RXTE observations of Cas A

Details RXTE observations of Cas A RXTE observations of Cas A

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999nuphs..69...68r&link_type=abstract

Nuclear Physics B Proceedings Supplements, Volume 69, Issue 1-3, p. 68-73.

Physics

Nuclear Physics

2

Scientific paper

Rossi X-ray Timing Explorer (RXTE) observations of the bright supernova remnant Cas A have revealed a hard power law component above 10keV in addition to two thermal components inferred from ASCA measurements of the many line centroids from low-Z elements. The power law can be shown to be consistent with synchrotron emission from radio to hard x-rays by electrons of up to 4x1013eV. Measurement of the 1157keV line by CGRO from 44Sc in the chain of decay of 44Ti predicts that the two 44Ti lines at 68 and 78keV should appear at the CGRO intensity. RXTE has placed upper limits on such lines that are marginally consistent with the CGRO measurement. Implications of these results on sites for cosmic ray acceleration and nucleosynthesis are discussed.

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