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Astronomers learn much of what they know about the mass, brightness, and size of stars by observing binary systems, in which two stars orbit each other, periodically cutting off the others light. This book provides astronomers with a guide to specifying an astrophysical model for a set of observations, selecting an algorithm to determine the parameters of the model, and estimating the errors of the parameters.
Have you ever stopped at a construction project on the way to your of?ce and the day's astrophysics? Remember the other onlookers - folks just enjoying the sp- tacle, as we all do in
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Produktbeschreibung
Astronomers learn much of what they know about the mass, brightness, and size of stars by observing binary systems, in which two stars orbit each other, periodically cutting off the others light. This book provides astronomers with a guide to specifying an astrophysical model for a set of observations, selecting an algorithm to determine the parameters of the model, and estimating the errors of the parameters.
Have you ever stopped at a construction project on the way to your of?ce and the day's astrophysics? Remember the other onlookers - folks just enjoying the sp- tacle, as we all do in following developments away from our areas of active work? We are excited and thrilled when the Hubble Space Telescope discovers an Einstein Cross, when the marvelous pulsars enter our lives, and when computer scientists put a little box on our desk that outperforms yesterday's giant machines. We are free to make use of such achievements and we respect the imagination and discipline needed to bring them about, just as onlookers respect the abilities and planning needed to create a building they may later use. After all, each of us contributes in our own areas as best as we can. In addition to the serious onlookers there will be passersby who take only a casual look at the site. They may use the building later, but have little or no interest in its construction and give no thought to the resources needed tobring it to completion. Upon arriving at work, those persons write astronomy and astrophysics books at various levels, in which they must say something about close binary stars. Usually a page or two will do, and the emphasis is on the MLR (mass, luminosity, radius) data obtained only from binaries.
Autorenporträt
Prof. Dr. Josef Kallrath ist in der Praxis und Lehre tätig und löst mit Wissenschaftlichem Rechnen praktische Probleme in der Industrie. Schwerpunkt seiner Tätigkeit ist die Mathematische Optimierung zur Unterstützung von Entscheidungsprozessen und die Modellierung physikalischer Systeme. Lehrtätigkeiten übte er an der Universität Heidelberg und derzeitig an der University of Florida in Gainesville/USA aus. Seit 2002 leitet er die Arbeitsgruppe 'raxis der mathematischen Optimierung' der Gesellschaft für Operations Research (GOR).