Can microbunch instability on solar flare accelerated electron beams account for bright broadband coherent synchrotron microwaves?

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dc.contributor.authorKaufmann P.
dc.contributor.authorRaulin J.-P.
dc.date.accessioned2024-03-13T01:42:09Z
dc.date.available2024-03-13T01:42:09Z
dc.date.issued2006
dc.description.abstractThe physical processes producing bright broadband coherent synchrotron radiation (CSR) bursts in laboratory accelerators are proposed to happen also in solar flares, bringing a plausible explanation to serious interpretation constraints raised by the discovery of a solar flare sub-mm-wave spectral emission component peaking in the terahertz (THz) range simultaneous to the well-known microwaves component. The THz component is due to incoherent synchrotron radiation (ISR) produced by a beam of ultrarelativistic electrons. Beam density perturbations, on a scale of the order of or smaller than the emitting wavelength, sets a microbunch instability producing the intense CSR at lower frequencies. Hard x-ray/γ-ray emissions may include a significant synchrotron emission component from the same ISR spectrum, bringing a new possibility to explain the so called "solar flare electron number paradox." © 2005 American Institute of Physics.
dc.description.issuenumber7
dc.description.volume13
dc.identifier.doi10.1063/1.2244526
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/37770
dc.relation.ispartofPhysics of Plasmas
dc.rightsAcesso Restrito
dc.titleCan microbunch instability on solar flare accelerated electron beams account for bright broadband coherent synchrotron microwaves?
dc.typeArtigo
local.scopus.citations26
local.scopus.eid2-s2.0-33746820149
local.scopus.subjectCoherent synchrotron radiation (CSR)
local.scopus.subjectLaboratory accelerators
local.scopus.subjectSynchrotron emission component
local.scopus.subjectUltrarelativistic electrons
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33746820149&origin=inward
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