Proposal code

w034

Proposal title

Sub-Parsec Imaging of High-T_{\rm b} nuclei in Seyferts

The

Investigators and their

Affiliations

P.I. H. Falcke MPIfR Bonn
J. Ulvestad NRAO Socorro
A.S. Wilson Univ. Maryland \& STScI
G.C.~Bower, T. Krichbaum, J.A.~Zensus MPIfR Bonn

Proposal Abstract

We propose to observe two Seyfert galaxies (Mrk 348, III Zw 2) with variable, flat-spectrum radio nuclei that are compact and bright enough to be observed on earth-space baselines. The proposed observations provide a unique oppotunity to study these low-z AGN at a high linear resolution (i.e. sub-parsec scale), since only a few selected object in this class are accessible with space VLBI. From the observations we expect to see whether Seyfert nuclei can show core-jet structures similar to radio-loud AGN, despite showing substantial differences in their parsec-to-kpc structure. In addition we are searching for even higher brightness temperature components that might be indicative of relativistic boosting. For Mrk 348 we also might find evidence for an obscuring torus/disk that could cause the observed free-free absorption in the nucleus of this Seyfert 2 galaxy.

The full Cover Sheets (compressed post-script, typically 50kbytes) can be retrieved. Note that many proposals were reduced in extent by the Scientific Review Committee (e.g. by reducing the number of experiments), however the Cover Sheets contain the full proposal as submitted. Also note that AO2 proposals were submitted in May 1998, and information such as affiliations and contact details has changed for some proposers since that time. The Cover Sheets (and the details on this page, which were derived from the Cover Sheets) may therefore have changed.