Pulse-beam heating of deep atmospheric layers, their oscillations and shocks modulating the flare reconnection
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F19%3A43899188" target="_blank" >RIV/60076658:12310/19:43899188 - isvavai.cz</a>
Alternative codes found
RIV/67985815:_____/19:00511188
Result on the web
<a href="https://www.aanda.org/articles/aa/abs/2019/05/aa35188-19/aa35188-19.html" target="_blank" >https://www.aanda.org/articles/aa/abs/2019/05/aa35188-19/aa35188-19.html</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201935188" target="_blank" >10.1051/0004-6361/201935188</a>
Alternative languages
Result language
angličtina
Original language name
Pulse-beam heating of deep atmospheric layers, their oscillations and shocks modulating the flare reconnection
Original language description
Aims. We study the processes occurring after a sudden heating of deep atmospheric layers at the flare arcade footpoints, which is assumed to be caused by particle beams. Methods. For the numerical simulations we adopt a 2D magnetohydrodynamic (MHD) model, in which we solve a full set of the time-dependent MHD equations by means of the FLASH code, using the adaptive mesh refinement (AMR) method. Results. In the initial state we consider a model of the solar atmosphere with densities according to the VAL-C model and the magnetic field arcade having the X-point structure above, where the magnetic reconnection is assumed. We found that the sudden pulse-beam heating of deep atmospheric layers at the flare arcade footpoints generates two magnetohydrodynamic shocks, one propagating upwards and the second propagating downwards in the solar atmosphere. The downward-moving shock is reflected at deep and dense atmospheric layers and triggers oscillations of these layers. The period of these oscillations in our case is about 174 s. These oscillations generate the upward-moving magnetohydrodynamic waves that can influence the flare magnetic reconnection in a quasi-periodic way. These processes require a sudden heating in very localized regions in dense atmospheric layers; therefore, they can be also associated with seismic waves.
Czech name
—
Czech description
—
Classification
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)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
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
1432-0746
e-ISSN
—
Volume of the periodical
625
Issue of the periodical within the volume
APR 29 2019
Country of publishing house
FR - FRANCE
Number of pages
7
Pages from-to
—
UT code for WoS article
000466311600001
EID of the result in the Scopus database
2-s2.0-85065232225