Seminar

With statistical uncertainties shrinking in next-generation surveys (LSST, Simons Observatory, LiteBIRD), instrumental systematics now dominate, making absolute calibration critical. This seminar presents StarDICE (photometry) and POLOCALC (polarimetry), two experiments building an absolute metrological chain from laboratory standards to astronomy.

This seminar reviews how the Higgs and top-quark sectors, tightly linked by the Brout-Englert-Higgs mechanism, offer sensitive probes of physics beyond the Standard Model. Recent searches for coupling deviations using SMEFT/HEFT and ATLAS analyses of multi-top and tt̄HH production are presented.

Ce séminaire présente Rust, un langage système moderne (utilisé pour les noyaux, la robotique, etc.), en pleine expansion. Il en explore les atouts, les défauts et les particularités, le compare au C++ et à Python, et illustre son utilisation innovante par l’équipe CTA-RTA au LAPP.

GWTC-4 adds 128 new compact binary detections (total: 218), with some SNR > 30. The O4a GWB search sets 1.7×–2.1× tighter limits on energy density and polarizations. A+ sensitivity may detect the CBC background.

The Story of Poppy Humanoid:
1- Community Design – Governance, intellectual property, and collaborative tools.
2- Community Management – Role and challenges in open-source science.

The talk explores the hunt for neutrino properties and dark matter—both requiring detection of ultra-rare events buried in background noise. It highlights strategies, background reduction, and advanced detectors like scintillators and cryogenic bolometers, focusing on the upcoming TESSERACT experiment at Modane (first data: 2028).

Accessibility in academic and scientific settings remains a major challenge. This seminar will explore the obstacles faced by people with disabilities and present practical solutions to improve accessibility—both in terms of infrastructure and workplace culture—to foster a more inclusive and welcoming environment.

Neutrinoless Double Beta Decay is a rare, pivotal process to test Majorana neutrinos and lepton number conservation. The seminar highlights bolometric detection methods and CUPID’s cutting-edge tech—a next-gen experiment with strong discovery potential.

The Dark Energy Spectroscopic Instrument (DESI) is mapping 11 billion years of cosmic expansion with unprecedented precision. Early results from its first three years suggest dark energy may evolve over time—not stay constant—challenging current theories about the universe’s acceleration.

The Egyptians dated events by reigns, not in absolute years. The Meryt project, presented in this seminar, combines radiocarbon (C14) dating and Bayesian statistics to precisely date their history, such as the end of Khufu’s reign.