Other
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21741303t&link_type=abstract
American Astronomical Society, AAS Meeting #217, #413.03; Bulletin of the American Astronomical Society, Vol. 43, 2011
Other
Scientific paper
The Long Wavelength Array (LWA), a SKA Pathfinder, will be a new multi-purpose radio telescope operating in the frequency range 10-88 MHz. Scientific programs include pulsars, supernova remnants, general transient searches, radio recombination lines, solar and Jupiter bursts, investigations into the "dark ages" using redshifted hydrogen, and ionospheric phenomena. Upon completion, LWA will consist of 53 phased array "stations” distributed across a region over 400 km in diameter. Each station consists 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 (5sigma, 8 MHz, 2 polarizations, 1 h, zenith) from 20-80 MHz; with angular resolution of a few arcseconds. A technical overview of the LWA project is available (Ellingson etal. 2009, Proc. IEEE, 97, 1421), and additional information is online at http://lwa.unm.edu. Partners in the LWA project include LANL, JPL, NRAO, NRL, UNM, NMT, and Virginia Tech.
The first station of the LWA, called "LWA-1", is located near the center of the EVLA and is expected to achieve initial operational capability in early 2011. As of September 2010, all antennas have been installed as well as a subset of the "production” versions of receivers, digital electronics, data recorders, and monitoring and control system. The "transient buffer - wideband” (TBW) capability is operational with 20 dipoles, and provides the ability to capture simultaneous raw 196 MSPS A/D output over the entire 10-88 MHz tuning range in 61 ms bursts. Other operating modes are in the final stages of implementation. Some early results obtained with LWA-1 will be presented. Funding for the LWA has been provided by the Office of Naval Research.
Clarke Tracy
Craig Joseph
Dowell Jayce
Ellingson S.
Hartman Joel
No associations
LandOfFree
An Update on the Long Wavelength Array does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with An Update on the Long Wavelength Array, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Update on the Long Wavelength Array will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1403529