Are voids found in the Lyman-alpha forest?

Details Are voids found in the Lyman-alpha forest? Are voids found in the Lyman-alpha forest?

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.228p..41c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 228, Oct. 1, 1987, p. 41P-45P.

Astronomy and Astrophysics

Astronomy

30

Lyman Alpha Radiation, Quasars, Absorption Spectra, Hydrogen Atoms, Radiation Distribution, Red Shift, Voids

Scientific paper

Evidence in the literature exists for voids seen in the Ly-α forest of QSOs studied under high resolution and high signal-to-noise. The indication is that of voids at least as large as approximately 50 h-1Mpc (h ≡ H0/100 km s-1Mpc-1), but with a spatial filling factor of perhaps only 5 per cent near a redshift of 3. This evidence is weak enough that further data must be acquired before a universal phenomenon can be established. The total absence of such voids, however, is excluded at the 99 per cent level.

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