A5009047506- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Astrophysics and Star Formation Studies
- Particle Detector Development and Performance
- Stellar, planetary, and galactic studies
- Galaxies: Formation, Evolution, Phenomena
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Astrophysics and Cosmic Phenomena
- Astrophysical Phenomena and Observations
- Neutrino Physics Research
- Computational Physics and Python Applications
- Radiation Detection and Scintillator Technologies
- Advanced Semiconductor Detectors and Materials
- Astronomy and Astrophysical Research
- Gamma-ray bursts and supernovae
- Semiconductor materials and devices
- CCD and CMOS Imaging Sensors
- Advanced X-ray and CT Imaging
- Molecular Spectroscopy and Structure
- Medical Imaging Techniques and Applications
- Black Holes and Theoretical Physics
- Electronic and Structural Properties of Oxides
- Adaptive optics and wavefront sensing
Helsinki Institute of Physics
2016-2025
University of Tübingen
2025
Universitätsklinikum Tübingen
2025
University of California, Santa Cruz
2022-2024
Institute of High Energy Physics
2011-2024
National Radio Astronomy Observatory
2014-2024
A. Alikhanyan National Laboratory
2022-2024
University of Helsinki
2015-2023
Aalto University
2019-2023
Tieto (Finland)
2019-2023
We present the properties of an extensive sample molecular clouds in Large Magellanic Cloud (LMC) mapped at 11 pc resolution CO(1-0) line. identify as regions connected CO emission, and find that distributions cloud sizes, fluxes masses are sensitive to choice decomposition parameters. In all cases, however, luminosity function is steeper than dN/dL \propto L^{-2}, suggesting a substantial fraction mass low-mass clouds. A correlation between size linewidth, while apparent for largest...
We present a wide area (≈8 × 8 kpc), sensitive map of CO (2–1) emission around the nearby starburst galaxy M82. Molecular gas extends far beyond stellar disk, including associated with well-known outflow as 3 kpc from M82's midplane. Kinematic signatures are visible in both and H i emission: tracers show minor axis velocity gradient together they double peaked profiles, consistent hot bounded by cone made mix atomic molecular gas. Combining our data observations dust continuum, we study...
We present spatially resolved (∼50 pc) imaging of molecular gas species in the central kiloparsec nearby starburst galaxy NGC 253, based on observations taken with Atacama Large Millimeter/submillimeter Array. A total 50 lines are detected over a 13 GHz bandwidth imaged 3 mm band. Unambiguous identifications assigned for 27 lines. Based measured high CO/C17O isotopic line ratio (≳350), we show that 12CO(1–0) has moderate optical depths. comparison HCN and HCO+ their 13C-substituted...
We present the "Very Large Array survey of Advanced Camera for Surveys Nearby Galaxy Survey Treasury galaxies (VLA-ANGST)." VLA-ANGST is a National Radio Astronomy Observatory Program consisting high spectral (0.6-2.6 km/s) and spatial (~6") resolution observations neutral, atomic hydrogen (HI) emission toward 35 nearby dwarf from ANGST survey. systematic HST to establish legacy uniform multi-color photometry resolved stars volume-limited sample (D\lesssim4 Mpc). provides VLA HI sub-sample...
We use ALMA to derive the mass, length, and time scales associated with nuclear starburst in NGC 253. This region forms ~2 M_sun/yr of stars resembles other starbursts scaling relations, star formation consuming gas reservoir 10 times faster than galaxy disks. present observations CO, high effective density transitions HCN(1-0), HCO+(1-0), CS(2-1), their isotopologues. identify ten clouds that appear as peaks line emission enhancements HCN-to-CO ratio. These are massive (~10^7 M_sun)...
Abstract NGC 253 hosts the nearest nuclear starburst. Previous observations show a region rich in molecular gas, with dense clouds associated recent star formation. We used Atacama Large Submillimeter/Millimeter Array (ALMA) to image 350 GHz dust continuum and line emission from this at 2 pc resolution. Our reveal ∼14 bright, compact (∼2–3 FWHM) knots of emission. Most these sources are likely be forming super clusters (SSCs) based on their inferred dynamical gas masses, association 36 radio...
We present first results from the "Survey of HI in Extremely Low-mass Dwarfs" (SHIELD), a multi-configuration EVLA study neutral gas contents and dynamics galaxies with masses 10^6-10^7 Solar mass range detected by Arecibo Legacy Fast ALFA (ALFALFA) survey. describe survey motivation concept demonstration using VLA imaging 6 low-mass early ALFALFA data products. then primary scientific goals SHIELD preliminary WIYN 3.5m 12 galaxies. With only few exceptions, distributions these extremely are...
Abstract The Survey of Water and Ammonia in the Galactic Center (SWAG) covers Central Molecular Zone (CMZ) Milky Way at frequencies between 21.2 25.4 GHz obtained Australia Telescope Compact Array ∼0.9 pc spatial ∼2.0 km s −1 spectral resolution. In this paper, we present data on inner ∼250 (1.°4) Sgr C B2. We focus hyperfine structure metastable ammonia inversion lines ( J , K ) = (1, 1)–(6, 6) to derive column density, kinematics, opacity, kinetic gas temperature. CMZ molecular clouds,...
We present an analysis of the relationship between molecular gas and current star formation rate surface density at sub-kpc kpc scales in a sample 14 nearby star-forming galaxies. Measuring bright, high ($\Shtwo\gtrsim$20 \msunpc) regions disks to minimize contribution from diffuse extended emission, we find approximately linear relation density, $\nmol\sim0.96\pm0.16$, with depletion time $\tdep\sim2.30\pm1.32$ Gyr. show that, our galaxies there are no clear correlations \tdep\ free-fall...
In this paper the trends of dragonfly expansions during last decades in Germany and Europe are summarized. It is shown, that there a general expansion many species to north: Mediterranean expanded Central Northern Europe, whereas some African Southern even new continent. means an increase biodiversity, but looking at ecological effects, medium term decrease can be expected for mooreland alpine species. Dragonflies regarded as good indicator group climatic change. Already now areas or regions...
A new (18)F-labeled tetrazine derivative was developed aiming at optimal radiochemistry, fast reaction kinetics in inverse electron-demand Diels-Alder cycloaddition (IEDDA), and favorable pharmacokinetics for vivo bioorthogonal chemistry. The radiolabeling of the achieved high yield, purity, specific activity under mild conditions via conjugation with 5-[(18)F]fluoro-5-deoxyribose, providing a glycosylated low lipophilicity. (18)F-tetrazine showed toward most commonly used dienophiles IEDDA...
Neutral hydrogen (HI) velocity dispersions are believed to be set by turbulence in the interstellar medium (ISM). Although is widely driven star formation (SF), recent studies have shown that this driving mechanism may not dominant regions of low SF rate surface density (SFRSD), such as found dwarf galaxies or outer spirals. We generated average HI line profiles a number nearby dwarfs and low-mass spirals co-adding spectra with either common radius SFRSD. find spatially-resolved...
Abstract We present a detailed study of molecular outflow feature in the nearby starburst galaxy NGC 253 using ALMA. find that this is clearly associated with edge 253's prominent ionized outflow, has projected length ∼300 pc, width ∼50 and velocity dispersion ∼40 km s −1 , which consistent an ejection from disk about 1 Myr ago. The kinematics gas can be interpreted (albeit not uniquely) as accelerating at rate pc . In scenario, approaching escape last measured point. Strikingly, bright...
Abstract We present 0.″15 (∼2.5 pc) resolution ALMA CO(3–2) observations of the starbursting center in NGC 253. Together with archival CO(1–0) and CO(2–1) data, we decompose emission into disk nondisk components. find ∼7%–16% CO luminosity to be associated component (1.2–4.2 × 10 7 K km s −1 pc 2 ). The total molecular gas mass 253 is ∼3.6 8 M ⊙ ∼0.5 (∼15%) component. These measurements are consistent across independent estimates through three transitions. high-resolution allow us identify...
A next-generation medium-energy gamma-ray telescope targeting the MeV range would address open questions in astrophysics regarding how extreme conditions accelerate cosmic-ray particles, produce relativistic jet outflows, and more. One concept, AMEGO-X, relies upon mission-enabling CMOS Monolithic Active Pixel Sensor silicon chip AstroPix. AstroPix is designed for space-based use, featuring low noise, power consumption, high scalability. Desired performance of device include an energy...
In recent years, the gain suppression mechanism has been studied for large localized charge deposits in Low-Gain Avalanche Detectors (LGADs). LGADs are a thin silicon detector with highly doped layer that provides moderate internal signal amplification. Using CENPA Tandem accelerator at University of Washington, response different thicknesses to MeV-range energy from proton beam were studied. Three LGAD prototypes 50~$\mu$m, 100~$\mu$m, 150~$\mu$m characterized. The devices' was determined...
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Die Langversion der S3-Leitlinie "Diagnostik und Therapie des Hepatozellulären Karzinoms biliären Karzinome" umfasst zwei Tumorentitäten. letzte Version Leitlinie wurde im August 2023 veröffentlicht.
Die Langversion der S3-Leitlinie "Diagnostik und Therapie des Hepatozellulären Karzinoms biliären Karzinome" umfasst zwei Tumorentitäten. letzte Version Leitlinie wurde im August 2023 veröffentlicht.
Dr. Sabrina GroßFachärztin für Innere Medizin und Gastroenterologie Medizinische Klinik Universitätsklinikum Tübingen
Die S3-Leitlinie "Diagnostik und Therapie des Hepatozellulären Karzinoms der biliären Karzinome" umfasst zwei Tumorentitäten. letzte Version Leitlinie wurde im August 2023 veröffentlicht.