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Boinc projekt7/28/2023 What must be taken into account with these applications is that depending on the CPU architecture, generation, model, version, speed and number of utilized cores, in some cases the FMA applications may run slower than the corresponding AVX ones because of how those instructions are handled on different architectures, details that I'll not going further here as there is a lot of information on Internet. It was built to support both Linux and Windows OS with 64bit architecture. We are happy to present you another set of applications that will utilize those CPUs, which possess the FMA instruction set! Moreover, in order to reveal biases in the method and reconstruct the real distribution of physical parameters in the asteroid population, it is necessary to process large data sets of 'synthetic' is based at Astronomical Institute, Charles University in Prague. In such cases, the lightcurve inversion is very time-consuming and the distributed computation is the only way how to efficiently deal with photometry of hundres of thousands of asteroids. The data is processed using the lightcurve inversion method and a 3D shape model of an asteroid together with the rotation period and the direction of the spin axis are derived.īecause the photometric data from all-sky surveys are typically sparse in time, the rotation period is not directly 'visible' in the data and the huge parameter space has to be scanned to find the best solution. The BOINC application uses photometric measurements of asteroids observed by professional big all-sky surveys as well as 'backyard' astronomers. The project was started with the aim to significanly enlarge our knowledge of physical properties of asteroids. If a sufficient number of lightcurves observed under various geometries is collected, a unique physical model of the asteroid can be reconstucted by the lightcurve inversion method. The shape of a lightcurve depends on the shape of asteroid and also on the viewing and illumination geometry. This variation of brightness with time is called a lightcurve. Other physical parameters (the shape, the rotation period, direction of the rotation axis.) are known only for hundreds of objects.īecause asteroids have in general irregular shapes and they rotate, the amount of sunlight they scatter towards the observer varies with time. For a significant part of the population, only the size of the bodies is known. Altough the total number of known asteroids is large, very little is known about the physical properties of individual objects. So far, hundreds of thousands of asteroids are known, with hundres of new discoveries every day. What is is a research project that uses Internet-connected computers to do research in You can participate by downloading and running a free program on your computer.Īsteroids are the most numerous objects in the solar system.
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