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| term | definition | link |
|---|---|---|
| RA | (right ascension) | |
| ROI | (region of interest) The ROI is the region of space that is being analyzed. A typical ROI for an individual source (such as a pulsar or a gamma-ray burst) is 10 or 12 degrees, although the exact size can differ and depends on the many factors. | |
| ROOT, .root file | ROOT is an object oriented software package built on C++ by particle physicists at CERN to analysis analyze large amounts of data. The Merit files are root files and require ROOT to read the data form from said file. | http://root.cern.ch/drupal/ |
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