Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101713
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dc.contributor.authorDudorov, A. E.en
dc.contributor.authorStepanov, C. E.en
dc.contributor.authorFomin, S. O.en
dc.contributor.authorKhaibrakhmanov, S. A.en
dc.date.accessioned2021-08-31T14:59:14Z-
dc.date.available2021-08-31T14:59:14Z-
dc.date.issued2019-
dc.identifier.citationMagnetic ionization-thermal instability / A. E. Dudorov, C. E. Stepanov, S. O. Fomin, et al. — DOI 10.1093/mnras/stz1335 // Monthly Notices of the Royal Astronomical Society. — 2019. — Vol. 487. — Iss. 1. — P. 942-951.en
dc.identifier.issn358711-
dc.identifier.otherFinal2
dc.identifier.otherAll Open Access, Green3
dc.identifier.otherhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85071180961&doi=10.1093%2fmnras%2fstz1335&partnerID=40&md5=936314837cdb5460480d34a22d8ff0c0
dc.identifier.otherhttp://arxiv.org/pdf/1905.05991m
dc.identifier.urihttp://hdl.handle.net/10995/101713-
dc.description.abstractLinear analysis of the stability of diffuse clouds in the cold neutral medium with uniform magnetic field is performed. We consider that gas in equilibrium state is heated by cosmic rays, X-rays, and electronic photoeffect on the surface of dust grains, and it is cooled by the collisional excitation of fine levels of the C II. Ionization by cosmic rays and radiative recombinations is taken into account. A dispersion equation is solved analytically in the limiting cases of small and large wavenumbers, as well as numerically in the general case. In particular cases, the dispersion equation describes thermal instability of Field (1965) and ionization-coupled acoustic instability of Flannery and Press (1979). We pay our attention to magnetosonic waves arising in the presence of magnetic field, in thermally stable region, 35 ≤ T ≤ 95 K and density n ≲ 103 cm-3. We have shown that these modes can be unstable in the isobarically stable medium. The instability mechanism is similar to the mechanism of ionization-coupled acoustic instability. We determine maximum growth rates and critical wavelengths of the instability of magnetosonic waves depending on gas temperature, magnetic field strength, and the direction of wave vector with respect to the magnetic field lines. The minimum growth time of the unstable slow magnetosonic waves in diffuse clouds is of 4- 60 Myr, minimum and the most unstable wavelengths lie in ranges 0.05-0.5 and 0.5-5 pc, respectively.We discuss the application of considered instability to the formation of small-scale structures and the generation of MHD turbulence in the cold neutral medium. © 2018 The Author(s).en
dc.format.mimetypeapplication/pdfen
dc.language.isoenen
dc.publisherOxford University Pressen
dc.rightsinfo:eu-repo/semantics/openAccessen
dc.sourceMon. Not. R. Astron. Soc.2
dc.sourceMonthly Notices of the Royal Astronomical Societyen
dc.subjectINSTABILITIESen
dc.subjectISM: CLOUDSen
dc.subjectMAGNETIC FIELDSen
dc.titleMagnetic ionization-thermal instabilityen
dc.typeArticleen
dc.typeinfo:eu-repo/semantics/articleen
dc.typeinfo:eu-repo/semantics/publishedVersionen
dc.identifier.doi10.1093/mnras/stz1335-
dc.identifier.scopus85071180961-
local.contributor.employeeDudorov, A.E., Theoretical Physics Department, Chelyabinsk State University, Br. Kashirinykh St., 129, Chelyabinsk, 454001, Russian Federation
local.contributor.employeeStepanov, C.E., Theoretical Physics Department, Chelyabinsk State University, Br. Kashirinykh St., 129, Chelyabinsk, 454001, Russian Federation
local.contributor.employeeFomin, S.O., Theoretical Physics Department, Chelyabinsk State University, Br. Kashirinykh St., 129, Chelyabinsk, 454001, Russian Federation
local.contributor.employeeKhaibrakhmanov, S.A., Theoretical Physics Department, Chelyabinsk State University, Br. Kashirinykh St., 129, Chelyabinsk, 454001, Russian Federation, Ural Federal University, 51 Lenin str., Ekaterinburg, 620000, Russian Federation
local.description.firstpage942-
local.description.lastpage951-
local.issue1-
local.volume487-
local.contributor.departmentTheoretical Physics Department, Chelyabinsk State University, Br. Kashirinykh St., 129, Chelyabinsk, 454001, Russian Federation
local.contributor.departmentUral Federal University, 51 Lenin str., Ekaterinburg, 620000, Russian Federation
local.identifier.pure10305266-
local.identifier.eid2-s2.0-85071180961-
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