منابع مشابه
Solar system X - rays from charge exchange processes
1 Max-Planck-Institut für extraterrestrische Physik, Postfach 1312, Giessenbachstraße, D-85741 Garching, Germany 2 Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA 3 Space Physics Laboratory, Vikram Sarabhai Space Centre, Trivandrum 695022, India 4 Department of Physics and Astronomy, California State University, 18111 Nordhoff Street, Northridge, CA 91330, USA 5 Chand...
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Massive axions of the Kaluza-Klein type, created inside the solar core, can be gravitationally trapped by the Sun itself in orbits inside/outside the Sun, where they accumulate over cosmic times. Their spontaneous or ”induced” radiative decay can give rise to various solar phenomena, like the celebrated solar coronal heating, which lacks a conventional explanation since its first observation in...
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Several X-ray PhotoElectron Emission spectroMicroscopes (X-PEEMs) exist around the world at this time. We present recent performance and resolution tests of one of them, the Spectromicroscope for PHotoelectron Imaging of Nanostructures with X-rays (SPHINX) X-PEEM, installed at the University of Wisconsin Synchrotron Radiation Center. With this state-of-the-art instrument we demonstrate chemical...
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Context. Lα is a strong chromospheric emission line, which has been relatively rarely observed in flares. The Transition Region and Coronal Explorer (TRACE) has a broad “Lyman α” channel centered at 1216 Å used primarily at the beginning of the mission. A small number of flares were observed in this channel. Aims. We aim to characterise the appearance and behaviour of a flare and filament eject...
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a phase-locked loop (pll) based frequency synthesizer is an important circuit that is used in many applications, especially in communication systems such as ethernet receivers, disk drive read/write channels, digital mobile receivers, high-speed memory interfaces, system clock recovery and wireless communication system. other than requiring good signal purity such as low phase noise and low spu...
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ژورنال
عنوان ژورنال: Journal of Astrophysics and Astronomy
سال: 2008
ISSN: 0250-6335,0973-7758
DOI: 10.1007/s12036-008-0044-8