On the speed and acceleration of electron beams triggering interplanetary type III radio bursts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10319591" target="_blank" >RIV/00216208:11320/15:10319591 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378289:_____/15:00447168

Výsledek na webu

<a href="http://dx.doi.org/10.1051/0004-6361/201425308" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201425308</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201425308" target="_blank" >10.1051/0004-6361/201425308</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On the speed and acceleration of electron beams triggering interplanetary type III radio bursts

Popis výsledku v původním jazyce

Aims. Type III radio bursts are intense radio emissions triggered by beams of energetic electrons often associated with solar flares. These exciter beams propagate outwards from the Sun along an open magnetic field line in the corona and in the interplanetary (IP) medium. Methods. We performed a statistical survey of 29 simple and isolated IP type III bursts observed by STEREO/Waves instruments between January 2013 and September 2014. We investigated their time-frequency profiles in order to derive thespeed and acceleration of exciter electron beams. Results. We show these beams noticeably decelerate in the IP medium. Obtained speeds range from similar to 0.02c up to similar to 0.35c depending on initial assumptions. It corresponds to electron energies between tens of eV and hundreds of keV, and in order to explain the characteristic energies or speeds of type III electrons (similar to 0.1c) observed simultaneously with Langmuir waves at 1 au, the emission of type III bursts near the

Název v anglickém jazyce

On the speed and acceleration of electron beams triggering interplanetary type III radio bursts

Popis výsledku anglicky

Aims. Type III radio bursts are intense radio emissions triggered by beams of energetic electrons often associated with solar flares. These exciter beams propagate outwards from the Sun along an open magnetic field line in the corona and in the interplanetary (IP) medium. Methods. We performed a statistical survey of 29 simple and isolated IP type III bursts observed by STEREO/Waves instruments between January 2013 and September 2014. We investigated their time-frequency profiles in order to derive thespeed and acceleration of exciter electron beams. Results. We show these beams noticeably decelerate in the IP medium. Obtained speeds range from similar to 0.02c up to similar to 0.35c depending on initial assumptions. It corresponds to electron energies between tens of eV and hundreds of keV, and in order to explain the characteristic energies or speeds of type III electrons (similar to 0.1c) observed simultaneously with Langmuir waves at 1 au, the emission of type III bursts near the

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Astronomy and Astrophysics

ISSN

0004-6361

e-ISSN

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Svazek periodika

580

Číslo periodika v rámci svazku

Aug

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

000360020200137

EID výsledku v databázi Scopus

2-s2.0-84940202185