Cosmic Ray Neon, Wolf-Rayet Stars, and the Origin of GCRs
نویسندگان
چکیده
W.R. Binns, M.E. Wiedenbeck, M. Arnould, A.C. Cummings, J.S. George, S. Goriely, M.H. Israel, R.A. Leske, R.A. Mewaldt, G. Meynet, L. M. Scott, E.C. Stone, and T.T. von Rosenvinge (a) Washington University, St. Louis, MO 63130 USA (b)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 USA (c)Institut d’Astronomie et d’Astrophysique, U.L.B., Bruxelles, Belgique (d)California Institute of Technology, Pasadena, CA 91125 USA (e)Geneva Observatory, 1290 Sauverny, Switzerland (f)NASA/Goddard Space Flight Center, Greenbelt, MD 20771 USA Presenter: W.R. Binns ([email protected]), usa-binns-W-abs1-og12-oral
منابع مشابه
Superbubbles, Wolf-Rayet stars, and the origin of galactic cosmic rays
The abundances of neon and several other isotopic ratios in the galactic cosmic rays (GCRs) have been measured using data from the Cosmic Ray Isotope Spectrometer (CRIS) aboard the Advanced Composition Explorer (ACE). We have derived the Ne/Ne ratio at the cosmic-ray source using the measured Ne, F, and O abundances as “tracers” of secondary isotope production. Using this approach, the Ne/Ne ab...
متن کاملCosmic-ray Neon, Wolf-rayet Stars, and the Superbubble Origin of Galactic Cosmic Rays
We report the abundances of neon isotopes in the Galactic cosmic rays (GCRs) using data from the Cosmic Ray Isotope Spectrometer (CRIS) aboard the Advanced Composition Explorer (ACE ). These abundances have been measured for seven energy intervals over the energy range of 84 E /M 273MeV nucleon .We have derived the Ne/Ne ratio at the cosmic-ray source using the measured Ne, F, and O abundances ...
متن کاملOB Associations, Wolf-Rayet Stars, and the Origin of Galactic Cosmic Rays
We have measured the isotopic abundances of neon and a number of other species in the galactic cosmic rays (GCRs) using the Cosmic Ray Isotope Spectrometer (CRIS) aboard the ACE spacecraft. Our data are compared to recent results from two-component (Wolf-Rayet material plus solar-like mixtures) Wolf-Rayet (WR) models. The three largest deviations of galactic cosmic ray isotope ratios from solar...
متن کاملThe Neon Abundance of Galactic Wolf–rayet Stars
The fast, dense winds which characterize Wolf-Rayet (WR) stars obscure their underlying cores, and complicate the verification of evolving core and nucleosynthesis models. Core evolution can be probed by measuring abundances of wind-borne nuclear processed elements, partially overcoming this limitation. Using ground-based mid-infrared spectroscopy and the 12.81μm [Ne ii] emission line measured ...
متن کاملGCR Neon Isotopic Abundances: Comparison with Wolf-Rayet Star Models and Meteoritic Abundances
Measurements of the neon isotopic abundances from the ACE-CRIS experiment are presented. These abundances have been obtained in seven energy intervals over the energy range of ~80<E<280 MeV/nucleon. The Ne/Ne source ratio is derived using the measured Ne/Ne abundance as a "tracer" of secondary production of the neon isotopes. We find that the Ne/Ne abundance ratio at the cosmic-ray source is a ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005