Quasi-periodic processes in the flare loop generated by sudden temperature enhancements at loop footpoints

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F16%3A00463105" target="_blank" >RIV/67985815:_____/16:00463105 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1051/0004-6361/201527306" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201527306</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201527306" target="_blank" >10.1051/0004-6361/201527306</a>

Result language
angličtina
Original language name
Quasi-periodic processes in the flare loop generated by sudden temperature enhancements at loop footpoints
Original language description
During the impulsive flare phase, the plasma at the flare loop footpoints is rapidly heated by particle beams. In the present paper, we study processes that occur after this sudden heating in a two-dimensional magnetic loop. We consider a model of the solar atmosphere with a symmetric magnetic loop. The length of this loop in the corona is approximately 21 : 5 Mm. At both loop footpoints, at the transition region, we initiate the Gaussian temperature (pressure) perturbation with the maximum temperature 14, 7, or 3.5 times higher than the unperturbed temperature. In the corona, the perturbations produce supersonic blast shocks with the Mach number of about 1.1, but well below Alfven velocities. We consider cases with the same perturbations at both footpoints (symmetric case) and one with different perturbations (asymmetric case). In the symmetric case, the shocks move along both loop legs upwards to the top of the loop, where they interact and form a transient compressed region.n
Czech name
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Czech description
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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)

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

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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