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Extragalactic Background Light

(electromagnetic radiation from star formation and AGNs)

The term Extragalactic Background Light (EBL) typically refers to Cosmic Background Radiation over a range of Wavelengths including Visible Light (the Cosmic Optical Background) and more on each end: typically 0.1 and 1000um, spanning a range from the Cosmic Microwave Background into Ultraviolet.

EBL is difficult to measure because of galactic sources of Flux.

0.1um3.0PHz12eVbeginExtragalactic Background Light
1000um300GHz1.3meVendExtragalactic Background Light

Referenced by:
Cosmic Background Radiation (CBR)