The Hidden Millimeter Universe

Talk Abstract

Our everyday perception of light is limited to the visible radiation, which is only a small segment of the vast electromagnetic spectrum, that spans from high-energy waves as X-rays, UV and visible waves to low-energy radio/millimetre waves. The phenomena and physical effects we can observe fundamentally change depending on the frequency band used. In this contribution, a comparison between science achievable in the higher-frequency bands with that of the lower-frequency regime will be made, detailing on how the instrumentation required for observations dramatically changes, contrasting the design of traditional optical telescopes with the engineering of large radio telescopes and arrays. In addition, the unique scientific cases addressed by the latter will be discussed, as studying large-scale structures of the Cosmic Web and extracting crucial cosmological information from the observation of the Cosmic Microwave Background (CMB), in order to establish a cosmological model that will fully describe the Universe.