The observations were done on December 28th 1998 in full polarization mode at 5, 8.4, 22 and 43 GHz. We also analyzed archived CHANDRA
data from a short (2.3ksec) snapshot observation of NGC1052 and found a X-ray jet associated with the well known radio jet.
The parsec-scale twin jet
The
X-ray jet of NGC1052
Movie:
Zooming into the nucleus of NGC1052
From the maps at the four frequencies a movie was produced,
which shows the total intensity structure as a function
of frequency. Optically thin regions on both sides are
seen to fade away towards higher frequencies. At the base of
both jets emission is showing up as the frequency is
tuned up. This indicates the presence of strong absorption pre-
sumably caused by an obscuring torus around a supermassive
black hole.
Download
Complete Thesis (gzipped ps-file, 6.7Mb)
Chapter
1 (gzipped ps-file, : 2.5Mb)
Introduction to AGN and the unified scheme, a small gallary of radio
and X-ray jets, NGC1052 the star of the show
Chapter
2 (gzipped ps-file, : 90kb)
Theoretical background: Synchrotron and inverse Compton radiation,
Jet emission, Core shift
Chapter
3 (gzipped ps-file, : 0.7Mb)
Fundamentals of radio aperture synthesis, VLBA observations of NGC1052,
VLBI data reduction:
a-priori calibration, fringe fitting, total intensity mapping,
feed calibration
Chapter
4 (gzipped ps-file, : 1Mb)
Results: Total intensity mapping, Model fitting and image alignment,
Spectral analysis,
Brightness temperature distribution, Polarimetry, Core shift analysis
Chapter
5 (gzipped ps-file, : 50kb)
The big picture: A very simple model for the nucleus of NGC1052
Appendices
(gzipped ps-file, : 2.1Mb)
Single dish spectrum, MERLIN and CHANDRA observations, NGC1052 on kpc-scales
in the radio regime,
Xray results