Jan Högbom
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Jan Arvid Högbom, born 1929, is a Swedish radio astronomer. He obtained his PhD in 1959 from the University of Cambridge[1] with Martin Ryle. Högbom was elected member of the Royal Swedish Academy of Sciences in 1981.
He is most well known for the development of the CLEAN algorithm for deconvolution of images created in radio astronomy,[2] published in 1974.[3][4] This allows the use of arrays of small antennae, generating incomplete sampling data, to effectively simulate a much larger aperture. Högbom was also the first to use Earth rotation synthesis imaging in a small test.[1][5][6]
These methods pioneered by Högbom are still extensively used and combined, e.g. in the imaging of the central supermassive black hole of the M87 galaxy.[7][8]
References
- ^ a b Högbom, Jan A. (1959). The structure and magnetic field of the solar corona. Cambridge: PhD thesis, University of Cambridge.
- ^ Cornwell, T. J. (June 2009). "Hogbom's CLEAN algorithm. Impact on astronomy and beyond" (PDF). A&A. 500 (1): 65–66. doi:10.1051/0004-6361/200912148.
- ^ Högbom, Jan A. (1974). "Aperture Synthesis with a Non-Regular Distribution of Interferometer Baselines". Astronomy and Astrophysics Supplement. 15: 417–426.
- ^ Cornwell, T.J. "Hogbom's CLEAN algorithm. Impact on astronomy and beyond". Astronomy & Astrophysics. 500: 65–66.
- ^ "Högbom, Jan". scienceworld.wolfram.com.
{{cite web}}: Cite has empty unknown parameter:|dead-url=(help) - ^ Högbom, Jan A. "Early Work in Imaging" (PDF). ASP Conference Series,. 300: 17–20.
{{cite journal}}: CS1 maint: extra punctuation (link) - ^ The Event Horizon Telescope Collaboration. "First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole". The Astrophysical Journal Letters.
- ^ The Event Horizon Telescope Collaboration. "First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole". The Astrophysical Journal Letters.