Determination of plasma parameters in solar zebra radio sources

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F15%3A00449312" target="_blank" >RIV/67985815:_____/15:00449312 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1051/0004-6361/201526785" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201526785</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201526785" target="_blank" >10.1051/0004-6361/201526785</a>

Result language

angličtina

Original language name

Determination of plasma parameters in solar zebra radio sources

Original language description

We present a new method for determining the magnetic field strength and plasma density in the solar zebra radio sources. Using the double plasma resonance (DPR) model of the zebra emission, we analytically derived the equations for computing the gyroharmonic number s of selected zebra lines and then solved these equations numerically. The method was successfully tested on artificially generated zebras and then applied to observed ones. The magnetic field strength and plasma density in the radio sources were determined. Simultaneously, we evaluated the parameter L-nb = 2(Lb/)(2(Ln)-L-b), where L-n and L-b are the characteristic scale-heights of the plasma density and magnetic field strength in the zebra source, respectively. In models with smaller density gradients, such as those with a barometric density profile, the microwave zebras cannot be produced owing to the strong bremsstrahlung and cyclotron absorptions. We also show that our DPR model is able to explain the zebras with frequency-equidistant zebra lines.

Czech name

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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

<a href="/en/project/GAP209%2F12%2F0103" target="_blank" >GAP209/12/0103: Radio and X-ray diagnostics of primary-energy-release processes in solar flares and their numerical simulations</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

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

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Volume of the periodical

581

Issue of the periodical within the volume

September

Country of publishing house

FR - FRANCE

Number of pages

6

Pages from-to

"A115/1"-"A115/6"

UT code for WoS article

000361803900115

EID of the result in the Scopus database

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