skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Seven Years of Imaging the Global Heliosphere with IBEX

Abstract

The Interstellar Boundary Explorer ( IBEX ) has now operated in space for 7 years and returned nearly continuous observations that have led to scientific discoveries and reshaped our entire understanding of the outer heliosphere and its interaction with the local interstellar medium. Here we extend prior work, adding the 2014–2015 data for the first time, and examine, validate, initially analyze, and provide a complete 7-year set of Energetic Neutral Atom (ENA) observations from ∼0.1 to 6 keV. The data, maps, and documentation provided here represent the 10th major release of IBEX data and include improvements to various prior corrections to provide the citable reference for the current version of IBEX data. We are now able to study time variations in the outer heliosphere and interstellar interaction over more than half a solar cycle. We find that the Ribbon has evolved differently than the globally distributed flux (GDF), with a leveling off and partial recovery of ENAs from the GDF, owing to solar wind output flattening and recovery. The Ribbon has now also lost its latitudinal ordering, which reflects the breakdown of solar minimum solar wind conditions and exhibits a greater time delay than for the surrounding GDF. Together, themore » IBEX observations strongly support a secondary ENA source for the Ribbon, and we suggest that this be adopted as the nominal explanation of the Ribbon going forward.« less

Authors:
;  [1]; ; ;  [2]; ; ;  [3];  [4]; ;  [5]; ; ;  [6];  [7]
  1. Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)
  2. Space Research Centre of the Polish Academy of Sciences, Bartycka 18A, 00-716, Warsaw (Poland)
  3. Southwest Research Institute, P.O. Drawer 28510, San Antonio, TX 78228 (United States)
  4. Los Alamos National Laboratory, Intelligence and Space Research Division, P.O. Box 1663, Los Alamos, NM 87545 (United States)
  5. University of Montana, 32 Campus Drive, Missoula, MT 59812 (United States)
  6. University of New Hampshire, Space Science Center, Morse Hall Rm 407, Durham, NH 03824 (United States)
  7. Institute for Space-Earth Environmental Research, Nagoya University, Nagoya 464-8601 (Japan)
Publication Date:
OSTI Identifier:
22661132
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal, Supplement Series; Journal Volume: 229; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ATOMS; CORRECTIONS; HELIOSPHERE; INTERSTELLAR SPACE; MAGNETIC FIELDS; SOLAR CYCLE; SOLAR WIND; SPACE; SUN; TIME DELAY; VARIATIONS

Citation Formats

McComas, D. J., Zirnstein, E. J., Bzowski, M., Kubiak, M. A., Sokół, J. M., Dayeh, M. A., Fuselier, S. A., Szalay, J. R., Funsten, H. O., Janzen, P. H., Reisenfeld, D. B., Kucharek, H., Möbius, E., Schwadron, N. A., and Tokumaru, M., E-mail: dmccomas@princeton.edu. Seven Years of Imaging the Global Heliosphere with IBEX. United States: N. p., 2017. Web. doi:10.3847/1538-4365/AA66D8.
McComas, D. J., Zirnstein, E. J., Bzowski, M., Kubiak, M. A., Sokół, J. M., Dayeh, M. A., Fuselier, S. A., Szalay, J. R., Funsten, H. O., Janzen, P. H., Reisenfeld, D. B., Kucharek, H., Möbius, E., Schwadron, N. A., & Tokumaru, M., E-mail: dmccomas@princeton.edu. Seven Years of Imaging the Global Heliosphere with IBEX. United States. doi:10.3847/1538-4365/AA66D8.
McComas, D. J., Zirnstein, E. J., Bzowski, M., Kubiak, M. A., Sokół, J. M., Dayeh, M. A., Fuselier, S. A., Szalay, J. R., Funsten, H. O., Janzen, P. H., Reisenfeld, D. B., Kucharek, H., Möbius, E., Schwadron, N. A., and Tokumaru, M., E-mail: dmccomas@princeton.edu. Sat . "Seven Years of Imaging the Global Heliosphere with IBEX". United States. doi:10.3847/1538-4365/AA66D8.
@article{osti_22661132,
title = {Seven Years of Imaging the Global Heliosphere with IBEX},
author = {McComas, D. J. and Zirnstein, E. J. and Bzowski, M. and Kubiak, M. A. and Sokół, J. M. and Dayeh, M. A. and Fuselier, S. A. and Szalay, J. R. and Funsten, H. O. and Janzen, P. H. and Reisenfeld, D. B. and Kucharek, H. and Möbius, E. and Schwadron, N. A. and Tokumaru, M., E-mail: dmccomas@princeton.edu},
abstractNote = {The Interstellar Boundary Explorer ( IBEX ) has now operated in space for 7 years and returned nearly continuous observations that have led to scientific discoveries and reshaped our entire understanding of the outer heliosphere and its interaction with the local interstellar medium. Here we extend prior work, adding the 2014–2015 data for the first time, and examine, validate, initially analyze, and provide a complete 7-year set of Energetic Neutral Atom (ENA) observations from ∼0.1 to 6 keV. The data, maps, and documentation provided here represent the 10th major release of IBEX data and include improvements to various prior corrections to provide the citable reference for the current version of IBEX data. We are now able to study time variations in the outer heliosphere and interstellar interaction over more than half a solar cycle. We find that the Ribbon has evolved differently than the globally distributed flux (GDF), with a leveling off and partial recovery of ENAs from the GDF, owing to solar wind output flattening and recovery. The Ribbon has now also lost its latitudinal ordering, which reflects the breakdown of solar minimum solar wind conditions and exhibits a greater time delay than for the surrounding GDF. Together, the IBEX observations strongly support a secondary ENA source for the Ribbon, and we suggest that this be adopted as the nominal explanation of the Ribbon going forward.},
doi = {10.3847/1538-4365/AA66D8},
journal = {Astrophysical Journal, Supplement Series},
number = 2,
volume = 229,
place = {United States},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}