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Global Anisotropies in TeV Cosmic Rays Related to the Sun's Local Galactic Environment from IBEXObservations with the Interstellar Boundary Explorer (IBEX) have shown enhanced energetic neutral atom (ENA) emission from a narrow, circular ribbon likely centered on the direction of the local interstellar medium (LISM) magnetic field. Here, we show that recent determinations of the local interstellar velocity, based on interstellar atom measurements with IBEX, are consistent with the interstellar modulation of high-energy (tera-electron volts, TeV) cosmic rays and diffusive propagation from supernova sources revealed in global anisotropy maps of ground-based high-energy cosmic-ray observatories (Milagro, Asg, and IceCube). Establishing a consistent local interstellar magnetic field direction using IBEX ENAs at hundreds to thousands of eV and galactic cosmic rays at tens of TeV has wide-ranging implications for the structure of our heliosphere and its interactions with the LISM, which is particularly important at the time when the Voyager spacecraft are leaving our heliosphere.
Document ID
20150007919
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Schwadron, N. A.
(New Hampshire Univ. Durham, NH, United States)
Adams, F. C.
(Michigan Univ. Ann Arbor, MI, United States)
Christian, E. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Desiati, P.
(Wisconsin Univ. Madison, WI, United States)
Frisch, P.
(Chicago Univ. Chicago, IL, United States)
Funsten, H. O.
(Los Alamos National Lab. NM, United States)
Jokipii, J. R.
(Arizona Univ. Tucson, AZ, United States)
McComas, D. J.
(Southwest Research Inst. San Antonio, TX, United States)
Moebius, E.
(New Hampshire Univ. Durham, NH, United States)
Zank, G. P.
(Alabama Univ. Huntsville, AL, United States)
Date Acquired
May 12, 2015
Publication Date
February 13, 2014
Publication Information
Publication: Science
Publisher: American Association for the Advancement of Science (AAAS)
Volume: 343
Issue: 6174
Subject Category
Astrophysics
Report/Patent Number
GSFC-E-DAA-TN22280
Report Number: GSFC-E-DAA-TN22280
Funding Number(s)
CONTRACT_GRANT: NNG05EC85C
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Heliosphere
interstellar magnetic field
galactic cosmic rays
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