The First Station of the Long Wavelength Array

Details The First Station of the Long Wavelength Array The First Station of the Long Wavelength Array

2010-09-03

arxiv.org/abs/1009.0666v1

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

10 pages, ISKAF2010 Science Meeting, June 2010, Assen, The Netherlands

Scientific paper

The Long Wavelength Array (LWA) will be a new multi-purpose radio telescope operating in the frequency range 10-88 MHz. Upon completion, LWA will consist of 53 phased array "stations" distributed over a region about 400 km in diameter in the state of New Mexico. Each station will consist of 256 pairs of dipole-type antennas whose signals are formed into beams, with outputs transported to a central location for high-resolution aperture synthesis imaging. The resulting image sensitivity is estimated to be a few mJy (5 sigma, 8 MHz, 2 polarizations, 1 hr, zenith) in 20-80 MHz; with resolution and field of view of (8", 8 deg) and (2",2 deg) at 20 MHz and 80 MHz, respectively. All 256 dipole antennas are in place for the first station of the LWA (called LWA-1), and commissioning activities are well underway. The station is located near the core of the EVLA, and is expected to be fully operational in early 2011.

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