M. Hartmann

Radial velocity measurements of 42 Draconis

Artie P. Hatzes, V. Perdelwitz, Karjalainen M, Jan Köhler et autres

de, il, cz, sk, us (code pays fourni par la source)

Hipparcos, Gaia, and Radial Velocities Reveal that the Radio-emitting F Star HD 220242 Has an M Dwarf Companion, a Likely Source of the Radio Emission*

Megan Delamer, GuÐmundur Stefánsson, Suvrath Mahadevan, Caleb I. Cañas et autres

Abstract The detection of circularly polarized, low-frequency radio emission offers the tantalizing possibility of observing interactions between stars and their possible substellar companions, as well as direct emission from exoplanets. Additional follow-up of systems with radio emission is key to understanding the …

Hipparcos, Gaia, and RVs reveal that the radio emitting F star HD 220242 has an M dwarf companion, a likely source of the radio emission

Megan Delamer, Guðmundur Stefánsson, Suvrath Mahadevan, Caleb I. Cañas et autres

The detection of circularly polarized, low frequency radio emission offers the tantalizing possibility of the observation of interactions between stars and their possible substellar companions, as well as direct emission from exoplanets. Additional follow up of systems with radio emission is key …

sk, nl, us, es, de, in, cy, pt (code pays fourni par la source)

Clinical practice style is associated with greater isotretinoin use for acne in an integrated health system: An ecological study

Veena Vanchinathan, M. Hartmann, Noah Contreras, Andrew L. Avins et autres

us (code pays fourni par la source)

No Planet around the K Giant Star 42 Draconis

Artie P. Hatzes, V. Perdelwitz, Marie Karjalainen, Jana Köhler et autres

Published radial velocity (RV) measurements of the K giant star 42 Dra reveal variations consistent with a 3.9 M_Jup mass companion in a 479-d orbit. This exoplanet can be confirmed if these variations are long-lived and coherent. Continued monitoring may also reveal …

Variation in isotretinoin use for acne in an integrated health system: an ecological study

Veena Vanchinathan, M. Hartmann, Noah Contreras, Andrew L. Avins et autres

Abstract Isotretinoin is highly effective for treating severe nodulocystic acne but is associated with serious adverse effects and complexity in its use. Understanding variation in isotretinoin prescribing patterns is limited. We conducted a cross-sectional ecological study to measure variation in and predictors …

us (code pays fourni par la source)

A Sanity Check for Planets around Evolved Stars

Michaela P. Döllinger, M. Hartmann

Abstract We present the radius–period plot for exoplanet candidates around giant stars. The diagram contains two distinct regions. While planets of giants with radii smaller than 21 R ⊙ exhibit a wide range of orbital periods, there is evidently a lack of …

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The potential of NIR spectroscopy in the separation of plastics for pyrolysis

Uduak Bassey, Łukasz Rojek, M. Hartmann, Reiner Manfred Creutzburg et autres

The present-day substantial growth in the demand and utilization of plastics provokes severe economic and environmental consequences. Around 4 – 6 % of global oil and gas production is used directly or indirectly as feedstock in the production of plastics. A further …

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A variational method for quantum simulation of time evolution

Samuel A. Wilkinson, Ludwig Nützel, M. Hartmann

CaPS: Casimir Effect in the Plane-Sphere Geometry

M. Hartmann, Gert‐Ludwig Ingold

CaPS is a package for the analysis of the Casimir effect in the plane-sphere geometry.The Casimir force arises due to quantum and thermal fluctuations of the electromagnetic field and is closely related to the van der Waals force (Bordag, Klimchitskaya, Mohideen, & …

de (code pays fourni par la source)

Quantum-assisted finite-element design optimization

Dyon van Vreumingen, Florian Neukart, David Von Dollen, Carsten Othmer et autres

Quantum annealing devices such as the ones produced by D-Wave systems are typically used for solving optimization and sampling tasks, and in both academia and industry the characterization of their usefulness is subject to active research. Any problem that can naturally be …

Role of diffraction in the Casimir effect beyond the proximity force approximation

Vinicius Henning, Benjamin Spreng, M. Hartmann, Gert‐Ludwig Ingold et autres

We derive the leading-order correction to the proximity force approximation (PFA) result for the electromagnetic Casimir interaction in the plane–sphere geometry by developing the scattering approach in the plane-wave basis. Expressing the Casimir energy as a sum over round trips between plane …

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