Christiaan Alexander Muller Explained
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Birth Date: | 18 April 1923 |
Birth Place: | Alkmaar, the Netherlands |
Fields: | Radio astronomy, Microwave technology |
Workplaces: | Kootwijk radio telescope, Dwingeloo Radio Observatory, Westerbork Synthesis Radio Telescope, Leiden University, University of Twente |
Education: | Engineering Physics |
Alma Mater: | Delft Institute of Technology, 1950 |
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Doctoral Students: | Brouw, Willem "Wim" Nicolaas; van Nieuwkoop, Jacob "Jaap" |
Known For: | Determination of the spiral structure of the Milky Way |
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Christiaan Alexander "Lex" Muller (Alkmaar, the Netherlands, 18 April 1923 - Delden, The Netherlands, August 8, 2004) was a Dutch radio engineer, radio astronomer and professor at Leiden University and the University of Twente.[1] [2] As the chief engineer he pioneered Dutch radio astronomy with the radio telescopes of Kootwijk, Dwingeloo (Dwingeloo Radio Observatory), and Westerbork (Westerbork Synthesis Radio Telescope), where he designed the receiver system.[3] Because of his work with Dutch astronomer Jan Oort on the determination of the spiral structure of the Milky Way using the 21 cm hydrogen radio line emission observed with the Kootwijk telescope, he was nominated for the Nobel Prize in Physics in 1956, 1957, 1958, and 1961 by Swedish astronomer Bertil Lindblad and Karl Ingve Öhman.[4] [5]
Muller was a professor with the Astronomy department at Leiden University from 1959 to 1972 in the field of Microwave technology and its application in astronomy, physics and chemistry (Dutch: Techniek van de microgolven en hun toepassing in de sterrenkunde, natuurkunde en scheikunde), where he mentored two PhD students, Wim Brouw and Jaap van Nieuwkoop.[6] His inaugural address of June 2, 1961 was entitled Microwave technology in astronomy (original Dutch: De microgolftechniek in de sterrenkunde). He moved to the department of Electrical engineering (Electrotechniek) at the University of Twente, where he taught Microwave technology from 1971 up to 1984.[7]
Publications
Muller's publications include:[8]
- Observation of a Line in the Galactic Radio Spectrum: The Interstellar Hydrogen Line at 1,420 Mc./sec., and an Estimate of Galactic Rotation . Nature . Muller . C. A. . J. H. . Oort . September 1951 . 168 . 357–358 . 4270 . 10.1038/168357a0.
- Absence of Hydrogen Radiation of Wavelength 21 cm. in the Sun . Nature . C. . de Jager . M. . Minnaert . C. A. . Muller . September 1951 . 168 . 391 . 4270 . 10.1038/168391b0.
- Spiral Structure and Interstellar Emission . Monthly Notes of the Astronomical Society of South Africa . J. H. . Oort . C. A. . Muller . 1952 . 11 . 65 .
- Muller . C. A. . 21-CM Absorption Effects in the Spectra of Two Strong Radio Sources . Astrophysical Journal . May 1957 . 125 . 830 . 10.1086/146361 .
- 75-cm Galactic Background Polarization: Progress Report. . Astronomical Journal . Gart . Westerhout . W. N. . Brouw . C. A. . Muller . J. . Tinbergen . March 1962 . 67 . 590 . 10.1086/108852.
- Galactic Background Polarization at 610 Mc/s . Nature . Muller . C. A. . 200 . 155–156 . 4902 . October 1963 . 10.1038/200155a0.
- The Synthesis Radio Telescope at Westerbork. The 21 CM Continuum Receiver System . Astronomy and Astrophysics . J. L. . Casse . C. A. . Muller . March 1974 . 31 . 333 .
- Book: Muller, C. A. . Early galactic radio astronomy at Kootwijk . Oort and the Universe. A Sketch of Oort's Research and Person. Liber Amicorum Presented to Jan Hendrik Oort on the Occasion of his 80th Birthday, 28 April, 1980 . Hugo . van Woerden . Willem N. . Brouw . Henk C. . van de Hulst . Dordrecht . D. Reidel Publishing Company . 1980 . 65.
External links
- Web site: Interview with Christiaan Alexander "Lex" Muller . 13 April 2024 . nrao.edu . National Radio Astronomy Observatory/Associated Universities Inc. Archives . Charlottesville, Virginia, US . Woodruff T. III . Sullivan . 23 August 1973. Oral history interview from audio cassette tape, recorded at Technische Hogeschool Twente (later University of Twente), Enschede, the Netherlands, duration 105 minutes.
Notes and References
- Web site: Christiaan Alexander Muller (1923-2004) . hjmwijers.nl . April 13, 2024 . Dutch . H. J. Michiel . Wijers . February 2018 . Deze kwartierstaat is onderdeel van een reeks kwartierstaten van Twentse hoogleraren. . This Ahnentafel is part of a series of pedigrees of Twente professors..
- Web site: Christiaan Alexander Muller . hoogleraren.universiteitleiden.nl . Leiden University . April 13, 2024 . Dutch.
- Web site: PDF . History of the Westerbork Synthesis Radio Telescope (WSRT). April 13, 2024 . rahist.nrao.edu . National Radio Astronomy Observatory . Richard . Strom . Leonid . Gurvits .
- Web site: Nomination archive. Christiaan Alexander (Lex) Muller . nobelprize.org . April 13, 2024 . Nobel Prize Outreach AB 2024.
- Book: van der Kruit, Pieter C. . Master of Galactic Astronomy: A Biography of Jan Hendrik Oort . 198, 202 . Springer . 2021 . 1242443499.
- Web site: Christiaan Alexander "Lex" Muller (1923-2004). astrogen.aas.org . American Astronomical Society .
- Web site: prof. C.A.Muller . utoday.nl . Dutch . 18 August 2004 . April 13, 2024 . University of Twente. Obituary.
- Web site: Your search returned 68 results . ui.adsabs.harvard.edu . Dutch . April 13, 2024 . Hardvard University. . Search for author:"muller, christiaan alexander" abs:"radio".