Dynamics and Characteristics of Waves in the Zebra Radio Source

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00556100" target="_blank" >RIV/67985815:_____/22:00556100 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1007/s11207-022-01950-5" target="_blank" >https://doi.org/10.1007/s11207-022-01950-5</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11207-022-01950-5" target="_blank" >10.1007/s11207-022-01950-5</a>

Result language
angličtina
Original language name
Dynamics and Characteristics of Waves in the Zebra Radio Source
Original language description
We analyzed the 17 August 1998 zebra event and showed that some quasi-periodic oscillations modulate the zebra-stripe frequencies. We determined the period of these oscillations as P-n = 2.01 +/- 0.03 (in numbers of zebra stripes) and as P-f = 11.8 +/- 0.17 MHz. In the first part of the analyzed zebra, we found a stable density wave that slowly propagated with the frequency drift less than 0.4 MHz s(-1). Then, a stationary density wave appeared followed by a transformation of the waves to ones with longer periods. These long-period waves were recorded before and after the time interval when no zebra stripes were observed. We interpreted these density waves as magnetosonic waves. We calculated their wavelength and propagating velocity, considering two types of density models of the solar atmosphere. We also estimated the characteristic density and magnetic-field strength as N approximate to 9.2 x 10(8) cm(-1) and B approximate to 0.73 G, respectively. We found similar velocities derived from drifts of the density wave and velocities calculated from the density and magnetic-field strength considering gyro-harmonic numbers of zebra stripes.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
<a href="/en/project/GA20-07908S" target="_blank" >GA20-07908S: Three-dimensional magnetic reconnection in early phases of solar flares and eruptions: Observations and the Standard Model in 3D</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)