The Emission of Galaxies over the Whole Electromagnetic Spectrum

Denis Burgarella, Mederic Boquien, Yannick Roehlly, Laure Ciesla and Veronique Buat

The emission of galaxies is not limited to the usual optical range but extends to a wider spectral range with, most notably, emission in the X-ray, ultraviolet, infrared and radio ranges. Their detection and study brings a lot of information to the astrophysics because the physical phenomena at the origin of the various emissions are dierent. Each of them allows analysis of a dierent facet of the physics of galaxies: gas, stars, dust, Active Galactic Nuclei (AGN). However, gathering this multi-wavelength information is not an easy task as some of them do not reach ground-based telescopes and we have to design and launch space telescopes to catch and collect the relevant photons. This paper will present the tools that are available to the astrophysicist to decipher the message sent by local, distant or even the most remote galaxies observed in the universe.

Proceedings of the Polish Astronomical Society, vol. 4, 125-131 (2017)

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