VLISM

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Beyond the Heliopause The Very Local
Interstellar Radiation Environment John F. Cooper

NASA Goddard Space Flight Center

Greenbelt, Maryland, U.S.A
Inner Heliosheath
Heliopause
Outer Heliosheath?
Downstream Heliosphere
VLISM ?
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AcknowledgementsVoyager LECP Team
Matt Hill, Rob
Decker, LECP Web Site/NSSDCVoyager CRS
TeamAlan Cummings, Ed Stone, 30th ICRC,
2007Voyager PLS TeamJohn Richardson, PLS Web
Site/NSSDCSpace Weathering Project, Outer
Planets Research
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IBEX Relevance to Outer Planets the Radiation
Environment
Object trajectories for last 400 years since time
of Galileo Over 30 TS-crossing Scattered Disk
Objects from the Kuiper Belt Over 300 TS-crossing
Oort Cloud comets Largest known dwarf planet,
Eris (2003 UB313), always stays within the
supersonic heliosphere inside TS How do radiation
dosage profiles change in different heliospheric
regions
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SH51A-0250
The Virtual Heliospheric Observatory (VHO) Adam
Szabo, Tom Narock, Jan Merka,Aaron Roberts, Jon
Vandegriff, George Ho,Jim Raines, Peter
Schroeder, Andrew Davis,and Justin
Kasper Virtual Energetic Particle Observatory
(VEPO) Focus group of VHO connecting to the
VxO data provider user environments via VHO
middleware
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Virtual Energetic Particle Observatory
(VEPO) John F. Cooper (PI) , Nand Lal, Robert E.
McGuire,
Thomas W. Narock, and Adam Szabo NASA Goddard
Space Flight Center, Greenbelt, MD Thomas P.
Armstrong, Jerry W. Manweiler,
and J. Douglas Patterson
Fundamental Technologies, Lawrence, KS Matthew
E. Hill and Jon D. Vandegriff Applied Physics
Laboratory / JHU, Laurel, MD Robert B. McKibben
and Clifford Lopate University of New Hamshire,
Durham, NH Cecil Tranquille ESTEC-ESA,
Noordwijk, Netherlands
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In Search of Interstellar Dragonfire
Will IBEX view neutrals from gas-plasma
interactions beyond the heliopause?
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Ptuskin et al., ApJ, 2006.
Modulated spectrum and variability of cosmic ray
protons at 1 AU are well known. Demodulated
interstellar spectrum is model dependent and unconstrained at much lower energies below
100 MeV of interest to IBEX.
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ENA (ST-A/B, MEX, SOHO)
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3-D Surface Irradiation Flux Averaging Convecting
3-D Maxwellian Models for Heliosheath and VLISM
V 26 km/s T
7000 K N 0.1 /cc
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Present Facts Voyager 12 energetic particle
data at the termination shock and in the
heliosheath history of galactic and anomalous
cosmic ray modulation in the heliosphere ACR
measurements at 1 5 AU.
Suggestions
The Theory
Future Facts IBEX neutral atom emissions,
Voyager 12 energetic particle data beyond
heliopause Interstellar Probe ?