Hα excitation in the hydrogen near the earth
1964; Elsevier BV; Volume: 12; Issue: 2 Linguagem: Inglês
10.1016/0032-0633(64)90119-9
ISSN1873-5088
Autores Tópico(s)Atmospheric Ozone and Climate
ResumoIt is shown that it is possible to account for the Hα radiation observed in the night sky by radiative transport of Lyman-ß, if the nocturnal hydrogen content of the geocorona is of an optical thickness large enough to account for observed Lyman-α excitation. It is necessary to assume a large variation during the solar cycle in the depth of reversal of the solar Lyman-ß line to account for the Hα intensities reported whether the night-time Lyman-α is excited by single scattering in a geocoma or by multiple scattering in the geocorona. The variation needed is much larger for the geocomal explanation. The variation of Hα with solar elongation angle combined with the intensity data favors the geocoronal hypothesis. Укaзывaetcя, чto NaблюдaeмУю в NoчNoм Neбe paдиaцию Nα мoжNo oбъяcNиtь излУчaющим пepeNocoм ЛaймaNa B пpи Уcлoвии, чto иoчNoe coдepжaNиe вoдopoдa гeoкopoNы oпtичecкoй toлщиNы, дoctatoчNo для toгo, чtoбы oпpaвдatь Naблюдaeмoe вoзбУждeNиe ЛaймaNa α. tpeбУetcя пpeдвидetь бoльшиe измeNeNия в teчeNиe coлNeчNoгo циклa в глУбиNe oбpaщeNия лиNии B coлNeчNoгo. ЛaймaNa, чtoбы oбъяcNиtь cooбщeNNыe иNteNcивNoctи Nα, Neзaвиcимo ot toгo, вoзбкждaetcя ли NoчNoй ЛaймaN oдNим pacceяNиeм в гeoкopoNe или жe мNoгoчиcлeNNыми pacceяNиями. ИзмeNeNиe Nα пpи УдлиNeNии coлNeчNoгo Углa, coвмectNo c дaNNыми oб иNteNcивNoctи, гoвopиt в пoльзУ гипoteзы o гeoкopoNe.
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