The Chromospheric Solar Millimeter-wave Cavity originates in the temperature minimum region

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dc.contributor.authorDe La Luz V.
dc.contributor.authorRaulin J.-P.
dc.contributor.authorLara A.
dc.date.accessioned2024-03-13T01:05:11Z
dc.date.available2024-03-13T01:05:11Z
dc.date.issued2013
dc.description.abstractWe present a detailed theoretical analysis of the local radio emission at the lower part of the solar atmosphere. To accomplish this, we have used a numerical code to simulate the emission and transport of high-frequency electromagnetic waves from 2 GHz up to 10 THz. As initial conditions, we used VALC, SEL05, and C7 solar chromospheric models. In this way, the generated synthetic spectra allow us to study the local emission and absorption processes with high resolution in both altitude and frequency. Associated with the temperature minimum predicted by these models, we found that the local optical depth at millimeter wavelengths remains constant, producing an optically thin layer that is surrounded by two layers of high local emission. We call this structure the Chromospheric Solar Millimeter-wave Cavity (CSMC). The temperature profile, which features temperature minimum layers and a subsequent temperature rise, produces the CSMC phenomenon. The CSMC shows the complexity of the relation between the theoretical temperature profile and the observed brightness temperature and may help us to understand the dispersion of the observed brightness temperature in the millimeter wavelength range. © 2013. The American Astronomical Society. All rights reserved..
dc.description.issuenumber2
dc.description.volume762
dc.identifier.doi10.1088/0004-637X/762/2/84
dc.identifier.issn1538-4357
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/36645
dc.relation.ispartofAstrophysical Journal
dc.rightsAcesso Aberto
dc.subject.otherlanguagemethods: numerical
dc.subject.otherlanguageradiation mechanisms: thermal
dc.subject.otherlanguageradiative transfer
dc.subject.otherlanguagestars: chromospheres
dc.subject.otherlanguageSun: chromosphere
dc.subject.otherlanguageSun: radio radiation
dc.titleThe Chromospheric Solar Millimeter-wave Cavity originates in the temperature minimum region
dc.typeArtigo
local.scopus.citations5
local.scopus.eid2-s2.0-84871565242
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84871565242&origin=inward
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