S. B. Derteev, M. E. Sapraliev, D. B. Bembitov, B. B. Mikhalyaev
{"title":"Propagation of Acoustic Waves in Coronal Plasma","authors":"S. B. Derteev, M. E. Sapraliev, D. B. Bembitov, B. B. Mikhalyaev","doi":"10.1134/S0016793223080078","DOIUrl":null,"url":null,"abstract":"<p>The influence of the effects of thermal conduction and heating/radiative losses on the propagation of acoustic waves in a rarefied high-temperature plasma is studied. A constant heating function is chosen, and an interpolation is used for the radiative-loss function, which is based on the values found by the CHIANTI 10 code. Waves are analyzed in a linear approximation based on the dispersion relation. The input parameters in the problem are the plasma temperature and density and the output parameters are the period of oscillations and their damping time. Conversely, having observational data on compression waves, one can pose the problem of finding the parameters of the coronal plasma from the oscillation parameters. The situations in which the effect of the misbalance between heating and losses can, along with thermal conductivity, play a significant role in wave damping are shown. The temperature ranges at which instability and aperiodic damping of acoustic oscillations are possible are determined.</p>","PeriodicalId":55597,"journal":{"name":"Geomagnetism and Aeronomy","volume":"63 8","pages":"1313 - 1317"},"PeriodicalIF":0.7000,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geomagnetism and Aeronomy","FirstCategoryId":"89","ListUrlMain":"https://link.springer.com/article/10.1134/S0016793223080078","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
引用次数: 0
Abstract
The influence of the effects of thermal conduction and heating/radiative losses on the propagation of acoustic waves in a rarefied high-temperature plasma is studied. A constant heating function is chosen, and an interpolation is used for the radiative-loss function, which is based on the values found by the CHIANTI 10 code. Waves are analyzed in a linear approximation based on the dispersion relation. The input parameters in the problem are the plasma temperature and density and the output parameters are the period of oscillations and their damping time. Conversely, having observational data on compression waves, one can pose the problem of finding the parameters of the coronal plasma from the oscillation parameters. The situations in which the effect of the misbalance between heating and losses can, along with thermal conductivity, play a significant role in wave damping are shown. The temperature ranges at which instability and aperiodic damping of acoustic oscillations are possible are determined.
期刊介绍：
Geomagnetism and Aeronomy is a bimonthly periodical that covers the fields of interplanetary space; geoeffective solar events; the magnetosphere; the ionosphere; the upper and middle atmosphere; the action of solar variability and activity on atmospheric parameters and climate; the main magnetic field and its secular variations, excursion, and inversion; and other related topics.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
