Sebastian Schmidt
A5045720797- Atmospheric aerosols and clouds
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Epistemology, Ethics, and Metaphysics
- Particle physics theoretical and experimental studies
- Atmospheric Ozone and Climate
- Natural Language Processing Techniques
- Astrophysics and Cosmic Phenomena
- Free Will and Agency
- Nuclear physics research studies
- Nuclear reactor physics and engineering
- Atomic and Subatomic Physics Research
- Topic Modeling
- Climate variability and models
- Philosophical Ethics and Theory
- Radiation Therapy and Dosimetry
- X-ray Spectroscopy and Fluorescence Analysis
- Web Data Mining and Analysis
- Radiative Heat Transfer Studies
- Infrared Target Detection Methodologies
- Ionosphere and magnetosphere dynamics
University of Zurich
2006-2024
Philipps University of Marburg
2024
Goethe University Frankfurt
2013-2024
University of Bonn
1994-2024
University of Johannesburg
2022-2023
Zurich University of Teacher Education
2021-2023
Friedrich-Alexander-Universität Erlangen-Nürnberg
2005-2022
Universidad de Zaragoza
2022
University of Colorado Boulder
2022
Laboratory for Atmospheric and Space Physics
2022
Hypothetical low-mass particles, such as axions, provide a compelling explanation for the dark matter in universe. Such particles are expected to emerge abundantly from hot interior of stars. To test this prediction, CERN Axion Solar Telescope (CAST) uses 9 T refurbished Large Hadron Collider magnet directed towards Sun. In strong magnetic field, solar axions can be converted X-ray photons which recorded by detectors. 2013–2015 run, thanks low-background detectors and new telescope,...
We review the physics potential of a next generation search for solar axions: International Axion Observatory (IAXO) . Endowed with sensitivity to discover axion-like particles (ALPs) coupling photons as small gaγ∼ 10−12 GeV−1, or electrons gae∼10−13, IAXO has find QCD axion in 1 meV∼1 eV mass range where it solves strong CP problem, can account cold dark matter Universe and be responsible anomalous cooling observed number stellar systems. At same time, will have enough detect lower axions...
A bstract We present results of the Relic Axion Dark-Matter Exploratory Setup (RADES), a detector which is part CERN Solar Telescope (CAST), searching for axion dark matter in 34.67 μ eV mass range. radio frequency cavity consisting 5 sub-cavities coupled by inductive irises took physics data inside CAST dipole magnet first time using this filter-like haloscope geometry. An exclusion limit with 95% credibility level on axion-photon coupling constant g aγ ≳ 4 × 10 − 13 GeV 1 over range 34 ....
The CAST-CAPP axion haloscope, operating at CERN inside the CAST dipole magnet, has searched for axions in 19.74 $\mu$eV to 22.47 mass range. detection concept follows Sikivie haloscope principle, where Dark Matter convert into photons within a resonator immersed magnetic field. is an array of four individual rectangular cavities inserted strong phase-matched maximize sensitivity. Here we report on data acquired 4124 h from 2019 2021. Each cavity equipped with fast frequency tuning mechanism...
Structural and genetic studies on prokaryotic ribosomes have provided important insights into fundamental aspects of protein synthesis translational control its interaction with ribosomal drugs. Comparable mechanistic in eukaryotes are mainly hampered by the absence both high-resolution crystal structures efficient models. To study aminoglycoside antibiotics selected eukaryotic ribosomes, we replaced bacterial drug binding site 16S rRNA counterpart, resulting hybrid a fully functional...
The normative force of evidence can seem puzzling. It seems that having conclusive for a proposition does not, by itself, make it true one ought to believe the proposition. But spelling out condition must meet in order provide us with genuine reasons belief lead into dilemma: either fails explain
Abstract It has been argued that rationality consists in responding correctly to reasons. Recent defenses of the normativity assume this implies we always ought be rational. However, follows only if reasons requires us respond are normative meta-epistemological contributions have questioned whether epistemic normative. If they were right, then wouldn’t provide with independently wrong-kind epistemically This paper spells out neglected challenge for by connecting two bodies literature....
Despite its key role in the development, maintenance, and treatment of anxiety disorders, detailed mechanisms human avoidance learning remain elusive. To contribute to understanding learning, we here report on a novel approach-avoidance conflict task that requires participants learn associations between complex visual stimuli combined appetitive aversive while actively engaging with experimental environment. Using an agent-based behavioral modeling approach, implemented validated extensive...
The neutron sensitivity of the C$_6$D$_6$ detector setup used at n_TOF for capture measurements has been studied by means detailed GEANT4 simulations. A realistic software replica entire experimental hall, including beam line, sample, supports and walls area implemented in simulations have analyzed same manner as data, particular applying Pulse Height Weighting Technique. validated against a measurement background performed with $^\mathrm{nat}$C showing an excellent agreement above 1 keV. At...
Broome takes the debate on rationality to be concerned with ordinary use of 'rational'. I argue that this is at best misleading. For object current theories determined by a specific 'rational' intimately connected blame and praise. call property refers 'rationalityRESP'. This focus rationalityRESP, argue, has two significant implications for Broome's critique as reasons-responsiveness. First, rationalityRESP plausibly conceived kind Secondly, dispute internalists about normativity well his...
Hypothetical axions provide a compelling explanation for dark matter and could be emitted from the hot solar interior. The CERN Axion Solar Telescope has been searching via their back conversion to x-ray photons in 9-T 10-m long magnet directed toward Sun. We report on an extended run with International Observatory pathfinder detector, doubling previous exposure time. detector was operated xenon-based gas mixture part of new run, providing technical insights future configurations. No counts...
Future self-driving cars must be able to perceive and understand their surroundings. Deep learning based approaches promise solve the perception problem but require a large amount of manually labeled training data. Active is procedure in which model itself selects interesting samples for labeling on uncertainty, with substantially less data required training. Recent research active has mostly focused simple image classification task. In this paper, we propose novel methods estimate sample...
We report on a first measurement with sensitive opto-mechanical force sensor designed for the direct detection of coupling real chameleons to matter. These dark energy candidates could be produced in Sun and stream unimpeded Earth. The KWISP detector installed CAST axion search experiment at CERN looks tiny displacements thin membrane caused by mechanical effect solar chameleons. are detected Michelson interferometer homodyne readout scheme. benefits from focusing action ABRIXAS X-ray...
Aminoglycoside antibiotics target the ribosomal decoding A-site and are active against a broad spectrum of bacteria. These compounds bind to highly conserved stem-loop-stem structure in helix 44 bacterial 16S rRNA. One particular aminoglycoside, paromomycin, also shows potent antiprotozoal activity is used for treatment parasitic infections, e.g. by Leishmania spp. The precise drug is, however, unclear; whether aminoglycoside cytosolic and/or mitochondrial protozoan ribosome. To establish an...
Crowdsourcing platforms support the assignment of jobs while relying on workers' search capabilities. Recommenders can decisions to improve quality and outcome for both worker requester. A precedent study showed, that many workers expect get tasks recommended, which are similar previously finished ones. In order create genuine task recommendation, similarities between have be identified analyzed. Therefore, this work provides an empirical about how perceive similarities. The perceived may...