Abstract

The article considers the poorly studied states of hydrogen gas (called here “quasi-resonant”) with anomalously high intensity ratios of the lines in the Balmer series, \(I({{{\text{H}}}_{\alpha }}){\text{/}}I({{{\text{H}}}_{\beta }})\). It is shown that such states arise in the case of large optical thicknesses of the emitting gas occurring at the frequencies of the Balmer lines, when the gas tends to a thermalization state. The influence on the formation of such states of basic model parameters as temperature, atomic density, and the characteristic size of the emitting region, as well as the presence of external radiation, is studied on simple models. It is shown that quasi-resonant states can exist in the magnetospheres of T Tauri stars at moderate accretion rates.

中文翻译：

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氢气的准共振态

摘要

本文考虑了对Balmer系列中的线的强度比异常高的氢气的研究状态不佳（此处称为“准谐振”），\（I（{{{\ text {H}}} _ {\ alpha }}）{\ text {/}} I（{{{\ text {H}}} _ {\ beta}}）\）。可以看出，当气体趋于热化状态时，以巴尔默线的频率出现的发射气体的光学厚度较大时，会出现这种状态。在简单的模型上研究了对基本模型参数（例如温度，原子密度和发射区域的特征尺寸）以及外部辐射的存在等状态形成的影响。结果表明，在T Tauri星的磁层中可以以中等的吸收速率存在准共振态。