期刊
SCIENCE
卷 362, 期 6418, 页码 1031-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aat8123
关键词
-
资金
- NSF [AST-1715256, NNX16AR72G, 80NSSC17K0506]
- NASA [AST-1715256, NNX16AR72G, 80NSSC17K0506]
- Icelandic Research Fund [173728051]
- Chief of Naval Research
- Juan de la Cierva program from the Spanish MEC
- Wallenberg Academy
- Italian Ministry of Education, University and Research (MIUR) [FIRB-2012-RBFR12PM1F]
- DOE [DE-AC02-76SF00515]
- NASA [NNX16AR72G, 894874] Funding Source: Federal RePORTER
The light emitted by all galaxies over the history of the Universe produces the extragalactic background light (EBL) at ultraviolet, optical, and infrared wavelengths. The EBL is a source of opacity for gamma rays via photon-photon interactions, leaving an imprint in the spectra of distant gamma-ray sources. We measured this attenuation using 739 active galaxies and one gamma-ray burst detected by the Fermi Large Area Telescope. This allowed us to reconstruct the evolution of the EBL and determine the star formation history of the Universe over 90% of cosmic time. Our star formation history is consistent with independent measurements from galaxy surveys, peaking at redshift z similar to 2. Upper limits of the EBL at the epoch of reionization suggest a turnover in the abundance of faint galaxies at z similar to 6.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据