A DETERMINATION OF THE INTERGALACTIC REDSHIFT-DEPENDENT ULTRAVIOLET-OPTICAL-NIR PHOTON DENSITY USING DEEP GALAXY SURVEY DATA AND THE GAMMA-RAY OPACITY OF THE UNIVERSE

被引：37

作者：

Stecker, Floyd W. ^{[1
,2
]}

Malkan, Matthew A. ^{[2
]}

Scully, Sean T. ^{[3
]}

机构：

[1] NASA, Goddard Space Flight Ctr, Astrophys Sci Div, Greenbelt, MD 20771 USA

[2] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[3] James Madison Univ, Dept Phys, Harrisonburg, VA 22807 USA

来源：

ASTROPHYSICAL JOURNAL | 2012年 / 761卷 / 02期

关键词：

diffuse radiation; galaxies: general; galaxies: luminosity function; mass function; ultraviolet: galaxies; EXTRAGALACTIC BACKGROUND LIGHT; LYMAN-BREAK GALAXIES; STAR-FORMATION RATE; INFRARED LUMINOSITY FUNCTIONS; HUBBLE-SPACE-TELESCOPE; FAINT-END SLOPE; FORMING GALAXIES; WFC3/IR OBSERVATIONS; FORMATION HISTORY; DUST ATTENUATION;

D O I：

10.1088/0004-637X/761/2/128

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the intensity and photon spectrum of the intergalactic background light (IBL) as a function of redshift using an approach based on observational data obtained in many different wavelength bands from local to deep galaxy surveys. This allows us to obtain an empirical determination of the IBL and to quantify its observationally based uncertainties. Using our results on the IBL, we then place 68% confidence upper and lower limits on the opacity of the universe to gamma-rays, free of the theoretical assumptions that were needed for past calculations. We compare our results with measurements of the extragalactic background light and upper limits obtained from observations made by the Fermi Gamma-ray Space Telescope.

引用

页数：9

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