Chains of type-I radio bursts and drifting pulsation structures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F17%3A00479161" target="_blank" >RIV/67985815:_____/17:00479161 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1051/0004-6361/201629652" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201629652</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201629652" target="_blank" >10.1051/0004-6361/201629652</a>

Result language

angličtina

Original language name

Chains of type-I radio bursts and drifting pulsation structures

Original language description

Owing to similarities of chains of type-I radio bursts and drifting pulsation structures the question arises as to whether both these radio bursts are generated by similar processes. Characteristics and parameters of both these radio bursts are compared. We present examples of both types of bursts and show their similarities and di ff erences. Then, for chains of type-I bursts, a similar model as for drifting pulsation structures (DPSs) is proposed. We show that, similar to the DPS model, the chains of type-I bursts can be generated by the fragmented magnetic reconnection associated with plasmoid interactions. To support this new model of chains of type-I bursts, we present an e ff ect of merging two plasmoids to form one larger plasmoid on the radio spectrum of DPS. This process can also explain the ` wavy' appearance of some chains of type-I bursts. Further, we show that the chains of type-I bursts with the wavy appearance can be used for estimation of the magnetic field strength in their sources. We think that di ff erences of chains of type-I bursts and DPSs are mainly owing to di ff erent regimes of the magnetic field reconnection. While in the case of chains of type-I bursts, the magnetic reconnection and plasmoid interactions are in the quasi-separatrix layer of the active region in more or less quasi-saturated regime, in the case of DPSs, observed in the impulsive phase of eruptive flares, the magnetic reconnection and plasmoid interactions are in the current sheet formed under the flare magnetic rope, which moves upwards and forces this magnetic reconnection.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Astronomy & Astrophysics

ISSN

1432-0746

e-ISSN

—

Volume of the periodical

602

Issue of the periodical within the volume

June

Country of publishing house

FR - FRANCE

Number of pages

7

Pages from-to

"A122/1"-"A122/7"

UT code for WoS article

000404648300039

EID of the result in the Scopus database

2-s2.0-85021637928