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Article
Solar Magnetoconvection and Small-Scale Dynamo
A number of observational and theoretical aspects of solar magnetoconvection are considered in this review. We discuss recent developments in our understanding of the small-scale structure of the magnetic fiel...
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Article
Solar Dynamics, Rotation, Convection and Overshoot
We discuss recent observational, theoretical and modeling progress made in understanding the Sun’s internal dynamics, including its rotation, meridional flow, convection and overshoot. Over the past few decade...
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Article
Open AccessThe Sunrise Mission
The first science flight of the balloon-borne Sunrise telescope took place in June 2009 from ESRANGE (near Kiruna/Sweden) to Somerset Island in northern Canada. We describe the scientific aims and mission concept...
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Article
How unusual is today's solar activity? (reply)
Muscheler et al.1 claim that the solar activity affecting cosmic rays was much higher in the past than we deduced2 from 14C measurements. However, this claim is ba...
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Chapter
Simulation of Solar Radiative Magneto-Convection
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Article
Unusual activity of the Sun during recent decades compared to the previous 11,000 years
Direct observations of sunspot numbers are available for the past four centuries1,2, but longer time series are required, for example, for the identification of a possible solar influence on climate and for testi...
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Article
Evolution of the Sun's large-scale magnetic field since the Maunder minimum
The most striking feature of the Sun's magnetic field is its cyclic behaviour. The number of sunspots, which are dark regions of strong magnetic field on the Sun's surface, varies with a period of about 11 yea...
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Article
Physical Causes of Solar Variability – Discussion Session 1b
This report is divided into three parts: Section 1 gives a short introduction and a summary of the topics discussed. Section 2 is a position statement by J. Kuhn on the interpretation of the irradiance measure...
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Article
Simulating solar MHD
Two aspects of solar MHD are discussed in relation to the work of the MHD simulation group at KIS. Photospheric magneto-convection, the nonlinear interaction of magnetic field and convection in a strongly stra...
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Article
Oral cytarabine ocfosfate in acute myeloid leukemia and non-Hodgkin’s lymphoma – phase I/II studies and pharmacokinetics
Cytosine arabinoside (AraC) is rapidly inactivated via systemic deamination with half-lives ranging from 1 h (i.v.) to 4 h (s.c.) – and cannot be applied orally due to its hydrophilic properties. These limitat...
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Article
Response to cytarabine ocfosfate (YNK01) in a patient with chronic lymphocytic leukemia refractory to treatment with chlorambucil/prednisone, fludarabine, and prednimustine/mitoxantrone
Cytarabine ocfosfate (YNK01) is a novel orally applicable prodrug of cytosine arabinoside. Recent pharmacokinetic studies have revealed a prolonged release of the cytotoxic agent cytosine arabinoside (araC) f...
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Article
Polarized radiation diagnostics of magnetohydrodynamic models of the solar atmosphere
Solar magnetic elements and their dynamical interaction with the convective surface layers of the Sun are numerically simulated. Radiation transfer in the photosphere is taken into account. A simulation run ov...
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Chapter and Conference Paper
Polarized Radiation Diagnostics of Magnetohydrodynamic Models of the Solar Atmosphere
Solar magnetic elements and their dynamical interaction with the convective surface layers of the Sun are numerically simulated. Radiation transfer in the photosphere is taken into account. A simulation run ov...
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Chapter and Conference Paper
Observation of Surface Activity on Cool Giants with the VLT Interferometer
Surface activity can reveal crucial information on the processes which generate magnetic fields in the interior of cool giants. We discuss how the interferometric mode of VLT can be used to observe active regi...
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Article
Active region asymmetry as a result of the rise of magnetic flux tubes
The magnetic flux tubes that rise across the convection zone to produce active regions are shown to develop a difference in inclination between their preceding and follower sides. This asymmetry is such that t...
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Chapter
Dynamics of Erupting Magnetic Flux Tubes
The eruption of magnetic flux tubes from the overshoot layer due to instability and the dynamics of their subsequent rise through the solar convection zone are followed by numerical simulation. Special emphasi...
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Chapter
Dynamic Interaction of Convection with Magnetic Flux Sheets: First Results of a New MHD Code
Methods, tests, and first results of a new code for the simulation of solar magnetoconvection are presented. Special emphasis is laid on a reliable and economic treatment of small-scale structures like magneti...
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Chapter
Solar Radiation and Structure
At the XXIst IAU General Assembly in Buenos Aires in 1991 the name of Commission 12 was changed from “Radiation and Structure of the Solar Atmosphere” to “Solar Radiation and Structure”. The new name better re...
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Chapter and Conference Paper
Storage of Magnetic Flux in the Overshoot Region
The combined action of the subadiabatic ambient stratification in the overshoot region below the convection zone and the inertial forces associated with the solar rotation is shown to lead to the suppression o...
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Chapter and Conference Paper
On the Stability of Magnetic Flux Tubes in the Equator of a Star
We consider the linear stability of a toroidal flux tube lying in the equatorial plane of a differentially rotating star and investigate its dependence on superadiabaticity, magnetic field strength, and gradie...
