The Faculty of Mathematics and Natural Sciences: Search
Now showing items 1-4 of 4
Multi-frequency analysis of intraday variable radio sources
(2003)
Active Galactic Nuclei (AGN) are known to show significant flux density variability across the whole electromagnetic spectrum on a wide range of time scales, from years to less than one day. In the radio regime, variability ...
Clumpy Dust Tori in Active Galactic Nuclei
(2008)
Active Galactic Nuclei (AGN) are amongst the most luminous objects in the universe. The source of their activity is accretion onto a supermassive black hole in the center of the galactic nucleus. The various phenomena ...
VLBI Observations of Two Prototypical AGN: The BL Lac Object S5 0716+714 and the FR II Radio Galaxy Cygnus A
(2004)
This work will summarise recent results from VLBI observations of two radio sources that are the most representatives of their AGN class: the BL Lac object 0716+714 and the FRII radio galaxy Cygnus A. Both are important ...
Beobachtungen der unmittelbaren Umgebung von Supermassiven Schwarzen Löochern Millimeter-VLBI von AGN
(2006)
Mittels globaler Radiointerferometrie (Very-Long Baseline Interferometry: VLBI) ist es möglich, die unmittelbare Umgebung von Supermassiven Schwarzen Löchern zu beobachten. Die hohe Beobachtungsfrequenz von 86 GHz erlaubt ...