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Title: INTERSTELLAR NEUTRAL ATOMS AT 1 AU OBSERVED BY THE IMAGE/LENA IMAGER

Abstract

Observations from the Imager for Magnetopause to Aurora: Global Exploration (IMAGE) Low Energy Neutral Atom (LENA) imager from 2005 are used to investigate characteristics of interstellar neutrals in the inner solar system. The LENA imager detected an interstellar neutral signal starting in 2004 December and extending to early 2005 April. Using the orientation of the field of view of the imager and the date of the loss of the interstellar neutral signal, it is concluded that the signal is consistent with a relatively compact (several degrees wide in ecliptic latitude and longitude) source of neutral helium and/or energetic (>150 eV) hydrogen originating from the solar apex direction. Observations later in 2005 are used to distinguish the composition and conclude that the relatively compact source likely contains some energetic hydrogen (in addition to the helium)

Authors:
;  [1]
  1. Lockheed Martin Advanced Technology Center, Palo Alto, CA (United States)
Publication Date:
OSTI Identifier:
21307801
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 698; Journal Issue: 2; Other Information: DOI: 10.1088/0004-637X/698/2/1117; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; EXPLORATION; HELIUM; HYDROGEN; MAGNETOPAUSE; SOLAR SYSTEM; SPACE VEHICLES

Citation Formats

Fuselier, S A, Ghielmetti, A G, and Wurz, P. INTERSTELLAR NEUTRAL ATOMS AT 1 AU OBSERVED BY THE IMAGE/LENA IMAGER. United States: N. p., 2009. Web. doi:10.1088/0004-637X/698/2/1117; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
Fuselier, S A, Ghielmetti, A G, & Wurz, P. INTERSTELLAR NEUTRAL ATOMS AT 1 AU OBSERVED BY THE IMAGE/LENA IMAGER. United States. https://doi.org/10.1088/0004-637X/698/2/1117; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)
Fuselier, S A, Ghielmetti, A G, and Wurz, P. 2009. "INTERSTELLAR NEUTRAL ATOMS AT 1 AU OBSERVED BY THE IMAGE/LENA IMAGER". United States. https://doi.org/10.1088/0004-637X/698/2/1117; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
@article{osti_21307801,
title = {INTERSTELLAR NEUTRAL ATOMS AT 1 AU OBSERVED BY THE IMAGE/LENA IMAGER},
author = {Fuselier, S A and Ghielmetti, A G and Wurz, P.},
abstractNote = {Observations from the Imager for Magnetopause to Aurora: Global Exploration (IMAGE) Low Energy Neutral Atom (LENA) imager from 2005 are used to investigate characteristics of interstellar neutrals in the inner solar system. The LENA imager detected an interstellar neutral signal starting in 2004 December and extending to early 2005 April. Using the orientation of the field of view of the imager and the date of the loss of the interstellar neutral signal, it is concluded that the signal is consistent with a relatively compact (several degrees wide in ecliptic latitude and longitude) source of neutral helium and/or energetic (>150 eV) hydrogen originating from the solar apex direction. Observations later in 2005 are used to distinguish the composition and conclude that the relatively compact source likely contains some energetic hydrogen (in addition to the helium)},
doi = {10.1088/0004-637X/698/2/1117; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)},
url = {https://www.osti.gov/biblio/21307801}, journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 698,
place = {United States},
year = {Sat Jun 20 00:00:00 EDT 2009},
month = {Sat Jun 20 00:00:00 EDT 2009}
}