Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Moncef Derouich"'
Publikováno v:
Universe, Vol 8, Iss 12, p 613 (2022)
In solar and stellar atmospheres, atomic excitation by impact with electrons plays an important role in the formation of spectral lines. We make use of available experimental and theoretical cross-sections to calculate the excitation rates in s–p t
Externí odkaz:
https://doaj.org/article/a9b767fa4f3445b2ad23e8c00a0fa43b
Polarization Transfer Rates by Isotropic Collisions between Astrophysical SiO Molecule and Electrons
Publikováno v:
Universe, Vol 8, Iss 3, p 140 (2022)
We are interested in quantum calculations of polarization transfer (PT) rates due to collisions of the SiO molecule with the electrons. We determine the inelastic PT rates associated to the transitions: X 1Σ+→3Π; X 1Σ+→3Σ+; X 1Σ+→3Δ; X 1
Externí odkaz:
https://doaj.org/article/6b20265b098c4069a359a31451126352
Scattering of anisotropic radiation by atoms, ions or molecules is sufficient to generate linear polarization observable in stars and planets atmospheres, circumstellar environments, and in particular in the Sun's atmosphere. This kind of polarizatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b719cf1192b992928014522e31f679a3
Publikováno v:
The Astrophysical Journal. 915:122
Interpretations of the very rich second solar spectrum of the MgH molecule face serious problems owing to the complete lack of any information about rates of collisions between the MgH and hydrogen atoms. This work seeks to begin the process of filli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b52db6aac837934996a870923864887
https://doi.org/10.3847/1538-4357/ac06ce
https://doi.org/10.3847/1538-4357/ac06ce
Publikováno v:
Research in Astronomy and Astrophysics. 20:210
Existence of linear polarization, formed by anisotropic scattering in the photosphere, has been demonstrated observationally as well as theoretically and is called second solar spectrum (SSS). The SSS is distinguished by its structure, which is rich
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b95bdc642dfec61442f0ced22f55aea
https://doi.org/10.1088/1674-4527/20/12/210
https://doi.org/10.1088/1674-4527/20/12/210
Publikováno v:
Research in Astronomy and Astrophysics. 20:112
Observations of the second solar spectrum (SSS) revealed the existence of prominent linear polarization signals due to lines of the C2 molecule. Interpretation of the SSS is the only tool to obtain the weak and turbulent magnetic field which is wides
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bd5407070e5733c5190ab1598f037e1
https://doi.org/10.1088/1674-4527/20/7/112
https://doi.org/10.1088/1674-4527/20/7/112