Improved COMPTEL maps of the Milky Way
R.Diehl, W.Collmar, A.Iyudin, A.W.Strong
COMPTEL has the capability of mapping the sky in the 1-30 MeV
regime with an angular resolution of 1-3 degrees and an energy
resolution of 5-10% FWHM. The data analysis is complicated by
the dominant (time-variable) instrumental background and the
complexe response of the instrument. In mapping gamma-ray line
emission, the removal of the celestial continuum radiation
introduces another challenging problem. In order to study
continuum point sources along the Milky Way (apart from pulsars),
the diffuse emission has to be modelled out carefully. We have
gradually learned how to deal more accurately with these
important `background' aspects. We demonstrate here our broad
progress, presenting maps of e.g. the total galactic continuum
emission, of (candidate) point sources, of the Al-26 1.809 MeV
line, and of the Ti-44 1.157 MeV line. Also spectra of the
galactic continuum emission and the cosmic background are
extracted in this unified analysis technique of the COMPTEL data.
File translated from TEX by TTH, version 2.32.
On 16 Jul 1999, 09:19.