Publication Date:
2019-07-13
Description:
The exciting detection by the COMPTEL instrument of the 1157 keV Ti-44 line from the supernova remnant Cas A sets important new constraints on supernova dynamics and nucleosynthesis. The Ti-44 decay also produces x-ray lines at 68 and 78 keV, whose flux should be essentially the same as that of the gamma ray line. The revised COMPTEL flux of 4 x l0(exp -5) cm(exp -2)s(exp -1) is very near the sensitivity limit for line detection by the HEXTE instrument on RXTE. We report on the results from two RXTE observations - 20 ks during In Orbit Checkout in January 1996 and 200 ks in April 1996. We also find a strong continuum emission suggesting cosmic ray electron acceleration in the remnant.
Keywords:
Astronomy
Type:
NASA/CR-97-207825
,
NAS 1.26:207825
,
AIP-CP-410
,
Compton Symposium; Apr 01, 1997; Williamsburg, VA; United States|; 1089-1093
Format:
application/pdf
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