Presentation 1 : Invited
Observing black holes with gravitational waves (PCHE)
Eric Gourgoulhon
Gravitational waves are the only radiation that
a black hole can emit by itself (the Hawking radiation being
negligible for astrophysical black holes). I shall
give a review of the various processes by which black
holes emit gravitational waves and present the prospects
for detection by VIRGO/LIGO or LISA. Both stellar black
holes and galactic nuclei black holes will be discussed.
Presentation 2 : Invited
Have strange quark stars been observed ? (PCHE)
Eric Gourgoulhon
NASA has recently announced that two strange quark stars
have been discovered thanks to observations with the
Chandra satellite. After having presented briefly
the concept of strange quark star, stressing the
main differences with respect to neutron stars,
I shall discuss this announcement.