Observations of neutral atoms from the solar wind

Details Observations of neutral atoms from the solar wind Observations of neutral atoms from the solar wind

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001jgr...10624893c&link_type=abstract

Journal of Geophysical Research, Volume 106, Issue A11, p. 24893-24906

Physics

36

Interplanetary Physics: Neutral Particles, Interplanetary Physics: Solar Wind Plasma, Magnetospheric Physics: Magnetosheath, Magnetospheric Physics: Solar Wind/Magnetosphere Interactions

Scientific paper

We report observations of neutral atoms from the solar wind in the Earth's vicinity with the low-energy neutral atom (LENA) imager on the Imager for Magnetopause-to-Aurora Global Exploration (IMAGE) spacecraft. This instrument was designed to be capable of looking at and in the direction of the Sun. Enhancements in the hydrogen count rate in the solar direction are not correlated with either solar ultraviolet emission or suprathermal ions and are deduced to be due to neutral particles from the solar wind. LENA observes these particles from the direction closest to that of the Sun even when the Sun is not directly in LENA's 90° field of view. Simulations show that these neutrals are the result of solar wind ions charge exchanging with exospheric neutral hydrogen atoms in the postshock flow of the solar wind in the magnetosheath. Their energy is inferred to exceed 300 eV, consistent with solar wind energies, based on simulation results and on the observation of oxygen ions, sputtered from the conversion surface in the time-of-flight spectra. In addition, the sputtered oxygen abundance tracks the solar wind speed, even when IMAGE is deep inside the magnetosphere. These results show that low-energy neutral atom imaging provides the capability to directly monitor the solar wind flow in the magnetosheath from inside the magnetosphere because there is a continuous and significant flux of neutral atoms originating from the solar wind that permeates the magnetosphere.

Affiliated with

Also associated with

No associations

Rating

Observations of neutral atoms from the solar wind 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 Observations of neutral atoms from the solar wind, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of neutral atoms from the solar wind will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1554783