BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:The Science of the Einstein Telescope DTSTART:20261013T093000Z DTEND:20261013T103000Z DTSTAMP:20260928T212200Z UID:indico-event-12@indico.icranet.org CONTACT:secretariat@icranet.org DESCRIPTION:Speakers: Paolo Pani (Sapienza University of Rome)\n\nThe Eins tein Telescope (ET) is the planned European third-generation gravitational -wave observatory\, designed to improve the sensitivity of current detecto rs by about an order of magnitude and\, crucially\, to extend observations down to frequencies of a few Hz. This will make ET both a precision instr ument for nearby sources and a discovery machine capable of probing compac t binaries throughout cosmic history. We review the broad ET science case\ , spanning compact-object astrophysics\, multimessenger astronomy\, nuclea r physics\, cosmology\, and fundamental physics. We highlight how high sig nal-to-noise detections and low-frequency sensitivity will enable precisio n studies of black holes and neutron stars\, stringent tests of General Re lativity\, measurements of the neutron-star equation of state\, and search es for dark matter and cosmological gravitational-wave backgrounds. We als o discuss ongoing studies of how site-dependent low-frequency noise may im pact key ET science targets and the performance of different detector conf igurations. Finally\, we briefly outline some of the challenges posed by E T data\, including long and overlapping signals and the need for new analy sis strategies.\nPaolo Pani is Professor of Theoretical Physics at Sapienz a University of Rome\, where he coordinates the gravity theory group\, and a Senior Fellow of the Sapienza School for Advanced Studies. He is a reci pient of the INFN Fubini Prize and the SIGRAV Prize for his studies on bla ck hole physics\, gravitational-wave phenomenology\, and their connections to fundamental physics. He is the author of a textbook on General Relativ ity and of numerous influential review articles\, and has co-authored over 200 publications. He is the Principal Investigator of the FIS project ET- NOW and\, since 2026\, serves as a Chair of the Einstein Telescope Observa tional Science Board.\n\nhttps://indico.icranet.org/event/12/ LOCATION:ICRANet Pescara URL:https://indico.icranet.org/event/12/ END:VEVENT END:VCALENDAR