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Synchrotron radiation
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===History of detection=== This type of radiation was first detected in the [[Crab Nebula]] in 1956 by [[Jan Hendrik Oort]] and [[Theodore Walraven]],<ref>{{cite journal|last=Oort|first=J. H.|title=Polarization and composition of the Crab nebula|journal=Bulletin of the Astronomical Institutes of the Netherlands|volume=12|page=285|year=1956|bibcode=1956BAN....12..285O}}</ref> and a few months later in a jet emitted by [[Messier 87]] by [[Geoffrey Burbidge|Geoffrey R. Burbidge]].<ref>{{cite journal|last=Burbidge|first=G. R.|title=On Synchrotron Radiation from Messier 87|journal=The Astrophysical Journal|publisher=IOP Publishing|volume=124|year=1956|issn=0004-637X|doi=10.1086/146237|page=416|bibcode=1956ApJ...124..416B|doi-access=free}}</ref> It was confirmation of a prediction by [[Iosif Samuilovich Shklovsky|Iosif S. Shklovsky]] in 1953. However, it had been predicted earlier (1950) by [[Hannes Alfvén]] and Nicolai Herlofson.<ref>{{cite journal|last1=Alfvén|first1=H.|last2=Herlofson|first2=N.|title=Cosmic Radiation and Radio Stars|journal=Physical Review|publisher=APS|volume=78|issue=5|date=1 June 1950|issn=0031-899X|doi=10.1103/physrev.78.616|page=616|bibcode=1950PhRv...78..616A}}</ref> [[Solar flares]] accelerate particles that emit in this way, as suggested by R. Giovanelli in 1948 and described by J.H. Piddington in 1952.<ref>{{cite journal|last=Piddington|first=J. H.|title=Thermal Theories of the High-Intensity Components of Solar Radio-Frequency Radiation|journal=Proceedings of the Physical Society. Section B|publisher=IOP Publishing|volume=66|issue=2|year=1953|issn=0370-1301|doi=10.1088/0370-1301/66/2/305|pages=97–104|bibcode=1953PPSB...66...97P}}</ref> T. K. Breus noted that questions of priority on the history of astrophysical synchrotron radiation are complicated, writing: {{blockquote|In particular, the Russian physicist [[Vitaly Ginzburg|V.L. Ginzburg]] broke his relationships with [[Iosif Samuilovich Shklovsky|I.S. Shklovsky]] and did not speak with him for 18 years. In the West, [[Thomas Gold]] and Sir [[Fred Hoyle]] were in dispute with [[Hannes Alfvén|H. Alfven]] and N. Herlofson, while K.O. Kiepenheuer and G. Hutchinson were ignored by them.{{clarify|reason=Ignored by the first pair, the second pair, or all four? As I see things, Wikipedia editors don't get to simply wrap quotation marks around an interesting nugget of source material and then pass the muddiness through with no guidance to the casual reader provided.|date=October 2022}}<ref>Breus, T. K., "[http://adsabs.harvard.edu/abs/2001IAIss..26...88B Istoriya prioritetov sinkhrotronnoj kontseptsii v astronomii %t] (Historical problems of the priority questions of the synchrotron concept in astrophysics)" (2001) in ''Istoriko-Astronomicheskie Issledovaniya'', Vyp. 26, pp. 88–97, 262 (2001)</ref>}} [[Image:Crab Nebula.jpg|225px|thumb|The bluish glow from the central region of the [[Crab Nebula]] is due to synchrotron radiation.]]
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