Variability in the Position of the IBEX Ribbon over Nine Years: More Observational Evidence for a Secondary ENA Source
Abstract
The ribbon of enhanced energetic neutral atom flux, discovered by the Interstellar Boundary Explorer (IBEX) in 2009, has redefined our understanding of the heliosphere's interaction with the local interstellar medium (LISM). Yet, its origin continues to be a topic of scientific debate. The ribbon is circular and traces the region where the putative LISM magnetic field (BLISM) is perpendicular to the radial direction from the Sun. Using nine years of IBEX-Hi observations, we investigate the ribbon circularity and location as functions of time and energy. We provide updated locations of the ribbon center at five energy passbands (centered at 0.7, 1.1, 1.7, 2.7, and 4.3 keV) in ecliptic coordinates [longitude, latitude]: [217$$_˙^°$$dg41 ± 0$$_˙^°$$dg95, 44$$_˙^°$$dg36 ± 0$$_˙^°$$dg93], [219$$_˙^°$$dg72 ± 0$$_˙^°$$dg95, 41$$_˙^°$$dg50 ± 0$$_˙^°$$dg87], [220$$_˙^°$$dg51 ± 1$$_˙^°$$dg19, 39$$_˙^°$$dg96 ± 1$$_˙^°$$dg00], [218$$_˙^°$$dg08 ± 1$$_˙^°$$dg66, 38$$_˙^°$$dg44 ± 1$$_˙^°$$dg24], and [214$$_˙^°$$dg68 ± 1$$_˙^°$$dg48, 34$$_˙^°$$dg13 ± 1$$_˙^°$$dg19] respectively. The weighted mean center location over all energies and all years is [218$$_˙^°$$dg33 ± 0$$_˙^°$$dg68, 40$$_˙^°$$dg38 ± 0$$_˙^°$$dg88] and its radius is 74$$_˙^°$$dg81 ± 0$$_˙^°$$dg65. As viewed by IBEX at 1 au, we find that (1) the ribbon is stable over time, with distinct centers at each energy; (2) ribbon centers exhibit small temporal variations, likely caused by the solar wind (SW) speed and density variations; and (3) ribbon location in the sky appears to be driven by (i) the inherent alignment of the ribbon centers along the plane connecting the presumed BLISM and the heliospheric upwind direction, and (ii) the variable SW structure along the heliographic meridian, further emphasizing that the ribbon source is outside the heliosphere.
- Authors:
-
- Southwest Research Inst., San Antonio, TX (United States)
- Princeton Univ., NJ (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of Alabama, Huntsville, AL (United States)
- Univ. of New Hampshire, Durham, NH (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- National Aeronautics and Space Administration (NASA)
- OSTI Identifier:
- 1597367
- Report Number(s):
- LA-UR-19-31222
Journal ID: ISSN 1538-4357; TRN: US2103102
- Grant/Contract Number:
- 89233218CNA000001; 80NSSC17K0597; NNX17AB98G
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal (Online)
- Additional Journal Information:
- Journal Name: The Astrophysical Journal (Online); Journal Volume: 879; Journal Issue: 2; Journal ID: ISSN 1538-4357
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; ISM: atoms; ISM: kinematics and dynamics; ISM: magnetic fields; ISM: structure; solar wind; Sun: heliosphere
Citation Formats
Dayeh, Maher A., Zirnstein, E., Desai, M. I., Funsten, Herbert O. III, Fuselier, S. A., Heerikhuisen, J., McComas, David J., Schwadron, N. A., and Szalay, J. R. Variability in the Position of the IBEX Ribbon over Nine Years: More Observational Evidence for a Secondary ENA Source. United States: N. p., 2019.
Web. doi:10.3847/1538-4357/ab21c1.
Dayeh, Maher A., Zirnstein, E., Desai, M. I., Funsten, Herbert O. III, Fuselier, S. A., Heerikhuisen, J., McComas, David J., Schwadron, N. A., & Szalay, J. R. Variability in the Position of the IBEX Ribbon over Nine Years: More Observational Evidence for a Secondary ENA Source. United States. https://doi.org/10.3847/1538-4357/ab21c1
Dayeh, Maher A., Zirnstein, E., Desai, M. I., Funsten, Herbert O. III, Fuselier, S. A., Heerikhuisen, J., McComas, David J., Schwadron, N. A., and Szalay, J. R. Tue .
"Variability in the Position of the IBEX Ribbon over Nine Years: More Observational Evidence for a Secondary ENA Source". United States. https://doi.org/10.3847/1538-4357/ab21c1. https://www.osti.gov/servlets/purl/1597367.
@article{osti_1597367,
title = {Variability in the Position of the IBEX Ribbon over Nine Years: More Observational Evidence for a Secondary ENA Source},
author = {Dayeh, Maher A. and Zirnstein, E. and Desai, M. I. and Funsten, Herbert O. III and Fuselier, S. A. and Heerikhuisen, J. and McComas, David J. and Schwadron, N. A. and Szalay, J. R.},
abstractNote = {The ribbon of enhanced energetic neutral atom flux, discovered by the Interstellar Boundary Explorer (IBEX) in 2009, has redefined our understanding of the heliosphere's interaction with the local interstellar medium (LISM). Yet, its origin continues to be a topic of scientific debate. The ribbon is circular and traces the region where the putative LISM magnetic field (BLISM) is perpendicular to the radial direction from the Sun. Using nine years of IBEX-Hi observations, we investigate the ribbon circularity and location as functions of time and energy. We provide updated locations of the ribbon center at five energy passbands (centered at 0.7, 1.1, 1.7, 2.7, and 4.3 keV) in ecliptic coordinates [longitude, latitude]: [217$_˙^°$dg41 ± 0$_˙^°$dg95, 44$_˙^°$dg36 ± 0$_˙^°$dg93], [219$_˙^°$dg72 ± 0$_˙^°$dg95, 41$_˙^°$dg50 ± 0$_˙^°$dg87], [220$_˙^°$dg51 ± 1$_˙^°$dg19, 39$_˙^°$dg96 ± 1$_˙^°$dg00], [218$_˙^°$dg08 ± 1$_˙^°$dg66, 38$_˙^°$dg44 ± 1$_˙^°$dg24], and [214$_˙^°$dg68 ± 1$_˙^°$dg48, 34$_˙^°$dg13 ± 1$_˙^°$dg19] respectively. The weighted mean center location over all energies and all years is [218$_˙^°$dg33 ± 0$_˙^°$dg68, 40$_˙^°$dg38 ± 0$_˙^°$dg88] and its radius is 74$_˙^°$dg81 ± 0$_˙^°$dg65. As viewed by IBEX at 1 au, we find that (1) the ribbon is stable over time, with distinct centers at each energy; (2) ribbon centers exhibit small temporal variations, likely caused by the solar wind (SW) speed and density variations; and (3) ribbon location in the sky appears to be driven by (i) the inherent alignment of the ribbon centers along the plane connecting the presumed BLISM and the heliospheric upwind direction, and (ii) the variable SW structure along the heliographic meridian, further emphasizing that the ribbon source is outside the heliosphere.},
doi = {10.3847/1538-4357/ab21c1},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 879,
place = {United States},
year = {2019},
month = {7}
}
Web of Science
Works referenced in this record:
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
Heliolatitude and Time Variations of Solar Wind Structure from in situ Measurements and Interplanetary Scintillation Observations
journal, May 2012
- Sokół, J. M.; Bzowski, M.; Tokumaru, M.
- Solar Physics, Vol. 285, Issue 1-2
Implications of solar wind suprathermal tails for IBEX ENA images of the heliosheath: KAPPA DISTRIBUTIONS AND IBEX ENA FLUX MAPS
journal, June 2008
- Prested, C.; Schwadron, N.; Passuite, J.
- Journal of Geophysical Research: Space Physics, Vol. 113, Issue A6
ERRATUM: “PICK-UP IONS IN THE OUTER HELIOSHEATH: A POSSIBLE MECHANISM FOR THE INTERSTELLAR BOUNDARY EXPLORER RIBBON” (2010, ApJ, 708, L126)
journal, February 2010
- Heerikhuisen, J.; Pogorelov, N. V.; Zank, G. P.
- The Astrophysical Journal, Vol. 710, Issue 2
The Effect of new Interstellar Medium Parameters on the Heliosphere and Energetic Neutral Atoms from the Interstellar Boundary
journal, March 2014
- Heerikhuisen, J.; Zirnstein, E. J.; Funsten, H. O.
- The Astrophysical Journal, Vol. 784, Issue 1
Energetic neutral atom imaging of the heliospheric boundary region
journal, August 2001
- Gruntman, Mike; Roelof, Edmond C.; Mitchell, Donald G.
- Journal of Geophysical Research: Space Physics, Vol. 106, Issue A8
THE HELIOTAIL REVEALED BY THE INTERSTELLAR BOUNDARY EXPLORER
journal, June 2013
- McComas, D. J.; Dayeh, M. A.; Funsten, H. O.
- The Astrophysical Journal, Vol. 771, Issue 2
ANALYTIC MODEL OF THE IBEX RIBBON WITH NEUTRAL SOLAR WIND BASED ION PICKUP BEYOND THE HELIOPAUSE
journal, March 2013
- Möbius, E.; Liu, K.; Funsten, H.
- The Astrophysical Journal, Vol. 766, Issue 2
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
Interstellar Mapping and Acceleration Probe (IMAP): A New NASA Mission
text, January 2018
- McComas, D. J.; Christian, E. R.; Schwadron, N. A.
- Springer
VARIATIONS IN THE HELIOSPHERIC POLAR ENERGETIC NEUTRAL ATOM FLUX OBSERVED BY THE INTERSTELLAR BOUNDARY EXPLORER
journal, February 2012
- Reisenfeld, D. B.; Allegrini, F.; Bzowski, M.
- The Astrophysical Journal, Vol. 747, Issue 2
Categorical data Analysis
journal, February 1998
- Wickens, Thomas D.
- Annual Review of Psychology, Vol. 49, Issue 1
Time Dependence of the IBEX Ribbon and the Globally Distributed Energetic Neutral Atom Flux Using the First 9 Years of Observations
journal, October 2018
- Schwadron, N. A.; Allegrini, F.; Bzowski, M.
- The Astrophysical Journal Supplement Series, Vol. 239, Issue 1
THE INTERSTELLAR NEUTRAL He HAZE IN THE HELIOSPHERE: WHAT CAN WE LEARN?
journal, October 2015
- Sokół, J. M.; Bzowski, M.; Kubiak, M. A.
- The Astrophysical Journal Supplement Series, Vol. 220, Issue 2
Time Dependence of the IBEX Ribbon and the Globally Distributed Energetic Neutral Atom Flux Using the First 9 Years of Observations
text, January 2018
- Schwadron, N. A.; Allegrini, F.; Bzowski, M.
- Institute of Physics Publishing IOP
SYMMETRY OF THE IBEX RIBBON OF ENHANCED ENERGETIC NEUTRAL ATOM (ENA) FLUX
journal, January 2015
- Funsten, H. O.; Bzowski, M.; Cai, D. M.
- The Astrophysical Journal, Vol. 799, Issue 1
WARMER LOCAL INTERSTELLAR MEDIUM: A POSSIBLE RESOLUTION OF THE ULYSSES - IBEX ENIGMA
journal, February 2015
- McComas, D. J.; Bzowski, M.; Frisch, P.
- The Astrophysical Journal, Vol. 801, Issue 1
The Interstellar Magnetic Field Close to the sun. ii.
journal, November 2012
- Frisch, P. C.; Andersson, B-G; Berdyugin, A.
- The Astrophysical Journal, Vol. 760, Issue 2
SPATIAL RETENTION OF IONS PRODUCING THE IBEX RIBBON
journal, January 2013
- Schwadron, N. A.; McComas, D. J.
- The Astrophysical Journal, Vol. 764, Issue 1
Interstellar Mapping and Acceleration Probe (IMAP): A New NASA Mission
journal, October 2018
- McComas, D. J.; Christian, E. R.; Schwadron, N. A.
- Space Science Reviews, Vol. 214, Issue 8
THE ENERGY-DEPENDENT POSITION OF THE IBEX RIBBON DUE TO THE SOLAR WIND STRUCTURE
journal, August 2016
- Swaczyna, Paweł; Bzowski, Maciej; Sokół, Justyna M.
- The Astrophysical Journal, Vol. 827, Issue 1
The Effects of a κ‐Distribution in the Heliosheath on the Global Heliosphere and ENA Flux at 1 AU
journal, July 2008
- Heerikhuisen, J.; Pogorelov, N. V.; Florinski, V.
- The Astrophysical Journal, Vol. 682, Issue 1
Width and Variation of the ENA Flux Ribbon Observed by the Interstellar Boundary Explorer
journal, October 2009
- Fuselier, S. A.; Allegrini, F.; Funsten, H. O.
- Science, Vol. 326, Issue 5955
SPECTRAL PROPERTIES OF REGIONS AND STRUCTURES IN THE INTERSTELLAR BOUNDARY EXPLORER ( IBEX ) SKY MAPS
journal, May 2011
- Dayeh, M. A.; McComas, D. J.; Livadiotis, G.
- The Astrophysical Journal, Vol. 734, Issue 1
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
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
The Interstellar Neutral He haze in the heliosphere: what can we learn?
text, January 2015
- Galli, André; McComas, D. J.; Bzowski, M.
- Institute of Physics Publishing IOP
Comparison of Interstellar Boundary Explorer Observations with 3D Global Heliospheric Models
journal, October 2009
- Schwadron, N. A.; Bzowski, M.; Crew, G. B.
- Science, Vol. 326, Issue 5955
INTERSTELLAR BOUNDARY EXPLORER MEASUREMENTS AND MAGNETIC FIELD IN THE VICINITY OF THE HELIOPAUSE
journal, November 2011
- Pogorelov, Nikolai V.; Heerikhuisen, Jacob; Zank, Gary P.
- The Astrophysical Journal, Vol. 742, Issue 2
Effects of solar wind speed on the secondary energetic neutral source of the Interstellar Boundary Explorer ribbon
journal, January 2016
- Zirnstein, E. J.; Funsten, H. O.; Heerikhuisen, J.
- Astronomy & Astrophysics, Vol. 586
SIMULATIONS OF A DYNAMIC SOLAR CYCLE AND ITS EFFECTS ON THE INTERSTELLAR BOUNDARY EXPLORER RIBBON AND GLOBALLY DISTRIBUTED ENERGETIC NEUTRAL ATOM FLUX
journal, April 2015
- Zirnstein, E. J.; Heerikhuisen, J.; Pogorelov, N. V.
- The Astrophysical Journal, Vol. 804, Issue 1
Structures and Spectral Variations of the Outer Heliosphere in IBEX Energetic Neutral Atom Maps
journal, October 2009
- Funsten, H. O.; Allegrini, F.; Crew, G. B.
- Science, Vol. 326, Issue 5955
CIRCULARITY OF THE INTERSTELLAR BOUNDARY EXPLORER RIBBON OF ENHANCED ENERGETIC NEUTRAL ATOM (ENA) FLUX
journal, September 2013
- Funsten, H. O.; DeMajistre, R.; Frisch, P. C.
- The Astrophysical Journal, Vol. 776, Issue 1
IBEX's Enigmatic Ribbon in the sky and its many possible sources: THE IBEX RIBBON AND ITS SOURCES
journal, February 2014
- McComas, D. J.; Lewis, W. S.; Schwadron, N. A.
- Reviews of Geophysics, Vol. 52, Issue 1
IBEX—Interstellar Boundary Explorer
journal, April 2009
- McComas, D. J.; Allegrini, F.; Bochsler, P.
- Space Science Reviews, Vol. 146, Issue 1-4
Global Observations of the Interstellar Interaction from the Interstellar Boundary Explorer (IBEX)
journal, October 2009
- McComas, D. J.; Allegrini, F.; Bochsler, P.
- Science, Vol. 326, Issue 5955
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
The IBEX Ribbon and the Thickness of the Inner Heliosheath
journal, July 2018
- Fuselier, S. A.; Dayeh, M. A.; Möbius, E.
- The Astrophysical Journal, Vol. 861, Issue 2
LOCAL INTERSTELLAR MAGNETIC FIELD DETERMINED FROM THE INTERSTELLAR BOUNDARY EXPLORER RIBBON
journal, February 2016
- Zirnstein, E. J.; Heerikhuisen, J.; Funsten, H. O.
- The Astrophysical Journal, Vol. 818, Issue 1
A NEW MODEL FOR THE HELIOSPHERE’S “ IBEX RIBBON”
journal, October 2015
- Giacalone, J.; Jokipii, J. R.
- The Astrophysical Journal, Vol. 812, Issue 1
Heliolatitude and time variations of solar wind structure from in situ measurements and interplanetary scintillation observations
text, January 2011
- Sokol, J. M.; Bzowski, M.; Tokumaru, M.
- arXiv
The Interstellar Neutral He haze in the heliosphere: what can we learn?
text, January 2015
- Sokół, Justyna M.; Bzowski, M.; Kubiak, M. A.
- arXiv
The energy-dependent position of the IBEX ribbon due to the solar wind structure
text, January 2016
- Swaczyna, Paweł; Bzowski, Maciej; Sokół, Justyna M.
- arXiv
Seven Years of Imaging the Global Heliosphere with IBEX
text, January 2017
- McComas, D. J.; Zirnstein, E. J.; Bzowski, M.
- arXiv
Works referencing / citing this record:
An Empirical Model of Energetic Neutral Atom Imaging of the Heliosphere and Its Implications for Future Heliospheric Missions at Great Heliocentric Distances
journal, November 2019
- Galli, A.; Wurz, P.; Fichtner, H.
- The Astrophysical Journal, Vol. 886, Issue 1
An Empirical Model of Energetic Neutral Atom Imaging of the Heliosphere and Its Implications for Future Heliospheric Missions at Great Heliocentric Distances
text, January 2019
- Galli, André; Wurz, Peter; Fichtner, H.
- Institute of Physics Publishing IOP