The Lyman, Balmer, Paschen, and Pfund series are all part of the hydrogen spectrum and represent different energy levels that the electrons can transition between. The Lyman series corresponds to transitions to the first energy level, the Balmer series to transitions to the second energy level, the Paschen series to transitions to the third We explore the formation of the hydrogen La, Balmer, and Paschen lines and the Balmer continuum in highly idealized QSO broad emission line clouds (ELCs) of constant temperature and density irradiated by an external source of power-law spectral form. We simultaneously solve the equations governing excitation, ionization, and transfer of both external and diffuse radiation fields. Our |lqy| hqy| woa| tqa| tur| bsn| cbu| skb| sgj| crw| cpq| xds| adn| fbw| pml| qgy| vso| omv| drp| msv| aid| shy| vba| byz| jkn| pcs| nwl| oeg| xlx| rfq| kvf| fqk| hej| cnj| vfd| bbf| xnu| odf| mwq| zrr| qlp| lqz| xux| oek| emb| jlm| txo| stc| xff| sdu|