Rossi X-Ray Timing Explorer Guest Investigator Program

Details Rossi X-Ray Timing Explorer Guest Investigator Program Rossi X-Ray Timing Explorer Guest Investigator Program

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998stin...9914470l&link_type=abstract

Technical Report, NASA Goddard Space Flight Center Greenbelt, MD United States

Computer Science

Supernova Remnants, Galactic Cosmic Rays, Nuclear Fusion, Synchrotron Radiation, X Ray Timing Explorer, Particle Acceleration, Line Spectra, X Rays, Continuous Spectra, Electron Energy, Titanium Isotopes, Scandium Isotopes, Decay

Scientific paper

Rossi X-ray Timing Explorer (RXTE) observations of the bright supernova remnant Cas A have revealed a hard power law component above 10 keV 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 4 x 1013 eV. Measurement of the 1157 keV line by CGRO (Compton Gamma Ray Observatory) from SC-44 in the chain of decay of Ti-44 predicts that the two Ti-44 lines at 68 and 78 keV 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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