Hannes Alfvén

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Hannes Alfvén
University of Uppsala
Known for
Awards
Scientific career
FieldsElectrical engineering and Plasma physics
Institutions
Doctoral advisorManne Siegbahn
Carl Wilhelm Oseen
Doctoral students

Hannes Olof Gösta Alfvén (Swedish:

aurorae, the Van Allen radiation belts, the effect of magnetic storms on the Earth's magnetic field, the terrestrial magnetosphere, and the dynamics of plasmas in the Milky Way
galaxy.

Education

Alfvén received his PhD from the

University of Uppsala in 1934.[2]
His thesis was titled "Investigations of High-frequency Electromagnetic Waves."

Early years

In 1934, Alfvén taught

Royal Institute of Technology in Stockholm. In 1945, he acquired the nonappointive position of Chair of Electronics. His title was changed to Chair of Plasma Physics in 1963. From 1954 to 1955, Alfvén was a Fulbright Scholar at the University of Maryland, College Park. In 1967, after leaving Sweden and spending time in the Soviet Union, he moved to the United States. Alfvén worked in the departments of electrical engineering at both the University of California, San Diego and the University of Southern California
.

Later years

In 1991, Alfvén retired as professor of electrical engineering at the

Royal Institute of Technology
in Stockholm.

Alfvén spent his later adult life alternating between California and Sweden. He died at the age of 86.[4]

Research

In 1937, Alfvén argued that if plasma pervaded the universe, it could then carry electric currents capable of generating a galactic magnetic field.[5] After winning the Nobel Prize for his works in magnetohydrodynamics, he emphasized that:

In order to understand the phenomena in a certain plasma region, it is necessary to map not only the magnetic but also the electric field and the electric currents. Space is filled with a network of currents which transfer energy and momentum over large or very large distances. The currents often pinch to filamentary or surface currents. The latter are likely to give space, as also interstellar and intergalactic space, a cellular structure.[6]

His theoretical work on field-aligned electric currents in the aurora (based on earlier work by Kristian Birkeland) was confirmed in 1967,[7] these currents now being known as Birkeland currents.

British scientist

Sydney Chapman was a strong critic of Alfvén.[8] Many physicists regarded Alfvén as espousing unorthodox opinions[9] R. H. Stuewer noting that "... he remained an embittered outsider, winning little respect from other scientists even after he received the Nobel Prize..."[10]
and was often forced to publish his papers in obscure journals. Alfvén recalled:

When I describe [plasma phenomena] according to this formalism most referees do not understand what I say and turn down my papers. With the referee system which rules US science today, this means that my papers are rarely accepted by the leading US journals.[11]

Alfvén played a central role in the development of:

In 1939, Alfvén proposed the theory of magnetic storms and auroras and the theory of plasma dynamics in the Earth's magnetosphere. This was the paper rejected by the U.S. journal Terrestrial Magnetism and Atmospheric Electricity.

Applications of Alfvén's research in space science include:

Alfvén's views followed those of the founder of magnetospheric physics, Kristian Birkeland. At the end of the nineteenth century, Birkeland proposed (backed by extensive data) that electric currents flowing down along the Earth's magnetic fields into the atmosphere caused the aurora and polar magnetic disturbances.

Areas of technology benefiting from Alfvén's contributions include:

Contributions to astrophysics:

oscillations
) are named in his honor, and propagate at the Alfvén speed. Many of his theories about the solar system were verified as late as the 1980s through external measurements of cometary and planetary magnetospheres. However, Alfvén himself noted that astrophysical textbooks poorly represented known plasma phenomena:

A study of how a number of the most used textbooks in astrophysics treat important concepts such as

pinch effects, and circuits is made. It is found that students using these textbooks remain essentially ignorant of even the existence of these concepts, despite the fact that some of them have been well known for half a century (e.g, double layers, Langmuir, 1929; pinch effect, Bennet, 1934).[12]

Alfvén reported that of 17 of the most used textbooks on astrophysics, none mention the pinch effect, none mentioned critical ionization velocity, only two mentioned circuits, and three mentioned double layers.

Alfvén believed the problem with the

steady state theory
cosmologies.

Personal life

Alfvén was married for 67 years to his wife Kerstin (1910–1992). They raised five children, one boy and four girls. Their son became a physician, while one daughter became a writer and another a lawyer in Sweden. The writer was Inger Alfvén and is well known for her work in Sweden. The composer Hugo Alfvén was Hannes Alfvén's uncle.

Alfvén studied the

irreligious and critical of religion.[14][15] He spoke Swedish, English, German, French, and Russian, and some Spanish and Chinese. He expressed great concern about the difficulties of permanent high-level radioactive waste management."[16] Alfvén was also interested in problems in cosmology and all aspects of auroral physics, and used Schröder's well known book on aurora, Das Phänomen des Polarlichts.[17] Letters of Alfvén, Treder, and Schröder were published on the occasion of Treder's 70th birthday.[18][19]
The relationships between Hans-Jürgen Treder, Hannes Alfvén and Wilfried Schröder were discussed in detail by Schröder in his publications.

Alfvén died on 2 April, 1995 at Djursholm aged 86.

Awards and honours

The Hannes Alfvén Prize, awarded annually by the European Physical Society for outstanding contributions in plasma physics, is named after him. The asteroid 1778 Alfvén is named in his honour.

Awards

Alfvén was one of the few scientists who was a foreign member of both the

Soviet Academies of Sciences.[29]

Selected bibliography

For full list of publications see.[30]

Books
  • Cosmical Electrodynamics, International Series of Monographs on Physics, Oxford: Clarendon Press, 1950. (See also 2nd Ed. 1963, co-authored with Carl-Gunne Fälthammar.)
  • Worlds-Antiworlds: Antimatter in Cosmology (1966).
  • The Great Computer: A Vision (1968) (a political-scientific satire under the pen name Olof Johannesson; publ. Gollancz,
    ISBN 0-575-00059-7
    ).
  • Atom, Man, and the Universe: A Long Chain of Complications, W.H. Freeman and Company, 1969.
  • Living on the Third Planet, authored with Kerstin Alfvén, W.H. Freeman and Company, 1972.
    ISBN 0-7167-0340-8
    .
  • Cosmic Plasma, Astrophysics and Space Science Library, Vol. 82 (1981) Springer Verlag.
    ISBN 90-277-1151-8
  • Schröder, Wilfried, and Hans Jürgen Treder. 2007. Theoretical physics and geophysics: Recollections of Hans-Jürgen Treder (1928–2006). Potsdam: Science Editions.
Articles

See also

References

  1. ^ Walter Sullivan (April 5, 1995). "Hannes Alfven, 86, Founder Of Field in Physics, Is Dead". The New York Times.
  2. ISBN 978-0-8379-0225-8
    .
  3. ^ "History". Archived from the original on 27 April 2015. Retrieved 25 May 2012.
  4. ^ Sullivan, Walter (5 April 1995). "Hannes Alfven, 86, Founder Of Field in Physics, Is Dead". New York Times.
  5. ^ Hannes Alfvén, 1937 "Cosmic Radiation as an Intra-galactic Phenomenon", Ark. f. mat., astr. o. fys. 25B, no. 29.
  6. ISSN 0093-3813
    .
  7. Bibcode:1990IAUS..140..143P
    .
  8. ^ S. Chapman and J. Bartels, Geomagnetism," Vol. 1 and 2, Clarendon Press, Oxford, 1940.
  9. ISBN 978-0-471-52068-9
    .
  10. doi:10.1007/s00016-005-0251-5
    .
  11. ISBN 1-56000-033-3
  12. ^ Hannes Alfvén, "Double layers and circuits in astrophysics" (1986) IEEE Transactions on Plasma Science (ISSN 0093-3813), vol. PS-14, Dec. 1986, pp. 779–793.
  13. S2CID 122751100
    .
  14. ^ "Nuclear power is uniquely unforgiving: as Swedish Nobel physicist Hannes Alfvén said, "No acts of God can be permitted."" Amory Lovins, Inside NOVA – Nuclear After Japan: Amory Lovins, pbs.org.
  15. ISBN 978-1-86094-469-7
    . Alfven dismissed in his address religion as a "myth," and passionately criticized the big-bang theory for being dogmatic and violating basic standards of science, to be no less mythical than religion.
  16. doi:10.1080/00963402.1979.11458649
    .
  17. ^ Schröder, Wilfried . 2000. The Aurora in time. (Das Phänomen des Polarlichts). Darmstadt: Reproduction.
  18. ^ Schröder, Wilfried, and Hans Jürgen Treder. 1998. From Newton to Einstein: A festschrift in honour of the 70th birthday of Hans-Jürgen Treder. Bremen: Rönnebeck; Arbeitskreis Geschichte der Geophysik in der Deutschen Geophysikalischen Gesellschaft.
  19. ^ Schröder, Wilfried, and Hans Jürgen Treder. 1993. The earth and the universe: A festschrift in honour of Hans-Jürgen Treder. Bremen-Rönnebeck: Science Editions.
  20. ^ Sullivan, Walter (5 April 1995). "Hannes Alfven, 86, Founder Of Field in Physics, Is Dead". New York Times.
  21. ^ Sullivan, Walter (5 April 1995). "Hannes Alfven, 86, Founder Of Field in Physics, Is Dead". New York Times.
  22. S2CID 70640855
    .
  23. ^ Fälthammer, C. G. (1997). "Plasma physics from laboratory to cosmos-the life and achievements of Hannes Alfven".
    S2CID 123514422
    .
  24. ^ European Physical Society Honors Hannes Alfvén
  25. ^ "Book of Members, 1780–2010: Chapter A" (PDF). American Academy of Arts and Sciences. Retrieved 14 April 2011.
  26. ^ Background Notes on Presidents of Pugwash
  27. ^ LIST OF NOBEL LAUREATES WHO ARE ICSD/IAS MEMBERS
  28. ^ "APS Member History".
  29. ^ "Hannes Alfven". www.nasonline.org. Retrieved 2022-08-30.
  30. ^ Full list of publications

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