Nearby Galaxies


Multi-media presentation
given by Daniel Wang at the HEAD meeting (Oct. 2000)

Characteristic X-rays in the range from 0.1 to 100 keV are produced by gas heated to high temperature (millions of degree), high-energy particles with interaction with magnetic fields (synchrotron radiation) or photons (inverse Compton radiation). Hence, observations in the X-ray band are a particularly good diagnostical tool to study the high-energetic state of matter in the universe.

Primary scope of this project is to give a comprehensive insight into the X-ray source components of nearby galaxies, e.g. mass-accreting compact objects such as neutron stars or black holes, supernova remnants and supernova explosions. Also, the distribution and evolution of the hot interstellar medium is studied based on X-ray imaging spectroscopy of nearby galaxies with the ROSAT, Chandra and XMM-Newton observatories.