Rayleigh scattering cross-section redward of Lyα by atomic hydrogen

@article{Lee2004RayleighSC,
  title={Rayleigh scattering cross-section redward of Ly$\alpha$ by atomic hydrogen},
  author={Hee-Won Lee and Hee Il Kim},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2004},
  volume={347},
  pages={802-806}
}
We present a low-energy expansion of the Kramers-Heisenberg formula for atomic hydrogen in terms of ω/ω 1 , where ω 1 and ω are the angular frequencies corresponding to the Lyman limit and the incident radiation, respectively. The leading term is proportional to (ω/ω 1 ) 4 , which admits a well-known classical interpretation. With higher-order terms, we achieve accuracy with errors less than 4 per cent of the scattering cross-sections in the region ω/ω 1 ≤ 0.6. In the neighbouring region around… Expand

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References

SHOWING 1-10 OF 15 REFERENCES
Evidence for reionization at z ∼ 6: Detection of a gunn-peterson trough in a z = 6.28 quasar
We present moderate-resolution Keck spectroscopy of quasars at z = 5.82, 5.99, and 6.28, discovered by the Sloan Digital Sky Survey (SDSS). We find that the Ly? absorption in the spectra of theseExpand
Reionization of the Intergalactic Medium and the Damping Wing of the Gunn-Peterson Trough
Observations of high-redshift quasars show that the intergalactic medium (IGM) must have been reionized at some redshift z > 5. If a source of radiation could be observed at the rest-frame LyαExpand
Quantum Mechanics of One- and Two-Electron Atoms
One of the simplest, and most completely treated, fields of application of quantum mechanics is the theory of atoms with one or two electrons. For hydrogen and the analcgous ions He+, Li++, etc., theExpand
Quantum mechanics
Quantum mechanics (QM) is the modern physical theory of very small (microscopic) systems, typically atomic-sized or smaller. Along with Einstein's theory of relativity, QM represented a majorExpand
Numerical Study of Compressible Magnetohydrodynamic Turbulence in Two Dimensions
We have studied forced turbulence of compressible magnetohydrodynamic (MHD) flows through two-dimensional simulations with different numerical resolutions. First, hydrodynamic turbulence with MachExpand
A Survey of z > 5.7 Quasars in the Sloan Digital Sky Survey. II. Discovery of Three Additional Quasars at z > 6
We present the discovery of three new quasars at z > 6 in ~ 1300 deg2 of Sloan Digital Sky Survey imaging data, J114816.64+525150.3 (z = 6.43), J104845.05+463718.3 (z = 6.23), and J163033.90+401209.6Expand
On the Density of Neutral Hydrogen in Intergalactic Space
Density of neutral hydrogen in intergalactic space, using spectroscopic examination of quasi- stellar source 3C 9
ELASTIC SCATTERING OF PHOTONS BY A HYDROGEN ATOM.
Relativistic Quantum Theory, Pergamon Press Bethe
  • 2001
...
1
2
...