Very Large Array radio

Perhaps the most interesting and surprising discovery about Mercury s surface is the possible presence of ice caps at the planet s north and south poles. The first evidence for this discovery came as the result of studies conducted by researchers at NASA s Jet Propulsion Laboratory in Pasadena, California. The researchers bounced radar signals off the planet s north polar region and analyzed the reflected beams at the Very Large Array radio telescope system in New Mexico. They found that the spectra of the reflected beams were very similar to those for water ice. Since they first reported this result in 1991, further studies have been conducted to determine whether the poles really do contain water ice, although final confirmation has not yet been obtained. 

In Table 2 the columns are (1) Source name, (2) distance, (3) radio core flux we use intercontinental radio interferometry or radio data from the Very Large Array, (4) maximum energy, (5) cosmic rays flux relative to M87 and at some reasonably low particle energy such as 1018 eV. 

National Radio Astronomy Observatory Very Large Array http //www.vla.nrao.edu... 

Many point-spread functions, however, are far less well-behaved. For example. Fig. 1 shows an Airy disk and the point-spread functions of particular observations of the Hubble Space Telescope and the Very Large Array (a radio telescope) are shown in Figs. 3 and 4. 

Napier, P. J., Thompson, R. T, and Ekers, R. D. (1983). The very large array Design and performance of a modem synthesis radio telescope, Pmc. lEEEll, 1295-1320. 

The Very Large Array consists of 27 radio antennas in a Y-shaped configuration fifty miles west of Socorro, New Mexico. Each antenna is 25 meters in diameter. 

The Very Large Array, VLA, one of the world s most important astronomical radio observatories, consists of 27 radio antennas in a Y-shaped configuration on the Plains of San Agustin fifty miles west of Socorro, New Mexico (Fig. 7.3). Each antenna is 25 meters (82 feet) in diameter. The antennae can be used as an interferometer by combining the data to give the resolution equivalent to an antenna size of 36 km across, with the sensitivity of a dish 130 meters in diameter. 

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