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Buckle, J. V.; Hills, R. E.; Smith, H.; Dent, W. R. F.; Bell, G.; Curtis, E. I.; Dace, R.; Gibson, H.; Graves, S. F.; Leech, J.; Richer, J. S.; Williamson, R.; Withington, S.; Yassin, G.; Bennett, R.; Hastings, P.; Laidlaw, I.; Lightfoot, J. F.; Burgess, T.; Dewdney, P. E.; Hovey, G.; Willis, A. G.; Redman, R.; Wooff, B.; Berry, D. S.; Cavanagh, B.; Davis, G. R.; Dempsey, J.; Friberg, P.; Jenness, T.; Kackley, R.; Rees, N. P.; Tilanus, R.; Walther, C.; Zwart, W.; Klapwijk, T. M.; Kroug, M.; Zijlstra, T.
Monthly notices of the Royal Astronomical Society, 10/2009, Letnik: 399, Številka: 2Journal Article
This paper describes a new Heterodyne Array Receiver Program (HARP) and Auto-Correlation Spectral Imaging System (ACSIS) that have recently been installed and commissioned on the James Clerk Maxwell Telescope. The 16-element focal-plane array receiver, operating in the submillimetre from 325 to 375 GHz, offers high (three-dimensional) mapping speeds, along with significant improvements over single-detector counterparts in calibration and image quality. Receiver temperatures are ∼120 K across the whole band, and system temperatures of ∼300 K are reached routinely under good weather conditions. The system includes a single-sideband (SSB) filter so these are SSB values. Used in conjunction with ACSIS, the system can produce large-scale maps rapidly, in one or more frequency settings, at high spatial and spectral resolution. Fully sampled maps of size can be observed in under 1 h. The scientific need for array receivers arises from the requirement for programmes to study samples of objects of statistically significant size, in large-scale unbiased surveys of galactic and extra-galactic regions. Along with morphological information, the new spectral imaging system can be used to study the physical and chemical properties of regions of interest. Its three-dimensional imaging capabilities are critical for research into turbulence and dynamics. In addition, HARP/ACSIS will provide highly complementary science programmes to wide-field continuum studies and produce the essential preparatory work for submillimetre interferometers such as the Submillimeter Array (SMA) and Atacama Large Millimeter/Submillimeter Array (ALMA).
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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