Exploring the multimessenger emission of luminous and ultra-luminous infrared galaxies

Wednesday Sep 23, 2026, 3:00 PM → 4:00 PM Europe/Madrid

C7b/058 - Seminar (IFAE Main Building C7b)

Pablo Correa (LPNHE)

Luminous and ultra-luminous infrared galaxies (LIRGs and ULIRGs) host some of the most extreme star-forming environments in the Universe. Typically associated with galaxy interactions and efficient gas inflows, these systems concentrate large amounts of gas in their central regions, powering intense starbursts and, in many cases, deeply embedded active galactic nuclei (AGN). Both components provide extreme environments for cosmic-ray acceleration and the subsequent production of high-energy neutrinos and gamma rays. In this talk, I will explore U/LIRGs from a multimessenger perspective and argue that neutrinos and gamma rays provide complementary probes of their high-energy activity. Starting with neutrinos, I will discuss IceCube studies targeting U/LIRGs, and the evidence linking neutrino observations to their AGN component. I will then turn to gamma rays, discussing what current observations have revealed about starburst activity in these systems and the limitations of existing measurements. Finally, I will discuss the prospects for observing U/LIRGs at very-high gamma-ray energies with the Cherenkov Telescope Array Observatory (CTAO), and how future observations could open a new window onto the high-energy processes in these extreme star-forming systems.

Link for zoom connection: https://us02web.zoom.us/j/89787514064?pwd=SkRaOElqanZRNFZXM2d2SE9PN1d0Zz09

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