BEGIN:VCALENDAR VERSION:2.0 PRODID:-//linuxsoftware.nz//NONSGML Joyous v1.4//EN BEGIN:VEVENT SUMMARY:Exploring the uncharted Universe with Gravitational Waves DTSTART:20250327T143000Z DTEND:20250327T160000Z DTSTAMP:20260801T185119Z UID:39a486e8-3df7-4257-9f3e-cbe5827a8a70 SEQUENCE:1 CREATED:20250326T094114Z DESCRIPTION: Every time that we have looked further into the Universe\, we have found fascinating surprises. Most notably\, we observe that an omnip resent dark energy drives the Universe to expand ever faster\, and that it s large-scale structures hold together only because of an invisible dark m atter. We do not fully understand how cosmic structures form\, and even if our laws of gravity are valid at all scales. Gravitational waves (GWs) – ripples in space and time produced by extreme gravitational systems in the cosmos such as binary black holes – offer a unique opportunity to a nswer these fundamental open questions. In this talk we will venture into uncharted regions of the Universe and explore how present and future GW ob servations can test the standard cosmological model. In particular\, I wil l discuss how the population of compact binaries can be used to constrain the expansion rate of the Universe at high-redshift\, and how lensed GWs c an probe dark matter substructures and shed light on the origin of the obs erved binary back holes. LAST-MODIFIED:20250326T094114Z LOCATION:DF Seminar Room (2-8.3)\, 2nd floor of Physics Building URL:http://df.vps.tecnico.ulisboa.pt/en/events/exploring-the-uncharted-uni verse-with-gravitational-waves/ X-ALT-DESC;FMTTYPE=text/html:

Every time that we have looked further into the Universe\, we have found fascinating surpris es. Most notably\, we observe that an omnipresent dark energy drives the U niverse to expand ever faster\, and that its large-scale structures hold t ogether only because of an invisible dark matter.

We do not full y understand how cosmic structures form\, and even if our laws of gravity are valid at all scales. Gravitational waves (GWs) – ripples in space an d time produced by extreme gravitational systems in the cosmos such as bin ary black holes – offer a unique opportunity to answer these fundamental open questions. In this talk we will venture into uncharted regions of th e Universe and explore how present and future GW observations can test the standard cosmological model.

In particular\, I will discuss how the population of compact binaries can be used to constrain the expansion rate of the Universe at high-redshift\, and how lensed GWs can probe dark matter substructures and shed light on the origin of the observed binary back holes.

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