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The extragalactic background light and the gamma-ray opacity of the universe
Dwek, Eli; Krennrich, Frank
The extragalactic background light (EBL) is one of the fundamental observational quantities in cosmology. All energy releases from resolved and unresolved extragalactic sources, and the light from any truly diffuse background, excluding the cosmic microwave background (CMB), contribute to its intensity and spectral energy distribution. It therefor…
Multiwavelength Astronomy and CTA: X-rays
Takahashi, Tadayuki; Uchiyama, Yasunobu; Stawarz, Łukasz
We discuss how future X-ray instruments which are under development can contribute to our understanding of the non-thermal Universe. Much progress has been made in the field of X-ray Astronomy recently, thanks to the operation of modern X-ray telescopes such as Chandra, XMM-Newton, Suzaku, and SWIFT, but more in-depth investigation awaits future m…