Spatial quasi-periodic variations of the plasma density and magnetic field in zebra radio sources
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00548132" target="_blank" >RIV/67985815:_____/21:00548132 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1051/0004-6361/202039850" target="_blank" >https://doi.org/10.1051/0004-6361/202039850</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202039850" target="_blank" >10.1051/0004-6361/202039850</a>
Alternative languages
Result language
angličtina
Original language name
Spatial quasi-periodic variations of the plasma density and magnetic field in zebra radio sources
Original language description
We analyze seven zebra events in order to search for spatial variations in the plasma density and magnetic field in zebra-stripe sources.Methods. We used an improved method for estimating the gyroharmonic numbers of zebra-stripe frequencies. We compared observed zebra-stripe frequencies with those calculated in the zebra model. The differences in these frequencies vary and thus show spatial variations in the plasma density and magnetic field. In six out of seven analyzed zebras, we found a rather high correlation coefficient (about 0.7 and higher) between spatial variations in the density and magnetic field and a strictly periodic function. These density and magnetic field variations are explained by the torsional or sausage magnetoacoustic waves in the loop in which zebra-stripe sources are located. We present the wavelengths of these waves in dependence on the zebra frequency and estimate their periods.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - 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)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
0004-6361
e-ISSN
1432-0746
Volume of the periodical
6469
Issue of the periodical within the volume
February
Country of publishing house
FR - FRANCE
Number of pages
6
Pages from-to
A179
UT code for WoS article
000623239500002
EID of the result in the Scopus database
2-s2.0-85101587107