Radioastronomy with Lofar - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Communication Dans Un Congrès Année : 2011

Radioastronomy with Lofar

Résumé

LOFAR is the first radiotelescope of a new generation, which can be described as "software telescopes". Observing between 15 and 240 MHz, the main complexity of LOFAR does not lie in the receivers (crossed, active dipoles), but in the hierarchical organisation of a large number of antennae (almost 50000) and in the analysis of the incoming data in a large computing facility. Rather than mechanically steering the telescope, pointing occurs fully numerically, and all observations are pre-processed on the fly to obtain a reasonable data volume. LOFAR will be 10 to 100 times more sensitive than the current instruments in the same frequency range. It will achieve sub-arcsecond resolution, which is 10 to 100 times better than the resolution of existing low-frequency instruments. It is also one of the most flexible instruments, making it interesting for a large number of scientific fields.
Fichier principal
Vignette du fichier
000039.pdf (569.05 Ko) Télécharger le fichier
Origine : Accord explicite pour ce dépôt

Dates et versions

insu-02507743 , version 1 (18-03-2020)

Identifiants

Citer

Jean-Mathias Griessmeier, Michel Tagger, Philippe Zarka. Radioastronomy with Lofar. JS'11 “The Next Generation Radiotelescopes", Mar 2011, Paris, France. ⟨10.1016/j.crhy.2011.11.002⟩. ⟨insu-02507743⟩
129 Consultations
104 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More