NASA NTRS · 19980107920
RXTE Observations of Cas A
Abstract
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.
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Rothschild, R. E., Lingenfelter, R. E., Heindl, W. A., Blanco, P. R., Pelling, M. R., Gruber, D. E., Allen, G. E., Jahoda, K., Swank, J. H., Woosley, S. E., Nomoto, K., Higdon, J. C., Dermer, Charles D., Strickman, Mark S., Kurfess, James D.. 1997-01-01. RXTE Observations of Cas A. https://ntrs.nasa.gov/citations/19980107920
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