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Solar Physics (solar + physics)

Distribution by Scientific Domains
Physics and Astronomy85%

Selected Abstracts

NAM: Is bigger better?

ASTRONOMY & GEOPHYSICS, Issue 3 2009
Article first published online: 29 MAY 200
The success of holding the RAS National Astronomy Meeting as part of an international meeting with the European Astronomy Society and the UK Solar Physics and MIST meetings has prompted many people to wonder: "Should we do this more often?" Sue Bowler reports. [source]

PIN diamond detector development for LYRA, the solar VUV radiometer on board PROBA II

PHYSICA STATUS SOLIDI (A) APPLICATIONS AND MATERIALS SCIENCE, Issue 11 2004
A. BenMoussa
Abstract LYRA (the LYman-alpha RAdiometer onboard PROBA-2) will use diamond detectors for the first time in space solar physics. A set of measurement campaigns was designed to obtain the EUV-to-VIS characterization of the diamond detectors and knowledge of their modes of operation. The outputs of this campaign provide the reference data needed for the optimization of the detectors, and for the LYRA channels definition. The measurements of responsivity in EUV and VUV spectral ranges have been carried out by the Physkalisch-Technische Bundesanstalt (PTB) in Germany at the electron storage ring BESSY II. The detectors spectral responsivity measurements R(,) was done for the following wavelength ranges: 40 to 80 nm, 80 to 120 nm and 120 to 240 nm. The longer wavelength range from 210 nm to 827 nm was measured with the monochromatic light by using a Xe-lamp at IMO-IMOMEC. The diodes exhibit high photoresponse in the deep UV region and over five orders of magnitude in discrimination between deep UV (200 nm) and visible light (550 nm). (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]

A Note on Analysis and Numerics for Radiative MHD in 3D

PROCEEDINGS IN APPLIED MATHEMATICS & MECHANICS, Issue 1 2003
Andreas Dedner
The equations of radiative magnetohydrodynamics describe the dynamics of an electrically conducting fluid interacting with magnetic fields and radiation. In particular they provide a widely accepted mathematical model for the physics in the solar photosphere and convection zone. In the spatially three-dimensional case we present several notions of solutions for the Cauchy problem and discuss existence and uniqueness issues. Furthermore we report on numerical experiments in the context of solar physics. [source]

Considerations for the next generation of solar telescopes: A systems approach to solar physics

ASTRONOMISCHE NACHRICHTEN, Issue 6 2010
A. TitleArticle first published online: 18 JUN 2010
The exciting new high resolution images from the one meter Sunrise balloon telescope and the first images from the 1.6 meter Big Bear telescope together with the continuing data from the 1 meter Swedish Solar Observatory demonstrate the promise of the new generation of multimeter solar telescopes. While the promise of the new generation of telescopes is great the technical challenges to build them will require the efforts of a significant fraction of the solar community. In this talk I will emphasize the need for an integrated systems approach to the development of the telescope, its instruments, its software, and its operations and management structures. The experience of several decades of space mission has taught us a great deal about the value of planning mission development from the definition of the primary scientific objectives to the delivery of the data to the science community. Much of these lessons learned, often painfully, should provide guidance to those in developing the new telescope systems (© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]

Towards using modern data assimilation and weather forecasting methods in solar physics

ASTRONOMISCHE NACHRICHTEN, Issue 3-4 2007
A. S. BrunArticle first published online: 7 MAR 200
Abstract We discuss how data assimilation and forecasting methods developed in Earth's weather prediction models could be used to improve our capability to anticipate solar dynamical phenomena and assimilate the huge amount of data that new solar satellites, such as SDO or Hinode, will provide in the coming years. We illustrate with some simple examples such as the solar magnetic activity cycle, the eruption of CMEs, the real potential of such methods for solar physics. We believe that we now need to jointly develop solar forecasting models, whose purpose are to assimilate observational data in order to improve our predictability power, with "first principle" solar models, whose purpose is to understand the underpinning physical processes behind the solar dynamics. These two complementary approaches should lead to the development of a solar equivalent of Earth's general circulation model. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]

Missing pieces of the solar jigsaw puzzle

ASTRONOMY & GEOPHYSICS, Issue 5 2009
David Tsiklauri
David Tsiklauri reviews the role of small-scale, kinetic effects in the solar corona, throwing new light on unsolved problems of solar physics, such as coronal heating and solar flare particle acceleration. [source]