ar X iv : a st ro - p h / 99 12 41 3 v 1 2 0 D ec 1 99 9 Jet dynamics in black hole physics : acceleration during subparsec collimation ∗

ar X iv : a st ro - p h / 96 12 22 0 v 1 2 3 D ec 1 99 6 BLACK HOLES : FROM GALACTIC NUCLEI TO ELEMENTARY PARTICLES 1

We present a broad review on black holes. We analyse some of the fundamental concepts in black hole theory, the observational and theoretical status of stellar and galactic black holes, and their appearance

ar X iv : a st ro - p h / 98 08 21 9 v 1 2 0 A ug 1 99 8 Sgr A ∗ : A supermassive black hole or a spatially extended object ?

ar X iv : a st ro - p h / 98 05 10 6 v 1 8 M ay 1 99 8 Probing Black - Hole Physics in the Laboratory Using High Intensity Femtosecond Lasers

It is shown how laboratory experiments performed with high intensity femtosecond lasers can probe the physics of black holes in the near-horizon regime. The acceleration generated by the high intensity laser ranging from 10g to more than 10g is identified with the gravitational acceleration at stretched horizons. In the black-hole’s asymptotic region, the stretchedhorizon-reflected light shows ...

ar X iv : a st ro - p h / 98 10 37 9 v 1 2 3 O ct 1 99 8 Supermassive Black Holes Then and Now ∗

Recent surveys suggest that most or all normal galaxies host a massive black hole with 1/100 to 1/1000 of the visible mass of the spheroid of the galaxy. Various lines of argument suggest that these galaxies have merged at least once in our past lightcone, and that the black holes have also merged. This leads to a merger rate of massive black holes of about 1/yrs.

ar X iv : a st ro - p h / 99 12 32 6 v 1 1 5 D ec 1 99 9 Microquasars Jochen Greiner

Microquasars are binary systems in our Galaxy which sporadically eject matter at relativistic speeds along bipolar jets. While phenomenologically similar to quasars, their vicinity allows much more in-depth studies. I review the observational aspects of microquasars, in particular the new developments on the interplay between accretion disk instabilities and jet ejection.