A-APPROXIMATELY-10 MPC VOID IN THE LY-ALPHA FOREST AT Z = 3.17

被引：65
|
作者：
DOBRZYCKI, A
BECHTOLD, J
机构：
[1] Steward Observatory, University of Arizona, Tucson
[2] Copernicus Astronomical Center, 00-716 Warsaw
来源：
ASTROPHYSICAL JOURNAL | 1991年 / 377卷 / 02期
关键词：
COSMOLOGY; GALAXIES; INTERGALACTIC MEDIUM; QUASARS;
D O I：
10.1086/186119
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The spectrum of the z = 3.285 quasar, Q0302-003, shows a large (approximately 10 Mpc) void in the Ly-alpha forest at z almost-equal-to 3.17. By simulating the absorption spectrum of the quasar with a range of Ly-alpha forest cloud parameters, we find that the probability of such a void occurring by chance is approximately 2 x 10(-4). Since the void is near (although not centered on) the redshift of a bright foreground quasar, we discuss the possibility that the void results from ionization of the clouds by the EUV radiation of this QSO.
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页码：L69 / L72
页数：4
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