Spatial Retention of the IBEX Ribbon Source Particles - Further Work on the Dominant Turbulence Model

13th Annual International Astrophysics Conference: Voyager, IBEX, and the Interstellar Medium

物理学;天文学

Isenberg, Philip A.^1

Space Science Center and Department of Physics, University of New Hampshire, Durham

NH

03824, United States^1

关键词: Energetic neutral atoms;    Further works;    Heliosheath;    Interstellar mediums;    Isotropization;    Observed values;    Ribbon structures;    Source particles;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/577/1/012014/pdf
DOI  :  10.1088/1742-6596/577/1/012014

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

We present an overview of the "dominant turbulence" picture of pickup proton isotropization and its recent application to the spatial retention of these particles in the nearby interstellar medium as an explanation for the IBEX ribbon structure. We report the progress of further modeling in this area, expanding the published model to 3D and adding a contribution of energetic neutral atoms from the inner heliosheath to the ribbon volume. We find that the ribbon flux expected at IBEX from this model is still below the observed value, but the discrepancy is much smaller than that of our previous result.