Spectral analysis in high radiation space backgrounds with robustfitting

摘要

An advanced derivative of ROBFIT spectral analysis software istested for its ability to fit spectra from space. The approach, whichemphasizes the background shape function, is uniquely suited to theidentification of weak-strength nuclides in high-radiation environments,and for analyses in which a suitable off-source background spectrum maynot be available. Compared to earlier analysis usingon-source/off-source subtraction, all data from SN 1987A were combinedand reanalyzed with significant improvement in results