Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...189.0807g&link_type=abstract
American Astronomical Society, 189th AAS Meeting, #08.07; Bulletin of the American Astronomical Society, Vol. 28, p.1284
Astronomy and Astrophysics
Astronomy
Scientific paper
Preliminary results of CUBIC observations of the diffuse X-ray background (DXRB) are presented. The Cosmic X-ray Background Instrument using CCDs (CUBIC), optimized for study of the DXRB, has moderate energy resolution combined with unprecedented sensitivity to energies from 0.2 - 10 keV. While the DXRB emission at 1/4 keV is believed to originate in a million degree low density gas within ~ 100 pc of the sun, the sources of the emission at 3/4 keV are not well understood. The lack of intensity variations perpendicular to the Galactic plane outside of the Loop I/North Polar Spur region cannot be adequately explained by a single galactic or extragalactic source. A set of observations will be made along l = 240(o) at different Galactic latitudes, allowing insight into both the spectral structure and the variation with latitude of various components of the DXRB. Four fields have been observed thus far at l ~ 240(o) , b ~ 37(o,) 54(o,) 72(o,) and 82(o) . Preliminary model fits to the spectra will be shown and discussed. The creation of the CUBIC response matrix from pre-flight calibration data will also be discussed.
Burrows David N.
Grant Catherine E.
Nousek John A.
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