High Sensitivity Array
By adding the GBT, phased VLA, Arecibo, and Effelsberg to a VLBA experiment the sensitivity can be increased by an order of magnitude. This capability opens up new avenues for scientific discovery. The aim of the High Sensitivity Array initiative is to facilitate the planning, scheduling, and calibration of observations making use of this array.
- Use the EVN sensitivity Calculator to estimate the rms noise.
- Keep in mind the limitations on transit time for Arecibo of 1-2.75 hours for 0 < declination < 37 degrees (see also The VLBI Guide at Arecibo and The New Users Guide at Arecibo).
- Before you schedule your run consult Observing with the HSA.
- Effelsberg has often been used in conjunction with the VLBA, and is frequency agile at 5 GHz and above. For more information about including Effelsberg with the HSA consult these notes by Richard Porcas.
- Here is a Sample Observing Schedule that makes use of the HSA at 8.4 GHz to do phase referencing on a weak Gamma Ray Burst.