VLBI with LOFAR
O. Wucknitz
- Argelander-Institut für Astronomie, Auf dem Hügel 71, 53121 Bonn, Germany
Abstract
I present some results of my ongoing analysis of early LOFAR data on long
and short baselines using VLBI methods. Fringe-fitting for LOFAR requires
special methods because of the low frequencies and the large relative
bandwidth. Goal of these experiments is the calibration of long-baseline
observations, but currently they are mainly used to understand the
behaviour of the instrument and the ionosphere. Important results include
finding first fringes to and between three German stations and the
detection of a number of technical problems.
Additional information is available here.
download original presentation
PDF file (4.0 MB, last change 14 Apr 2010)
43 pages, suitable for presentation with acroread. This version also includes some hyperlinks for quick navigation and links to references.
download printable version (small)
PDF file (1.5 MB, last change 14 Apr 2010)
Paper saving version. 5 pages, text in b/w, colour figures. 8 slides per A4 page.
download movie 1: single-band delay/rate 3C196 20 Aug 2009, DE-NL
GIF file (700.0 kB, last change 29 Sep 2009)
download movie 2: incoherent all-band delay/rate 3C48 NL-NL with CygA+CasA
GIF file (21.3 MB, last change 29 Sep 2009)
download movie 3: incoherent all-band delay/rate mapped to the sky
GIF file (22.6 MB, last change 29 Sep 2009)
download movie 4: incoherent all-band delay/rate 3C196 NL-Tautenburg
MPEG4 movie (8.0 MB, last change 10 Feb 2010)
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Script last modified on 7 Sep 2010
Last change to this data base entry on 14 Apr 2010