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Related papers: Distance to the IBEX Ribbon Source Inferred from P…

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Observations of energetic neutral atoms (ENAs) allow for remote studies of the plasma condition in the heliosphere and the neighboring local interstellar medium. The first IBEX results revealed an arc-like enhancement of the ENA intensity…

Solar and Stellar Astrophysics · Physics 2018-01-30 Paweł Swaczyna , Maciej Bzowski , Justyna M. Sokół

The brightest and most surprising feature in the first all-sky maps of Energetic Neutral Atoms (ENA) emissions (0.2-6 keV) produced by the Interstellar Boundary Explorer (IBEX) is an almost circular ribbon of a ~140{\deg} opening angle,…

Astrophysics of Galaxies · Physics 2015-05-18 S. Grzedzielski , M. Bzowski , A. Czechowski , H. O. Funsten , D. J. McComas , N. A. Schwadron

The Energetic Neutral Atom (ENA) full-sky maps obtained with the Interstellar Boundary Explorer (IBEX) show an unexpected bright narrow band of increased intensity. This so-called ENA ribbon results from charge exchange of interstellar…

Solar and Stellar Astrophysics · Physics 2015-10-07 Adama Sylla , Horst Fichtner

A Ribbon of enhanced energetic neutral atom (ENA) emissions was discovered by the Interstellar Boundary Explorer (IBEX) in 2009, redefining our understanding of the heliosphere boundaries and the physical processes occurring at the…

Solar and Stellar Astrophysics · Physics 2024-11-26 Maher A. Dayeh , Eric J. Zirnstein , Pawel Swaczyna , David J. McComas

The Interstellar Boundary Explorer (IBEX) spacecraft is providing the first all-sky maps of the energetic neutral atoms (ENAs) produced by charge-exchange between interstellar neutral \HI\ atoms and heliospheric solar wind and pickup ions…

One of the most remarkable discoveries by the IBEX is the ribbon - a narrow band of enhanced ENA fluxes observed in the sky. The prevailing explanation attributes the IBEX ribbon to the secondary ENA mechanism. In this process, primary H…

Space Physics · Physics 2025-05-28 Igor Baliukin , Vladislav Izmodenov

The Interstellar Boundary Explorer (IBEX) mission is exploring the frontiers of the heliosphere where energetic neutral atoms (ENAs) are formed from charge exchange between interstellar neutral hydrogen atoms and solar wind ions and pickup…

Astrophysics of Galaxies · Physics 2015-03-17 Priscilla C. Frisch , David J. McComas

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…

Variations in the spatial configuration of the interstellar magnetic field (ISMF) near the Sun can be constrained by comparing the ISMF direction at the heliosphere found from the Interstellar Boundary Explorer spacecraft (IBEX)…

NASA's Interstellar Boundary Explorer (IBEX) satellite collects data on energetic neutral atoms (ENAs) that can provide insight into the heliosphere boundary between our solar system and interstellar space. Using these data, scientists can…

Full sky maps of energetic neutral atoms (ENA) obtained with the Interstellar Boundary Explorer revealed a bright, arc-like Ribbon. We compare possible, though as yet undetected, He ENA emission in two models of the Ribbon origin. The…

Solar and Stellar Astrophysics · Physics 2014-02-05 P. Swaczyna , S. Grzedzielski , M. Bzowski

The Interstellar Boundary Explorer (IBEX) images the heliosphere by observing energetic neutral atoms (ENAs). The IBEX-Hi instrument onboard IBEX provides full-sky maps of ENA fluxes produced in the heliosphere and very local interstellar…

Space Physics · Physics 2023-06-07 P. Swaczyna , M. A. Dayeh , E. J. Zirnstein

We present new kinetic-gasdynamic model of the solar wind interaction with the local interstellar medium. The model incorporates several processes suggested by McComas et al. (2009) for the origin of the heliospheric ENA ribbon -- the most…

Solar and Stellar Astrophysics · Physics 2015-05-18 S. V. Chalov , D. B. Alexashov , D. McComas , V. V. Izmodenov , Yu. G. Malama , N. Schwadron

The narrow ribbon of enhanced energetic neutral atom flux observed by the Interstellar Boundary Explorer (IBEX) spacecraft has prompted numerous ideas to explain its structure and properties. One of these ideas is the "neutral solar wind"…

Solar and Stellar Astrophysics · Physics 2015-06-19 Philip A. Isenberg

Several concepts for heliospheric missions operating at heliocentric distances far beyond Earth orbit are currently investigated by the scientific community. The mission concept of the Interstellar Probe (McNutt et al. 2018), e.g., aims at…

Solar and Stellar Astrophysics · Physics 2020-01-08 Andre Galli , Peter Wurz , Horst Fichtner , Yoshifumi Futaana , Stas Barabash

The solar wind carves in the interstellar plasma a cavity bounded by a surface, called the heliopause (HP), that separates the plasma and magnetic field of solar origin from the interstellar ones. It is now generally accepted that in August…

Solar and Stellar Astrophysics · Physics 2015-06-22 Jolanta Grygorczuk , Andrzej Czechowski , Stanislaw Grzedzielski

Understanding the outer heliospheric interface is a major challenge, especially in the light of recent observations by the IBEX and Voyager missions. We present further details on a new required theoretical correction that has been…

Solar and Stellar Astrophysics · Physics 2014-08-27 M. Siewert , H. -J. Fahr

The spiral arms of the Milky Way are being accurately located for the first time via trigonometric parallaxes of massive star forming regions with the BeSSeL Survey, using the Very Long Baseline Array and the European VLBI Network, and with…

Astrophysics of Galaxies · Physics 2016-06-01 M. J. Reid , T. M. Dame , K. M. Menten , A. Brunthaler

Observations of the energetic neutral atoms (ENAs) of heliospheric origin by IBEX differ from expectations based on heliospheric models. It was proposed that the structure of the heliosphere may be similar to the "two-stream" model derived…

Solar and Stellar Astrophysics · Physics 2015-07-03 A. Czechowski , J. Grygorczuk , D. J. McComas

NASA's Interstellar Boundary Explorer (IBEX) mission has recently opened a new window on the interstellar medium (ISM) by imaging neutral atoms. One "bright" feature in the sky is the interstellar wind flowing into the solar system.…

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