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Recent results of zebra patterns in solar radio bursts
Chernov Gennady P1
2010
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume10Issue:9Pages:821
AbstractThis review covers the most recent experimental results and theoretical research on zebra patterns (ZPs) in solar radio bursts. The basic attention is given to events with new peculiar elements of zebra patterns received over the last few years. All new properties are considered in light of both what was known earlier and new theoretical models. Large-scale ZPs consisting of small-scale fiber bursts could be explained by simultaneous inclusion of two mechanisms when whistler waves "highlight" the levels of double plasma resonance (DPR). A unique fine structure was observed in the event on 2006 December 13: spikes in absorption formed dark ZP stripes against the absorptive type III-like bursts. The spikes in absorption can appear in accordance with well known mechanisms of absorptive bursts. The additional injection of fast particles filled the loss-cone (breaking the loss-cone distribution), and the generation of the continuum was quenched at these moments. The maximum absorptive effect occurs at the DPR levels. The parameters of millisecond spikes are determined by small dimensions of the particle beams and local scale heights in the radio source. Thus, the DPR model helps to understand several aspects of unusual elements of ZPs. However, the simultaneous existence of several tens of the DPR levels in the corona is impossible for any realistic profile of the plasma density and magnetic field. Three new theories of ZPs are examined. The formation of eigenmodes of transparency and opacity during the propagation of radio waves through regular coronal inhomogeneities is the most natural and promising mechanism. Two other models (nonlinear periodic space charge waves and scattering of fast protons on ion-sound harmonics) could happen in large radio bursts.
KeywordCYCLOTRON WAVE INSTABILITY DOUBLE PLASMA RESONANCE FINE-STRUCTURE MAGNETIC RECONNECTION MICROWAVE-BURSTS SUPERFINE STRUCTURE DOT-EMISSIONS AD LEONIS FLUX ROPE APRIL 15 Sun: general Sun: flare Sun: radio radiation
Language英语
Funding Project[Chinese Academy of Sciences] ; [NSF of China] ; [Russian Foundation of Basic Research (RFBR)]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/71055
Collection中国科学院国家天文台
Affiliation1.中国科学院国家天文台
2.Russian Acad Sci IZMIRAN, Pushkov Institute Terr Magnetism Ionosphere & Radio Wa, Troitsk 142190, Moscow Region, Russia
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Chernov Gennady P. Recent results of zebra patterns in solar radio bursts[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2010,10(9):821.
APA Chernov Gennady P.(2010).Recent results of zebra patterns in solar radio bursts.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,10(9),821.
MLA Chernov Gennady P."Recent results of zebra patterns in solar radio bursts".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 10.9(2010):821.
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