Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1183...11d&link_type=abstract
SHOCK WAVES IN SPACE AND ASTROPHYSICAL ENVIRONMENTS: 18th Annual International Astrophysics Conference. AIP Conference Proceedin
Astronomy and Astrophysics
Astrophysics
1
Interplanetary Matter, Explosions, Solar Wind, Shock Waves, Interplanetary Magnetic Fields, Telescopes, Solar Wind Plasma, Sources Of Solar Wind, Energetic Particles, Particle Emission, Solar Wind, Planetary Bow Shocks, Interplanetary Shocks, Magnetosheath, Astrometric And Interferometric Instruments
Scientific paper
We have surveyed the spectral and compositional properties of suprathermal heavy ions during quiet times from 1995 January 1 to 2008 December 31 using instruments on board ACE and Wind spacecraft in the interplanetary (IP) medium near 1 AU. We find that the composition of the quiet-time suprathermal heavy ion population (3He and C-Fe) depends on the level of solar activity: the ions exhibit SEP-like composition signatures during solar maximum and CIR or solar-wind like composition during solar minimum. In addition, we find that during quietest times in the IP medium, all ion species exhibit suprathermal tails with power-law spectral indices ranging from 1.27 to 2.29, i.e., significantly different from recent observations and theoretical predictions of a unique 1.5 index. We discuss the implications of these new observations for the origin of the suprathermal ion population near 1 AU.
Dayeh M. A.
Desai Mihir I.
Mason Glenn M.
No associations
LandOfFree
Origin of Quiet-Time Suprathermal Heavy Ions Near 1 AU does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Origin of Quiet-Time Suprathermal Heavy Ions Near 1 AU, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Origin of Quiet-Time Suprathermal Heavy Ions Near 1 AU will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1535517