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Virtual Energetic Particle Observatory (VEPO)The Virtual Energetic Particle Observatory (VEPO) focuses on improved discovery, access, and usability of heliospheric energetic particle and ancillary data products from selected spacecraft and sub-orbital instruments of the heliophysics data environment. The energy range of interest extends over the full range of particle acceleration from keV energies of suprathermal seed particles to GeV energies of galactic cosmic ray particles. Present spatial coverage is for operational and legacy spacecraft operating from the inner to the outer heliosphere, e.g. from measurements by the two Helios spacecraft to 0.3 AU to the inner heliosheath region now being traversed by the two Voyager spacecraft. This coverage will eventually be extended inward to ten solar radii by the planned NASA solar probe mission and at the same time beyond the heliopause into the outer heliosheath by continued Voyager operations. The geospace fleet of spacecraft providing near-Earth interplanetary measurements, selected magnetospheric spacecraft providing direct measurements of penetrating interplanetary energetic particles, and interplanetary cruise measurements from planetary spacecraft missions further extend VEPO resources to the domain of geospace and planetary interactions. Ground-based (e.g., neutron monitor) and high-altitude suborbital measurements can expand coverage to the highest energies of galactic cosmic rays affected by heliospheric interaction and of solar energetic particles. Science applications include investigation of solar flare and coronal mass ejection events. acceleration and transport of interplanetary particles within the inner heliosphere, cosmic ray interactions with planetary surfaces and atmospheres, sources of suprathermal and anomalous cosmic ray ions in the outer heliosphere, and solar cycle modulation of galactic cosmic rays. Robotic and human exploration, and eventual habitation, of planetary and space environments beyond the Earth require knowledge of radiation hazards informed by VEPO data resources. The VEPO project has completed the first year of work to define science requirements, to document and register selected data products in SPASE format while evolving SPASE for increased applicability to VEPO data, and to support enhanced discovery and access for these products through the evolving data query and middleware system of the Virtual Heliospheric Observatory (VHO). The VEPO team operates as a heliophysics focus group for energetic particle data resources in partnership with VHO and also leverages existing data services of NASA's Space Physics Data Facility. We invite comments from the U.S. and international data provider and user communities on review of the current VEPO/VHO user interface, on directions for future evolution of VEPO and supporting data systems including VHO and SPDF, and on relations to other elements of the heliophysics virtual observatory environment.
Document ID
20090006743
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Cooper, John F.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Lal, Nand
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
McGuire, Robert E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Szabo, Adam
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Narock, Thomas W.
(Maryland Univ. Greenbelt, MD, United States)
Armstrong, Thomas P.
(Fundamental Technologies, LLC Lawrence, KS, United States)
Manweiler, Jerry W.
(Fundamental Technologies, LLC Lawrence, KS, United States)
Patterson, J. Douglas
(Fundamental Technologies, LLC Lawrence, KS, United States)
Hill, Matthew E.
(Johns Hopkins Univ. Laurel, MD, United States)
Vandergriff, Jon D.
(Johns Hopkins Univ. Laurel, MD, United States)
McKibben, Robert B.
(New Hampshire Univ. Durham, NH, United States)
Lopate, Clifford
(New Hampshire Univ. Durham, NH, United States)
Tranquille, Cecil
(European Space Agency. European Space Research and Technology Center, ESTEC Noordwijk, Netherlands)
Date Acquired
August 24, 2013
Publication Date
December 13, 2008
Subject Category
Astrophysics
Meeting Information
Meeting: 2008 Fall American Geophysical Union Meeting
Location: San Francisco, CA
Country: United States
Start Date: December 13, 2008
End Date: December 21, 2008
Distribution Limits
Public
Copyright
Other

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