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Michael Kramer (MPI FR Bonn): Neutron stars, black holes and gravitational waves - exploring gravity with radio astronomy

Date
Dec 12, 2019
Time
3:00 PM - 4:00 PM
Speaker
Michael Kramer
Affiliation
MPI Bonn
Series
IKTP Institutsseminar
Language
en
Main Topic
Physik
Other Topics
Physik
Host
Stefanie Todt, Carsten Bittrich
Description

The radio sky is a fascinating laboratory for a very wide range of physics. The laws of nature can be probed at a fundamental level, in particular when observing the most extreme matter in the observable universe - neutron stars. When they are visible as radio pulsars they can act as cosmic clocks that become especially interesting if they have a binary companion. Indeed, binary pulsars provide indispensable laboratories for precision tests of gravity. Effects that can be studied in great detail include the emission of gravitational waves, light-propagation, orbital and spin precession and more. But also fundamental differences between general relativity and alternative theories of gravity can be probed, such as possible violations of the strong equivalence principle, preferred frame effects or the existence of gravitational dipole radiation or scalar fields. Consequently,  those results find their application in studies of the equation-of-state of super-dense matter, the nature of dark matter, or the properties of black holes. This talk will try to summarise some of the latest results, including the first image of a black hole and its meaning.

Links

Last modified: Dec 12, 2019, 12:07:32 AM

Location

TUD Andreas-Schubert-Bau (E19)Zellescher Weg1901069Dresden
Homepage
https://navigator.tu-dresden.de/etplan/asb/00

Organizer

TU Dresden, Faculty of Science, Department of PhysicsHaeckelstraße301069Dresden
Phone
+49 351 463-33378
Fax
+49 351 463-37109
E-Mail
TUD Physik
Homepage
http://tu-dresden.de/die_tu_dresden/fakultaeten/fakultaet_mathematik_und_naturwissenschaften/fachrichtung_physik
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