225 GHz Atmospheric Opacity Measurements from Two Arctic Sites
| Autor: | Matsushita, S., Chen, M. -T., Martin-Cocher, P., Asada, K., Chen, C. -P., Inoue, M., Paine, S., Turner, D., Steinbring, E. |
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| Rok vydání: | 2012 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1017/S1743921312016882 |
| Popis: | We report the latest results of 225 GHz atmospheric opacity measurements from two arctic sites; one on high coastal terrain near the Eureka weather station, on Ellesmere Island, Canada, and the other at the Summit Station near the peak of the Greenland icecap. This is a campaign to search for a site to deploy a new telescope for submillimeter Very Long Baseline Interferometry and THz astronomy in the northern hemisphere. Since 2011, we have obtained 3 months of winter data near Eureka, and about one year of data at the Summit Station. The results indicate that these sites offer a highly transparent atmosphere for observations in submillimeter wavelengths. The Summit Station is particularly excellent, and its zenith opacity at 225 GHz is statistically similar to the Atacama Large Milllimeter/submillimeter Array in Chile. In winter, the opacity at the Summit Station is even comparable to that observed at the South Pole. Comment: IAU Symp. 288, in press (4 pages, 3 figures) |
| Databáze: | arXiv |
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