Though our specific implementation uses the NIMROD extended MHD (Sovinec et al., 2004 [22]) and GENRAY RF (Smirnov et al., 1994 [23]) codes, the approach presented can be applied more generally to any code coupling requiring the mapping of ray tracing data onto Eulerian grids.
The team compared a sky map of gamma rays generated by the Energetic Gamma Ray Experiment Telescope (EGRET) satellite to maps of atomic hydrogen, carbon monoxide, and dust within 1500 light years of earth.
The mapping function of arbitrary ray in incident plane and image plane was deduced based on the law of conservation of energy.
The findings, which Dr. McCammon, a professor of physics at the University of Wisconsin-Madison, described as "more complicated than we thought," contributed to a mapping of X-ray sources and raised questions, still unanswered, about how stars are actually formed.
Lower row maps of X-ray electron probe microanalyzer by characteristic calcium radiation.
Before the launch of X-ray-observing satellites, such as the Chandra X-ray Observatory, X-ray observations generally had quite low angular resolution, but when the Moon passes in front of the nebula, its position is very accurately known, and so the variations in the nebula's brightness can be used to create maps of X-ray emission.
The first gamma-ray map of the sky, generated 2 years ago by a space telescope called the Compton Gamma-Ray Observatory, was dominated by gamma-rays coming from the center of the Milky Way, where intense star formation occurs, and by a few bright sources outside our galaxy.
f Qualitative X-ray map of Al.
And the sharp, color-coded x-ray map of the heart of a globular cluster revealed some surprises.
Fig. 1 a Microphotograph in plane polarized light and b X-ray map of Al concentrations showing the characteristics of retrogressed mafic schist in the Sanbagawa metamorphic belt.
