Temperature dependent growth rates of the upper-hybrid waves
and solar radio zebra patterns

J 2017

Temperature dependent growth rates of the upper-hybrid waves and solar radio zebra patterns

BENÁČEK, Jan, Marian KARLICKÝ and Leonid V. YASNOV

Basic information

Original name

Temperature dependent growth rates of the upper-hybrid waves and solar radio zebra patterns

Authors

BENÁČEK, Jan (203 Czech Republic, belonging to the institution), Marian KARLICKÝ (203 Czech Republic) and Leonid V. YASNOV (643 Russian Federation)

Edition

Astronomy & Astrophysics, LES ULIS CEDEX A, EDP SCIENCES, 2017, 1432-0746

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

France

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

ArXiv

Impact factor

Impact factor: 5.565

RIV identification code

RIV/00216224:14310/17:00096271

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1051/0004-6361/201629717

UT WoS

000394465000105

Keywords in English

Sun radio radiation; instabilities; methods analytical

Abstract

V originále

We found that the growth-rate maxima of the upper-hybrid waves for non-zero temperatures of both the hot and background plasma are shifted towards lower frequencies comparing to the zero temperature case. This shift increases with an increase of the harmonic number $s$ of the electron cyclotron frequency and temperatures of both hot and background plasma components. We show how this shift changes values of the magnetic field strength estimated from observed zebras. We confirmed that for a relatively low hot electron temperature, the dependence of growth rate vs. both the ratio of the electron plasma and electron cyclotron frequencies expresses distinct peaks, and by increasing this temperature these peaks become smoothed. We found that in some cases, the values of wave number vector components for the upper-hybrid wave for the maximal growth rate strongly deviate from their analytical estimations. We confirmed the validity of the assumptions used when deriving model equations.

Citovat

BENÁČEK, Jan, Marian KARLICKÝ and Leonid V. YASNOV. Temperature dependent growth rates of the upper-hybrid waves and solar radio zebra patterns. Astronomy & Astrophysics. LES ULIS CEDEX A: EDP SCIENCES, 2017, vol. 598, February, p. nestránkováno, 6 pp. ISSN 1432-0746. Available from: https://dx.doi.org/10.1051/0004-6361/201629717.

@article{1375082,
   author = {Benáček, Jan and Karlický, Marian and Yasnov, Leonid V.},
   article_location = {LES ULIS CEDEX A},
   article_number = {February},
   doi = {http://dx.doi.org/10.1051/0004-6361/201629717},
   keywords = {Sun radio radiation; instabilities; methods analytical},
   language = {eng},
   issn = {1432-0746},
   journal = {Astronomy & Astrophysics},
   title = {Temperature dependent growth rates of the upper-hybrid waves and solar radio zebra patterns},
   url = {https://arxiv.org/abs/1701.06520},
   volume = {598},
   year = {2017}
}

TY  - JOUR
ID  - 1375082
AU  - Benáček, Jan - Karlický, Marian - Yasnov, Leonid V.
PY  - 2017
TI  - Temperature dependent growth rates of the upper-hybrid waves and solar radio zebra patterns
JF  - Astronomy & Astrophysics
VL  - 598
IS  - February
SP  - nestránkováno
EP  - nestránkováno
PB  - EDP SCIENCES
SN  - 14320746
KW  - Sun radio radiation
KW  - instabilities
KW  - methods analytical
UR  - https://arxiv.org/abs/1701.06520
L2  - https://arxiv.org/abs/1701.06520
N2  - We found that the growth-rate maxima of the upper-hybrid waves for non-zero temperatures of both the hot and background plasma are shifted towards lower frequencies comparing to the zero temperature case. This shift increases with an increase of the harmonic number $s$ of the electron cyclotron frequency and temperatures of both hot and background plasma components. We show how this shift changes values of the magnetic field strength estimated from observed zebras. We confirmed that for a relatively low hot electron temperature, the dependence of growth rate vs. both the ratio of the electron plasma and electron cyclotron frequencies expresses distinct peaks, and by increasing this temperature these peaks become smoothed. We found that in some cases, the values of wave number vector components for the upper-hybrid wave for the maximal growth rate strongly deviate from their analytical estimations. We confirmed the validity of the assumptions used when deriving model equations.
ER  -

BENÁČEK, Jan, Marian KARLICKÝ and Leonid V. YASNOV. Temperature dependent growth rates of the upper-hybrid waves and solar radio zebra patterns. \textit{Astronomy \&{} Astrophysics}. LES ULIS CEDEX A: EDP SCIENCES, 2017, vol.~598, February, p.~nestránkováno, 6 pp. ISSN~1432-0746. Available from: https://dx.doi.org/10.1051/0004-6361/201629717.

Detailed Information on Publication Record