Exploring the Universe with Line-Intensity Mapping

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• José Luis Bernal (Instituto de Física de Cantabria)
• Monday 19 January 2026, 13:00-14:00
• CMS, Pav. B, CTC Common Room (B1.19) [Potter Room].

If you have a question about this talk, please contact Gonzalo Villa.

Line-Intensity mapping (LIM) uses the integrated flux along the line of sight as tracer of the LSS . Using relatively low-aperture telescopes, it recovers radial information targeting known spectral lines discarding the continuum emission, which makes the experiments cheaper compared with galaxy surveys. Mapping the intensity fluctuations of an array of lines from HI 21cm to optical-UV lines offers a unique opportunity to probe redshifts well beyond the reach of other cosmological observations, access regimes that cannot be explored other- wise, and exploit the enormous potential of cross-correlations with other measurements. This promises to deepen our understanding of various questions related to galaxy formation and evolution, cosmology, and fundamental physics. In this talk I will cover the current status of LIM , main measurements and the promised potential for the future, with focus on the next steps that must be taken to bring this technique to full speed for precision cosmology.

This talk is part of the Cosmology Lunch series.

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