational data of cataclysmic binaries, low-mass X-ray binaries and
related objects. As a service to the community (since almost 25 years)
I have made these data available in print or online in the form of the
"Catalogue
of cataclysmic binaries, low-mass X-ray binaries and
related objects". In the same context I have also
contributed data to the online "Catalog and Atlas of Cataclysmic Variables".
Other topics of interest are:
- how to properly calculate mass transfer in binary systems and the
study of the physical and numerical stability of mass transfer
- the physics of accretion discs, the disc instability model for dwarf
nova outbursts and its application to low-mass X-ray binaries
- the formation of millisecond pulsars
- the consequences of irradiating the mass losing star with accretion
luminosity coming from the near vicinity of the compact star on the long-term
evolution of compact binaries
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© 2003—2013, Max-Planck-Gesellschaft, München
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Letzte Änderung: 14.9.2007
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