Concept information
Terme préférentiel
VLA
Définition(s)
- The Karl G. Jansky Very Large Array (VLA) is a centimeter-wavelength radio astronomy observatory in the southwestern United States. It lies in central New Mexico on the Plains of San Agustin, between the towns of Magdalena and Datil, ~50 miles (80 km) west of Socorro. The VLA comprises twenty-eight 25-meter radio telescopes (twenty-seven of which are operational while one is always rotating through maintenance) deployed in a Y-shaped array and all the equipment, instrumentation, and computing power to function as an interferometer. Each of the massive telescopes is mounted on double parallel railroad tracks, so the radius and density of the array can be transformed to adjust the balance between its angular resolution and its surface brightness sensitivity. Astronomers using the VLA have made key observations of black holes and protoplanetary disks around young stars, discovered magnetic filaments and traced complex gas motions at the Milky Way's center, probed the Universe's cosmological parameters, and provided new knowledge about the physical mechanisms that produce radio emission. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Very_Large_Array)
Concept(s) générique(s)
Synonyme(s)
- Very Large Array imaging
- Very Large Array mapping
- Very Large Array observation
- VLA imaging
- VLA mapping
Traductions
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français
URI
http://data.loterre.fr/ark:/67375/MDL-ST198664-R
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