Jan Högbom

Jan Arvid Högbom (born 1929) is a Swedish radio astronomer and astrophysicist.

Jan Högbom
Born
Jan Arvid Högbom

1929 (age 91–92)
Alma materUniversity of Cambridge (PhD)
Known forCLEAN algorithm
Scientific career
ThesisThe structure and magnetic field of the solar corona (1959)
Doctoral advisorMartin Ryle

Education

Högbom obtained his PhD in 1959 from the University of Cambridge[1] with Martin Ryle.

Career and research

Högbom is most well known for the development of the CLEAN algorithm for deconvolution of images created in radio astronomy, published in 1974.[2][3] 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][4][5]

These methods pioneered by Högbom are still extensively used and combined, e.g. in the imaging of the central supermassive black hole of the Messier 87 galaxy.[6][7]

Awards and honours

Högbom was elected member of the Royal Swedish Academy of Sciences in 1981.[8]

References
  1. Högbom, Jan A. (1959). The structure and magnetic field of the solar corona. cam.ac.uk (PhD thesis). University of Cambridge.
  2. Högbom, Jan A. (1974). "Aperture Synthesis with a Non-Regular Distribution of Interferometer Baselines". Astronomy and Astrophysics Supplement. 15: 417–426. Bibcode:1974A&AS...15..417H.
  3. Cornwell, T. J. (2009). "Hogbom's CLEAN algorithm. Impact on astronomy and beyond". Astronomy and Astrophysics. 500 (1): 65–66. doi:10.1051/0004-6361/200912148.
  4. "Högbom, Jan". scienceworld.wolfram.com.
  5. Högbom, Jan A. (2003). "Early Work in Imaging" (PDF). ASP Conference Series. 300: 17–20. Bibcode:2003ASPC..300...17H.
  6. The Event Horizon Telescope Collaboration (2019). "First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole". The Astrophysical Journal Letters. 875 (1): L1. arXiv:1906.11238. Bibcode:2019ApJ...875L...1E. doi:10.3847/2041-8213/ab0ec7.
  7. The Event Horizon Telescope Collaboration (2019). "First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole". The Astrophysical Journal Letters. 875 (1): L4. arXiv:1906.11241. Bibcode:2019ApJ...875L...4E. doi:10.3847/2041-8213/ab0e85. hdl:10150/633752.
  8. "Royal Swedish Academy of Sciences".
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