Astronomy:Nobeyama radio observatory

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Nobeyama radio observatory
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The Nobeyama Radio Observatory (NRO) is an astronomical observatory located near Minamimaki, Nagano, Japan at an elevation of 1350 metres. It is a division of the National Astronomical Observatory of Japan (NAOJ) and consists of four radio instruments.[1]

  • The 45-m Radio Telescope: A 45-m single-dish radio telescope that operates in short-millimetre wavelengths. Its receivers operate at 1, 2, 3.75, 9.4, 17, 35, and 80 GHz in both left and right polarizations.[2]
  • The Nobeyama Millimetre Array (NMA): A millimetre interferometer consisting of six 10-m diameter telescopes.[3]
  • The Nobeyama Radioheliograph (NoRH): An array of eighty-four, 80 cm antennas dedicated to solar observations. Their receivers operate at 17–34 GHz in both left and right polarizations.[4][5][6]
  • The Nobeyama Radio Polarimeters: A set of radio telescopes that continuously observes the full Sun at the frequencies of 1, 2, 3.75, 9.4, 17, 35, and 80 GHz, at left and right circular polarization.[7][8][9]

References

  1. ↑ "Information of Telescopes". Nobeyama Radio Observatory. https://www.nro.nao.ac.jp/en/public/teles.html. 
  2. ↑ Ukita, N.; Tsuboi, H. (May 1994). "A 45-m telescope with a surface accuracy of 65 μm". Proceedings of the IEEE 82 (5): 725–733. doi:10.1109/5.284739. Bibcode: 1994IEEEP..82..725U. 
  3. ↑ Morita, Koh-Ichiro (1994). "The Nobeyama Millimeter Array". International Astronomical Union Colloquium. 140. pp. 18-26. doi:10.1017/S0252921100019035. 
  4. ↑ "Nobeyama Radioheliograph". National Astronomical Observatory of Japan. https://solar.nro.nao.ac.jp/norh/html/introduction.html. 
  5. ↑ Nakajima, H.; Nishio, M.; Enome, S.; Shibasaki, K.; Takano, T.; Hanaoka, Y.; Torii, C.; Sekiguchi, H. et al. (May 1994). "The Nobeyama Radioheliograph". Proceedings of the IEEE 82 (5): 705–713. doi:10.1109/5.284737. Bibcode: 1994IEEEP..82..705N. 
  6. ↑ Takano, Toshiaki; Nakajima, Hiroshi; Enome, Shinzo; Shibasaki, Kiyoto; Nishio, Masanori; Hanaoka, Yoichiro; Shiomi, Yasuhiko; Sekiguchi, Hideaki et al. (1997). "An Upgrade of Nobeyama Radioheliograph to a Dual-Frequency (17 and 34 GHz) System". in Trottet, Gerard. CESRA Workshop. 483. pp. 183–191. doi:10.1007/BFb0106457. Bibcode: 1997LNP...483..183T. 
  7. ↑ "Nobeyama Radio Polarimeters". National Astronomical Observatory of Japan. https://solar.nro.nao.ac.jp/norp/html/introduction.html. 
  8. ↑ Nakajima, Hiroshi; Sekiguchi, Hideaki; Sawa, Masaki; Kai, Keizo; Kawashima, Susumu; Kosugi, Takeo; Shibuya, Nobutaka; Shinohara, Noriyuki et al. (25 March 1985). "The Radiometer and Polarimeters at 80, 35, and 17 GHz for Solar Observations at Nobeyama". Publications of the Astronomical Society of Japan 37 (1): 163–170. doi:10.1093/pasj/37.1.163. Bibcode: 1985PASJ...37..163N. https://articles.adsabs.harvard.edu/pdf/1985PASJ...37..163N. 
  9. ↑ Shimojo, Masumi; Iwai, Kazumasa (January 2023). "Over seven decades of solar microwave data obtained with Toyokawa and Nobeyama Radio Polarimeters". Geoscience Data Journal 10 (1): 114–129. doi:10.1002/gdj3.165. Bibcode: 2023GSDJ...10..114S. 



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