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.

引用

页码：L69 / L72

页数：4

共 32 条

[1] SPECTROPOLARIMETRY AND THE NATURE OF NGC-1068 [J].