Fakultät für Physik und Astronomie

FACULTY EVENTS

Freitag, 17. Juli 2026 11:00 Uhr Eröffnung der Ausstellung 'FORSCHEN - MESSEN - ENTDECKEN'

Christian Enss, Universität Heidelberg Historische Instrumente aus der Fakultät für Physik und Astronomie Die Sammlung historischer Instrumente der Fakultät für Physik und Astronomie der Universität Heidelberg ist eine wissenschaftliche Lehr- und Forschungssammlung deren Ursprünge bis in die Mitte des 18. Jahrhunderts zurückreichen. Die Sammlung umfasst rund 1.900 Objekte – von Thermometern und Barometern über Entfernungsmesser und Spektrometer bis hin zu verschiedensten Strom- und Spannungsmessgeräten. Einige der Instrumente sind mit bedeutenden Wissenschaftlern wie Philipp von Jolly, Gustav Kirchhoff oder Hermann v. Helmholtz verbunden. Ein Teil der Sammlung wird in der Magistrale im Erdgeschoss präsentiert. Darüber hinaus sind rund 200 ausgewählte Exponate auf Anfrage öffentlich zugänglich und veranschaulichen sowohl den allgemeinen Fortschritt der Physik als auch die Heidelberger Physikgeschichte.

Teilchenkolloquium

Neutrino Astronomy

Prof. Dr. Christian Glaser, TU Dortmund How Deep Learning and Differential Programming Accelerate Progress in Neutrino Astronomy Prof. Dr. Christian Glaser TU Dortmund Cosmic neutrinos provide a unique probe of the universe's most extreme environments, but their detection is extraordinarily challenging. However, the extremely small flux and cross-section of cosmic neutrinos make their detection extraordinarily challenging and demand the instrumentation of enormous target volumes. In this colloquium, I will discuss how sparse arrays of radio detector stations, deployed in the polar ice sheets, can achieve unprecedented sensitivity to ultra-high-energy (UHE, E > 10¹⁷ eV) cosmic neutrinos. I will explain the detection principle and will introduce the Radio Neutrino Observatory Greenland (RNO-G) - currently under construction - and outline the plans for the next-generation IceCube-Gen2 observatory at the South Pole. I will also present my NuRadioOpt project, which leverages recent advances in deep learning and differentiable programming to enhance the performance of future radio detectors. In particular, real-time AI-based triggering may double the neutrino detection rate, while end-to-end detector optimization through differentiable programming promises substantial improvements in reconstruction accuracy and overall sensitivity.

Astronomisches Kolloquium

Dienstag, 14. Juli 2026 16:30 Uhr The Interstellar Visitors

Colin Snodgrass , University of Edinburgh The first macroscopic interstellar object (ISO) passing through our Solar System, `Oumuamua, was discovered in 2017 and caused a lot of excitement, due to both its novelty and its unexpected properties. The subsequent two discoveries, 2I/Borisov and 3I/ATLAS, appear more like comets. 3I/ATLAS has been observable for most of the last year, and as the first ISO seen in the JWST era has been well studied, and appears to be an ancient object that is significantly older than our Solar System. I will discuss what we have learned about the ISOs seen so far, what the prospects are for this field in the era of Rubin/LSST, and how we could potentially send a spacecraft to see a future visitor up close. To arrange a visit with the speaker during the visit, please contact their host: Markus Hundertmark

Zentrum für Quantendynamik Kolloquium

Montag, 13. Juli 2026 10:00 Uhr Building a strontium gas microscope for site-resolved Bose-Hubbard physics

Sanghyeop Lee, Institut d'Optique Graduate School - Univ. Paris-Saclay Building a strontium gas microscope for site-resolved Bose-Hubbard physics Sanghyeop Lee Institut d'Optique Graduate School, Univ. Paris-Saclay I will present my PhD work on building a strontium-84 quantum gas microscope toward site-resolved studies of 2D Bose-Hubbard criticality. A central requirement is to combine large and sufficiently homogeneous optical lattices with fluorescence imaging that preserves the atomic distribution at the single site level. I will first describe the experimental steps of preparing a 2D strontium quantum gas in optical lattices and obtaining resolved fluorescence images. I will then discuss the characterization of the optical response, including point-spread function extraction, field dependence, and photon budget measurements. Finally, I will present a theoretical model of narrow-line in-trap fluorescence imaging, which provides a framework for optimizing the imaging parameters.

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