Technical details of the GMVA stations.
|Name||Diameter||Tsys at zenith||Calib||SEFD||Pol. leakage (May 2010)|
|Effelsberg (EF)||100||130||Diode||929||7 ± 3|
|Plateau de Bure (PB)||34.8||90||Average||409||3 ± 3|
|Pico Veleta (PV)||30||90||Chopper||643||2 ± 2|
|VLBA||25||100||Diode||2941||6 ± 3|
|Metsähovi (MH)||14||300||Diode||17 647||4 ± 2|
Notes. Values of PB are given for the combined array (i.e., in phased-array mode). Diode stands for the common on-off noise-diode method (or equivalent), which does not correct for the atmospheric opacity; chopper refers to the hot-cold chopper-wheel method (or equivalent; e.g. Penzias & Burrus 1973), which corrects for the opacity; and average refers to the Tsys average of all the PB antennas (accounting for the phasing efficiency and applying model-based estimates of the opacity). SEFD is the system equivalent flux density. The polarisation leakage column (D-term) is the average amplitude of the polarization-leakage factors, as estimated from the fitting for all the sources observed in the GMVA session reported in this paper (see Sect. 6). Onsala only records LCP (hence, there are no D-terms estimated).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.