The gravitational lens J1131-1231 - How to avoid missing an opportunity
arXiv:0811.3421
O. Wucknitz [1], F. Volino [1]
- Argelander-Institut für Astronomie, Auf dem Hügel 71, 53121 Bonn, Germany
Abstract
Original Poster
So far the lens J1131-1231 has been studied only at optical and
X-ray wavelengths. A detection in the radio was almost missed as a result of an
incorrect position and archive problems. We show how a direct analysis of NVSS
uv data - in contrast to the catalogue or images alone - provided sufficient
evidence for further radio investigations. Several projects are now in
progress.
Proceedings version
So far the lens J1131-1231 has been studied only at optical and
X-ray wavelengths. A detection in the radio was almost missed as a result of
an incorrect position and archive problems. A direct analysis of NVSS uv
data - in contrast to the catalogue or images alone - provided
sufficient evidence of a detection to justify further radio investigations.
The system was subsequently observed with MERLIN and the EVN in e-VLBI mode.
Even though MERLIN seems to show the lensed star-forming regions and
the compact cores, a preliminary analysis of the EVN data only shows an AGN
in the lens itself but not the lensed cores. Additional VLA
observations will be carried out soon.
PoS (IX EVN Symposium) (2008) 102 (link to online journal)
proceedings version:
arXiv:0811.3421 (link to e-print archive)
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