New Horizons at Jupiter: Energetic Particle Observations from PEPSSI

Details New Horizons at Jupiter: Energetic Particle Observations from PEPSSI New Horizons at Jupiter: Energetic Particle Observations from PEPSSI

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agusm.p41b..03m&link_type=abstract

American Geophysical Union, Spring Meeting 2007, abstract #P41B-03

Physics

2114 Energetic Particles (7514), 2154 Planetary Bow Shocks, 2744 Magnetotail, 6220 Jupiter

Scientific paper

The Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) instrument on the New Horizons spacecraft began making energetic particle measurements ~1000 Jovian radii ({R}J) upstream of Jupiter beginning in January 2007. Measurements are set to continue through May 2007 when the spacecraft will be ~2000 {R}J downstream of Jupiter. Following its gravity assist en route to Pluto, New Horizon's trajectory remains very near the Sun-Jupiter line, spending the first 40 days after closest approach (~32 {R}J, 28 February) within 100 {R}J of the Sun-Jupiter line and remaining within 300 {R}J through May. This trajectory provides the best opportunity for continuous Jovian magnetotail measurements to date. PEPSSI is a time-of-flight and energy spectrometer with angular coverage in a 25°x160° swath in six angular sectors. The instrument covers ions and electrons within the ~10 to 1000 keV range. A series of upstream events associated with interplanetary activity were measured prior to entry into the Jovian magnetosphere. Increased fluxes of energetic ions and electrons were detected near 70 {R}J, consistent with an inbound crossing of the magnetopause and consistent with similar observations at Jupiter by Voyager 1 and Voyager 2. Preliminary analysis reveals distinct signatures of H, He, O, and S ions, as well as of electrons, and shows highly structured temporal variations. We report on these first results from the PEPSSI instrument during its approach to, and recession from, Jupiter

Affiliated with

Also associated with

No associations

Rating

New Horizons at Jupiter: Energetic Particle Observations from PEPSSI 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 New Horizons at Jupiter: Energetic Particle Observations from PEPSSI, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New Horizons at Jupiter: Energetic Particle Observations from PEPSSI will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1035521