Concepedia

Detection of intergalactic ionized helium absorption in a high-redshift quasar

P. Jakobsen, A. Boksenberg, J. M. Deharveng, P. Greenfield, R. Jędrzejewski, Francesco Paresce

Nature · 1994 · 202 citations · 30 references

DOI

Concepts

References

30

On the Density of Neutral Hydrogen in Intergalactic Space.

James E. Gunn, B. A. Peterson · The Astrophysical Journal · 1965 · 1.3K citations

, , +14

Primordial nucleosynthesis redux

Terry P. Walker, Gary Steigman, Ho-Shik Kang et al. · The Astrophysical Journal · 1991 · 804 citations

, , +12

The distribution of Lyman-alpha absorption lines in the spectra of six QSOs - Evidence for an intergalactic origin

W. L. W. Sargent, Patrick Young, A. Boksenberg et al. · The Astrophysical Journal Supplement Series · 1980 · 335 citations

, , +12

Quasar ionization of Lyman-alpha clouds - The proximity effect, a probe of the ultraviolet background at high redshift

S. Bajtlik, Robert C. Duncan, Jeremiah P. Ostriker · The Astrophysical Journal · 1988 · 316 citations

, , +14

Cosmological H II regions and the photoionization of the intergalactic medium

Paul R. Shapiro, Mark L. Giroux · The Astrophysical Journal · 1987 · 269 citations

, , +10