A high resolution liquid xenon imaging telescope for 0.3-10 MeV gamma-ray astrophysics: Construction and initial balloon flights

Details A high resolution liquid xenon imaging telescope for 0.3-10 MeV gamma-ray astrophysics: Construction and initial balloon flights A high resolution liquid xenon imaging telescope for 0.3-10 MeV gamma-ray astrophysics: Construction and initial balloon flights

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994cuny.reptr....a&link_type=abstract

Annual Report, 1 Jan. - 31 Dec. 1994 Columbia Univ., New York, NY. Astrophysics Lab.

Astronomy and Astrophysics

Astrophysics

Balloon Flight, Construction, Gamma Ray Astronomy, High Resolution, Imaging Techniques, Liquefied Gases, Position (Location), Red Giant Stars, Telescopes, Xenon, Astrophysics, Cosmic Rays, Galactic Evolution, Galaxies, Gamma Rays, Molecular Clouds, Supernovae, Wolf-Rayet Stars

Scientific paper

An instrument is described which will provide a direct image of gamma-ray line or continuum sources in the energy range 300 keV to 10 MeV. The use of this instrument to study the celestial distribution of the 26Al isotope by observing the 1.809 MeV deexcitation gamma-ray line is illustrated. The source location accuracy is 2' or better. The imaging telescope is a liquid xenon time projection chamber coupled with a coded aperture mask (LXe-CAT). This instrument will confirm and extend the COMPTEL observations from the Compton Gamma-Ray Observatory (CGRO) with an improved capability for identifying the actual Galactic source or sources of 26Al, which are currently not known with certainty. sources currently under consideration include red giants on the asymptotic giant branch (AGB), novae, Type 1b or Type 2 supernovae, Wolf-Rayet stars and cosmic-rays interacting in molecular clouds. The instrument could also identify a local source of the celestial 1.809 MeV gamma-ray line, such as a recent nearby supernova.

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