Recent scientific progress in SU UMa-type dwarf novae

Wednesday, 12. April 2017, 14:00 - 15:00
Location Bibliothek
I am Akira Imada, a visitor of Hamburg University from this April.
I will talk about recent scientific progress in SU UMa-type dwarf novae.
Dwarf novae are a subclass of cataclysmic variables stars that consist of
a white dwarf and a Roche-lobe filling secondary. An accretion disk is
formed around the white dwarf, which plays a key role in their short and
long-term activities. SU UMa-type dwarf novae show "superhumps" during an
active state. Superhumps are tooth-like modulations with amplitudes of
0.2 mag. Analysing the superhump light curves, we can draw important
information on the binary, including e.g., orbital period, mass ratio,
and evolutional status. Superhump light curves can be obtained using a
30-cm class telescope, which means that everyone can start research for
SU UMa-type dwarf novae.
 If I have time, I will also introduce a new telescope in Japan and recent
photometric results of a black hole binary.

: Akira Imada