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astro-ph2006★ 1 cited
Two-Photon Absorption by Hydrogen Molecules: Origin of the 2175 Angstrom Astronomical Band?
Peter P. Sorokin, James H. Glownia
The near UV spectra of OB stars in our galaxy are often dominated by a very broad extinction band peaking at ~2175 Angstroms. Forty years after its discovery, the origin of this ba…
astro-ph2001
H-atom laser without inversion (LWI) in space: a possible explanation for the intense, narrow-band, H(alpha) emission frequently observed in reddened early-type stars
P. P. Sorokin, J. H. Glownia
A model is suggested to explain the frequently observed presence of intense, narrow-band, H(alpha) emission lines in the optical spectra of reddened, early-type stars (e.g. HD 4417…
astro-ph2000
The Importance of Nonlinear H2 Photoexcitiation in Strongly Irradiated PDRs
P. P. Sorokin, J. H. Glownia, R. T. Hodgson
It is shown that, under sufficiently intense OB-star illumination of a stationary photoexcitation front (PDR), nonlinear H2 photoexcitation processes comprising driven resonant two…