A approximately 10 MPC void in the Ly-alpha forest at Z = 3.17

Details A approximately 10 MPC void in the Ly-alpha forest at Z = 3.17 A approximately 10 MPC void in the Ly-alpha forest at Z = 3.17

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...377l..69d&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 377, Aug. 20, 1991, p. L69-L72.

Mathematics

Probability

64

Absorption Spectra, Intergalactic Media, Lyman Alpha Radiation, Quasars, Voids, Molecular Clouds, Red Shift, Spectrum Analysis

Scientific paper

The spectrum of the z = 3.285 quasar, Q0302 - 003, shows a large (approximately 10 Mpc) void in the Ly-alpha forest at z roughly 3.17. By simulating the absorption spectrum of the quasar with a range of Ly-alpha forest cloud parameters, it is found that the probability of such a void occurring by chance is about 0.0002. Since the void is near (although not centered on) the redshift of a bright foreground quasar, the possibility that the void results from ionization of the clouds by the EUV radiation of this QSO is discussed.

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