W.N. Christiansen and the initial Australian investigation of the 21cm hydrogen line
Wendt, Harry, Orchiston, Wayne, and Slee, Bruce (2008) W.N. Christiansen and the initial Australian investigation of the 21cm hydrogen line. Journal of Astronomical History and Heritage, 11 (3). pp. 185-193.
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On 25 March 1951 H.I. Ewen was working on his doctoral thesis at Harvard University when he detected the 21cm hydrogen emission-line (H-line). Within four months of the initial detection, small groups working in Australia and in The Netherlands were able to confirm Ewen’s detection, thereby heralding a new chapter in international radio astronomy. This paper examines the Australian efforts that culminated in the confirmation of the H-line detection, and led to an initial survey of the southern Milky Way which produced the first indication of the spiral arm structure of our Galaxy.
|Item Type:||Article (Refereed Research - C1)|
Reproduced with permission from Journal of Astronomical History and Heritage.
|Keywords:||radio astronomy, hydrogen emission-line, Division of Radiophysics, W.N. Christiansen, J.V. Hindman|
|FoR Codes:||02 PHYSICAL SCIENCES > 0299 Other Physical Sciences > 029999 Physical Sciences not elsewhere classified @ 100%|
|SEO Codes:||97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 100%|
|Deposited On:||18 Jan 2010 11:56|
|Last Modified:||14 Mar 2013 13:49|
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