### Monday October 21, 2002

**Speaker**: Emrah Paksoy

**Title**: General Relativistic Models of Black Holes

**Abstract**: Although there is no concrete evidence of existence of
black holes, some elegant mathematical models are available.
It is a very famous property of black holes that even light cannot
escape from their strong gravitational
force. In this talk I will give a general relativistic model for
non-rotational, spherically symmetric zero-charged bodies, and then
for black holes, and will show, in mathematical terms, that light cannot
escape.

Fundamental knowledge of Riemannian and semi-Riemannian geometry is
enough for this talk.