GENERATION OF MAGNETIC FIELDS IN COSMOLOGICAL SHOCKS

MIKHAIL V. MEDVEDEV; LUIS O. SILVA; MASSIMILIANO FIORE; RICARDO A. FONSECA; WARREN B. MORI

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GENERATION OF MAGNETIC FIELDS IN COSMOLOGICAL SHOCKS KCI 등재 SCOPUS

MIKHAIL V. MEDVEDEV, LUIS O. SILVA, MASSIMILIANO FIORE, RICARDO A. FONSECA, WARREN B. MORI

언어ENG
URLhttps://db.koreascholar.com/Article/Detail/386843

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천문학회지 (Journal of The Korean Astronomical Society)

제37권 제5호 (2004.12)
pp.533-541

한국천문학회 (Korean Astronomical Society)

초록

The origin of magnetic fields in the universe remains an outstanding problem in cosmology. We propose that these fields are produced by shocks during the large-scale structure formation. We discuss the mechanism of the field generation via the counter-streaming (Weibel) instability. We also show that these Weibel-generated fields are long-lived and weakly coupled to dissipation. Subsequent field amplification by the intra-cluster turbulence may also take place, thus maintaining the magnetic energy density close to equipartition.

키워드

cosmology: large scale structure - magnetic fields - shock waves

저자

MIKHAIL V. MEDVEDEV(Department of Physics and Astronomy, University of Kansas/Institute for Nuclear Fusion, RRC 'Kurchatov Institute')
LUIS O. SILVA(GoLP/Centro de Fisica de Plasmas, Instituto Superior Tecnico)
MASSIMILIANO FIORE(GoLP/Centro de Fisica de Plasmas, Instituto Superior Tecnico)
RICARDO A. FONSECA(GoLP/Centro de Fisica de Plasmas, Instituto Superior Tecnico)
WARREN B. MORI(Department of Physics and Astronomy, University of California)

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