Tootfinder

Bewegliche Mikrospiegel: Deutsches Start-up denkt AR-Displays neu
Das Karlsruher Start-up Gixel entwickelt ein AR-Display, das gängige Lösungen in zentralen Aspekten übertreffen soll.
https://www.

Man stelle sich vor, man würde 30% der Fahrbahnen für Autos dichtmachen. Aber für Autoverkehr gibt es keine Obergrenzen, nur Mindestleistungen und vor allem Geld wie in ein Fass ohne Boden.
https://www.swr.de/swraktuell/baden-wuertt

Weniger Bahnen, längere Wartezeiten ohne Alternative: Karlsruhe muss wegen Finanzkrise Nahverkehr kürzen
Karlsruhe muss bei den Finanzen hart durchgreifen. Die Verkehrsbetriebe beraten am 23. Juli ein im vergangenen Jahr bekannt gewordenes Sparkonzept. Der Gemeinderat entscheidet im Herbst.

Mein Vortrag zur Digitalen Gewalt gestern im #ZKM in Karlsruhe bei der #GPN23 ist online.
Wen betrifft sie? Wer muss sich vor Ferienwohnungen fürchten? Was hat die neue Bundesregierung dazu vor, und warum nicht? Was hat das mit Kommunalpolitik zu tun? Und was kostet das überhaupt?
Aber auch: W…

Spectral analysis of HD 49798, a bright, hydrogen-deficient sdO-type donor star in an accreting X-ray binary
Thomas Rauch (Institute for Astronomy and Astrophysics, Eberhard Karls University, Tuebingen, Germany), Paul Strau{\ss} (Institute for Astronomy and Astrophysics, Eberhard Karls University, Tuebingen, Germany)
https://arx…

Spectral analysis of HD 49798, a bright, hydrogen-deficient sdO-type donor star in an accreting X-ray binary
Context: HD 49798 is a bright ($m_{\rm V} = 8.287$), hot (effective temperature $T_{\rm eff} = 45000$ K) subdwarf star of the spectral type O (sdO). It is the only confirmed sdO-type mass-donor star of an X-ray binary that has a high-mass (1.28 $M_\odot$) white-dwarf or neutron-star primary with a spin period of only 13.2 s. Aims: Since a high-quality spectrum of HD 49798, obtained with the Tübingen Ultraviolet Echelle Spectrometer (TUES), that has never been analyzed before is available in th…

Using krypton-83m to determine the neutrino-mass bias caused by a non-constant electric potential of the KATRIN source
Moritz Machatschek
https://arxiv.org/abs/2506.13829

Using krypton-83m to determine the neutrino-mass bias caused by a non-constant electric potential of the KATRIN source
Precision spectroscopy of the electron spectrum of the tritium $β$ decay near the kinematic endpoint is a direct method to determine the effective electron antineutrino mass. The KArlsruhe TRItium Neutrino (KATRIN) experiment aims to determine this quantity with a sensitivity of better than $0.3\,\mathrm{eV}$ ($90\,\%$~C.L.). An inhomogeneous electric potential in the tritium source of KATRIN leads to a distortion of the $β$ spectrum, which directly impacts the neutrino-mass observable. This …

Mal ein #Karlsruher Thema. Ich kann das Terminbuchungsformular beim Bürgerbüro nicht abschicken. Er sagt mir aber auch nicht wieso nicht. Hab die Telefonnummer nun sicher 10x umformatiert und es mit 3 unterschiedlichen Browsern versucht. Kein Erfolg. Muss ich erst eine schwarze Katze opfern?

@… By the way, I lived 6 years in Stockholm, where I worked at Riksradion, and 15 years in Göteborg, which I consider to be my proper Swedish hometown. I also spent a miserable year in Örebro, a likewise miserable year in Karlskrona, and a fairly pleasant year in Malmö-Helsingborg (commuting btw the two for work).
I don't miss the place, do you?

A penalized least squares estimator for extreme-value mixture models
Anas Mourahib, Anna Kiriliouk, Johan Segers
https://arxiv.org/abs/2506.15272 https://

A penalized least squares estimator for extreme-value mixture models
Estimating the parameters of max-stable parametric models poses significant challenges, particularly when some parameters lie on the boundary of the parameter space. This situation arises when a subset of variables exhibits extreme values simultaneously, while the remaining variables do not -- a phenomenon referred to as an extreme direction in the literature. In this paper, we propose a novel estimator for the parameters of a general parametric mixture model, incorporating a penalization appro…

Yesterday, I've attended the MSE Research Data Forum 2025 organised by #NFDIMatWerk. Aside from the conference presentations, our little ontologies group was meeting and discussing future work on ontologies in NFDI-MatWerk, including NFDIcore, MatWerk Application Ontologies, and PMDcore.

Modeling Gravitational Wave Bias from 3D Power Spectra of Spectroscopic Surveys
Dorsa Sadat Hosseini, Amir Dehghani, J. Leo Kim, Alex Krolewski, Suvodip Mukherjee, Ghazal Geshnizjani
https://arxiv.org/abs/2506.11201

Modeling Gravitational Wave Bias from 3D Power Spectra of Spectroscopic Surveys
We present a framework for relating gravitational wave (GW) sources to the astrophysical properties of spectroscopic galaxy samples. We show how this can enable using clustering measurements of gravitational wave (GW) sources to infer the relationship between the GW sources and the astrophysical properties of their host galaxies. We accomplish this by creating mock GW catalogs from the spectroscopic Sloan Digital Sky Survey (SDSS) DR7 galaxy survey. We populate the GWs using a joint host-galaxy…