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

This content will become publicly available on June 26, 2020

Title: The Influence of Polar Coronal Holes on the Polar ENA Flux Observed by IBEX

Abstract

Polar coronal holes (PCHs) fill the high-latitude heliosphere with fast solar wind during the minimum phase of the solar cycle. This leads to a hardening of the energy spectrum of the proton plasma in the inner heliosheath (IHS), observed as energetic neutral atoms (ENAs) by the Interstellar Boundary Explorer (IBEX). In particular, the highest-energy channel of the IBEX-Hi instrument (at 4.3 keV) is a very sensitive indicator of pretermination shock fast wind entering the IHS. Herein, we show that the 4.3 keV ENA flux observed from the ecliptic poles is well correlated with the area of the solar surface covered by PCHs throughout the solar cycle, which demonstrates the existence of a direct connection between coronal structure and the dynamic properties of the IHS.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1];  [3]; ORCiD logo [4];  [2]; ORCiD logo [5]; ORCiD logo [6]; ORCiD logo [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Polish Academy of Sciences (CBK PAN), Warsaw (Poland). Space Research Centre
  3. Univ. of Montana, Missoula, MT (United States)
  4. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  5. Princeton Univ., NJ (United States)
  6. Univ. of New Hampshire, Durham, NH (United States). Space Science Center
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA); National Aeronautic and Space Administration (NASA); National Science Centre of Poland (NCN)
OSTI Identifier:
1601396
Report Number(s):
[LA-UR-19-22264]
[Journal ID: ISSN 1538-4357]
Grant/Contract Number:  
[89233218CNA000001; 2015-18-M-ST9-00036]
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
[Journal Name: The Astrophysical Journal (Online); Journal Volume: 879; Journal Issue: 1]; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; heliospheric and magnetospheric physics; solar wind; Sun: corona; Sun: heliosphere

Citation Formats

Reisenfeld, Daniel Brett, Bzowski, Maciej, Funsten III, Herbert O., Janzen, Paul H., Karna, Nishu, Kubiak, Marzena A., McComas, David J., Schwadron, Nathan A., and Sokół, Justyna M. The Influence of Polar Coronal Holes on the Polar ENA Flux Observed by IBEX. United States: N. p., 2019. Web. doi:10.3847/1538-4357/ab22c0.
Reisenfeld, Daniel Brett, Bzowski, Maciej, Funsten III, Herbert O., Janzen, Paul H., Karna, Nishu, Kubiak, Marzena A., McComas, David J., Schwadron, Nathan A., & Sokół, Justyna M. The Influence of Polar Coronal Holes on the Polar ENA Flux Observed by IBEX. United States. doi:10.3847/1538-4357/ab22c0.
Reisenfeld, Daniel Brett, Bzowski, Maciej, Funsten III, Herbert O., Janzen, Paul H., Karna, Nishu, Kubiak, Marzena A., McComas, David J., Schwadron, Nathan A., and Sokół, Justyna M. Wed . "The Influence of Polar Coronal Holes on the Polar ENA Flux Observed by IBEX". United States. doi:10.3847/1538-4357/ab22c0.
@article{osti_1601396,
title = {The Influence of Polar Coronal Holes on the Polar ENA Flux Observed by IBEX},
author = {Reisenfeld, Daniel Brett and Bzowski, Maciej and Funsten III, Herbert O. and Janzen, Paul H. and Karna, Nishu and Kubiak, Marzena A. and McComas, David J. and Schwadron, Nathan A. and Sokół, Justyna M.},
abstractNote = {Polar coronal holes (PCHs) fill the high-latitude heliosphere with fast solar wind during the minimum phase of the solar cycle. This leads to a hardening of the energy spectrum of the proton plasma in the inner heliosheath (IHS), observed as energetic neutral atoms (ENAs) by the Interstellar Boundary Explorer (IBEX). In particular, the highest-energy channel of the IBEX-Hi instrument (at 4.3 keV) is a very sensitive indicator of pretermination shock fast wind entering the IHS. Herein, we show that the 4.3 keV ENA flux observed from the ecliptic poles is well correlated with the area of the solar surface covered by PCHs throughout the solar cycle, which demonstrates the existence of a direct connection between coronal structure and the dynamic properties of the IHS.},
doi = {10.3847/1538-4357/ab22c0},
journal = {The Astrophysical Journal (Online)},
number = [1],
volume = [879],
place = {United States},
year = {2019},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on June 26, 2020
Publisher's Version of Record

Save / Share:

Works referenced in this record:

Long-term evolution in the global distribution of solar wind speed and density fluctuations during 1997-2009: DISTRIBUTION OF SOLAR WIND TURBULENCE
journal, June 2012

  • Tokumaru, Munetoshi; Kojima, Masayoshi; Fujiki, Ken'ichi
  • Journal of Geophysical Research: Space Physics, Vol. 117, Issue A6
  • DOI: 10.1029/2011JA017379

Weaker solar wind from the polar coronal holes and the whole Sun
journal, January 2008

  • McComas, D. J.; Ebert, R. W.; Elliott, H. A.
  • Geophysical Research Letters, Vol. 35, Issue 18
  • DOI: 10.1029/2008GL034896

FIRST SKY MAP OF THE INNER HELIOSHEATH TEMPERATURE USING IBEX SPECTRA
journal, May 2011


IBEX : THE FIRST FIVE YEARS (2009-2013)
journal, July 2014

  • McComas, D. J.; Allegrini, F.; Bzowski, M.
  • The Astrophysical Journal Supplement Series, Vol. 213, Issue 2
  • DOI: 10.1088/0067-0049/213/2/20

North-south asymmetry in global distribution of the solar wind speed during 1985-2013
journal, May 2015

  • Tokumaru, Munetoshi; Fujiki, Ken'ichi; Iju, Tomoya
  • Journal of Geophysical Research: Space Physics, Vol. 120, Issue 5
  • DOI: 10.1002/2014JA020765

Seven Years of Imaging the Global Heliosphere with IBEX
journal, April 2017

  • McComas, D. J.; Zirnstein, E. J.; Bzowski, M.
  • The Astrophysical Journal Supplement Series, Vol. 229, Issue 2
  • DOI: 10.3847/1538-4365/aa66d8

Using Polar Coronal Hole Area Measurements to Determine the Solar Polar Magnetic Field Reversal in Solar Cycle 24
journal, May 2014


Relation between solar wind velocity and properties of its source region
journal, January 2005


The IBEX-Lo Sensor
journal, May 2009


IBEX—Interstellar Boundary Explorer
journal, April 2009


Global Observations of the Interstellar Interaction from the Interstellar Boundary Explorer (IBEX)
journal, October 2009


Cool heliosheath plasma and deceleration of the upstream solar wind at the termination shock
journal, July 2008

  • Richardson, John D.; Kasper, Justin C.; Wang, Chi
  • Nature, Vol. 454, Issue 7200
  • DOI: 10.1038/nature07024

LATITUDE, ENERGY, AND TIME VARIATIONS IN THE ENERGETIC NEUTRAL ATOM SPECTRAL INDICES MEASURED BY THE INTERSTELLAR BOUNDARY EXPLORER ( IBEX )
journal, November 2016


Relation Between Coronal Hole Areas and Solar Wind Speeds Derived from Interplanetary Scintillation Measurements
journal, February 2017


Heliosphere Responds to a Large Solar Wind Intensification: Decisive Observations from IBEX
journal, March 2018

  • McComas, D. J.; Dayeh, M. A.; Funsten, H. O.
  • The Astrophysical Journal, Vol. 856, Issue 1
  • DOI: 10.3847/2041-8213/aab611

Imprint of the Sun’s Evolving Polar Winds on IBEX Energetic Neutral Atom All-sky Observations of the Heliosphere
journal, August 2017

  • Zirnstein, E. J.; Dayeh, M. A.; McComas, D. J.
  • The Astrophysical Journal, Vol. 846, Issue 1
  • DOI: 10.3847/1538-4357/aa850b

VARIATIONS IN THE HELIOSPHERIC POLAR ENERGETIC NEUTRAL ATOM FLUX OBSERVED BY THE INTERSTELLAR BOUNDARY EXPLORER
journal, February 2012


TRACKING THE SOLAR CYCLE THROUGH IBEX OBSERVATIONS OF ENERGETIC NEUTRAL ATOM FLUX VARIATIONS AT THE HELIOSPHERIC POLES
journal, December 2016


Reconstruction of Helio-Latitudinal Structure of the Solar Wind Proton Speed and Density
journal, September 2015


Microstructure of the Heliospheric Termination Shock: Implications for Energetic Neutral atom Observations
journal, December 2009


Solar wind observations over Ulysses' first full polar orbit
journal, May 2000

  • McComas, D. J.; Barraclough, B. L.; Funsten, H. O.
  • Journal of Geophysical Research: Space Physics, Vol. 105, Issue A5
  • DOI: 10.1029/1999JA000383

Voyager 1 Explores the Termination Shock Region and the Heliosheath Beyond
journal, September 2005


Expanding Global Features in the Outer Heliosphere
journal, February 2019

  • McComas, D. J.; Dayeh, M. A.; Funsten, H. O.
  • The Astrophysical Journal, Vol. 872, Issue 2
  • DOI: 10.3847/1538-4357/aafc2c

PLASMA FLOWS AT VOYAGER 2 AWAY FROM THE MEASURED SUPRATHERMAL PRESSURES
journal, October 2014


SPECTRAL PROPERTIES OF REGIONS AND STRUCTURES IN THE INTERSTELLAR BOUNDARY EXPLORER ( IBEX ) SKY MAPS
journal, May 2011


THE FIRST THREE YEARS OF IBEX OBSERVATIONS AND OUR EVOLVING HELIOSPHERE
journal, October 2012

  • McComas, D. J.; Dayeh, M. A.; Allegrini, F.
  • The Astrophysical Journal Supplement Series, Vol. 203, Issue 1
  • DOI: 10.1088/0067-0049/203/1/1

The Interstellar Boundary Explorer High Energy (IBEX-Hi) Neutral Atom Imager
journal, April 2009


Interstellar Pickup Ion Observations to 38 au
journal, November 2017

  • McComas, D. J.; Zirnstein, E. J.; Bzowski, M.
  • The Astrophysical Journal Supplement Series, Vol. 233, Issue 1
  • DOI: 10.3847/1538-4365/aa91d2

Bulk properties of the slow and fast solar wind and interplanetary coronal mass ejections measured by Ulysses: Three polar orbits of observations: THREE ORBITS OF ULYSSES OBSERVATIONS
journal, January 2009

  • Ebert, R. W.; McComas, D. J.; Elliott, H. A.
  • Journal of Geophysical Research: Space Physics, Vol. 114, Issue A1
  • DOI: 10.1029/2008JA013631

Physical Processes in the Outer Heliosphere
journal, June 2009


Simulation of the Solar Wind Dynamic Pressure Increase in 2014 and Its Effect on Energetic Neutral Atom Fluxes from the Heliosphere
journal, May 2018

  • Zirnstein, E. J.; Heerikhuisen, J.; McComas, D. J.
  • The Astrophysical Journal, Vol. 859, Issue 2
  • DOI: 10.3847/1538-4357/aac016

    Works referencing / citing this record:

    Reconstruction of Helio-Latitudinal Structure of the Solar Wind Proton Speed and Density
    journal, September 2015


    Relation between solar wind velocity and properties of its source region
    journal, January 2005


    Expanding Global Features in the Outer Heliosphere
    journal, February 2019

    • McComas, D. J.; Dayeh, M. A.; Funsten, H. O.
    • The Astrophysical Journal, Vol. 872, Issue 2
    • DOI: 10.3847/1538-4357/aafc2c

    Cool heliosheath plasma and deceleration of the upstream solar wind at the termination shock
    journal, July 2008

    • Richardson, John D.; Kasper, Justin C.; Wang, Chi
    • Nature, Vol. 454, Issue 7200
    • DOI: 10.1038/nature07024

    THE FIRST THREE YEARS OF IBEX OBSERVATIONS AND OUR EVOLVING HELIOSPHERE
    journal, October 2012

    • McComas, D. J.; Dayeh, M. A.; Allegrini, F.
    • The Astrophysical Journal Supplement Series, Vol. 203, Issue 1
    • DOI: 10.1088/0067-0049/203/1/1

    Global Observations of the Interstellar Interaction from the Interstellar Boundary Explorer (IBEX)
    journal, October 2009


    Seven Years of Imaging the Global Heliosphere with IBEX
    journal, April 2017

    • McComas, D. J.; Zirnstein, E. J.; Bzowski, M.
    • The Astrophysical Journal Supplement Series, Vol. 229, Issue 2
    • DOI: 10.3847/1538-4365/aa66d8

    Using Polar Coronal Hole Area Measurements to Determine the Solar Polar Magnetic Field Reversal in Solar Cycle 24
    journal, May 2014


    Simulation of the Solar Wind Dynamic Pressure Increase in 2014 and Its Effect on Energetic Neutral Atom Fluxes from the Heliosphere
    journal, May 2018

    • Zirnstein, E. J.; Heerikhuisen, J.; McComas, D. J.
    • The Astrophysical Journal, Vol. 859, Issue 2
    • DOI: 10.3847/1538-4357/aac016

    Physical Processes in the Outer Heliosphere
    journal, June 2009


    The Interstellar Boundary Explorer High Energy (IBEX-Hi) Neutral Atom Imager
    journal, April 2009


    Relation Between Coronal Hole Areas and Solar Wind Speeds Derived from Interplanetary Scintillation Measurements
    journal, February 2017


    Heliosphere Responds to a Large Solar Wind Intensification: Decisive Observations from IBEX
    journal, March 2018

    • McComas, D. J.; Dayeh, M. A.; Funsten, H. O.
    • The Astrophysical Journal, Vol. 856, Issue 1
    • DOI: 10.3847/2041-8213/aab611

    Voyager 1 Explores the Termination Shock Region and the Heliosheath Beyond
    journal, September 2005


    Interstellar Pickup Ion Observations to 38 au
    journal, November 2017

    • McComas, D. J.; Zirnstein, E. J.; Bzowski, M.
    • The Astrophysical Journal Supplement Series, Vol. 233, Issue 1
    • DOI: 10.3847/1538-4365/aa91d2

    TRACKING THE SOLAR CYCLE THROUGH IBEX OBSERVATIONS OF ENERGETIC NEUTRAL ATOM FLUX VARIATIONS AT THE HELIOSPHERIC POLES
    journal, December 2016


    The IBEX-Lo Sensor
    journal, May 2009


    IBEX—Interstellar Boundary Explorer
    journal, April 2009


    IBEX : THE FIRST FIVE YEARS (2009-2013)
    journal, July 2014

    • McComas, D. J.; Allegrini, F.; Bzowski, M.
    • The Astrophysical Journal Supplement Series, Vol. 213, Issue 2
    • DOI: 10.1088/0067-0049/213/2/20

    Imprint of the Sun’s Evolving Polar Winds on IBEX Energetic Neutral Atom All-sky Observations of the Heliosphere
    journal, August 2017

    • Zirnstein, E. J.; Dayeh, M. A.; McComas, D. J.
    • The Astrophysical Journal, Vol. 846, Issue 1
    • DOI: 10.3847/1538-4357/aa850b