IBEX Ribbon: What Could it Tell About the Local Interstellar Magnetic Field?

We show that the shape of the IBEX Ribbon can be reproduced assuming energetic neutral atoms originate in regions beyond the heliopause where the interstellar magnetic field is the strongest and perpendicular to radial directions from the Sun. The best fit to the observed ribbon was obtained for the...

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Bibliographic Details
Published in:Astrophysical journal. Letters 2011-02, Vol.727 (2), p.L48-jQuery1323918510630='47'
Main Authors: Grygorczuk, J, Ratkiewicz, R, Strumik, M, Grzedzielski, S
Format: Article
Language:English
Subjects:
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
ATMOSPHERES
FLUID MECHANICS
HELIOSPHERE
HYDRODYNAMICS
INTERSTELLAR MAGNETIC FIELDS
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
MAIN SEQUENCE STARS
MECHANICS
SOLAR ACTIVITY
SOLAR ATMOSPHERE
SOLAR WIND
STARS
STELLAR ACTIVITY
STELLAR ATMOSPHERES
STELLAR WINDS
SUN
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Summary:We show that the shape of the IBEX Ribbon can be reproduced assuming energetic neutral atoms originate in regions beyond the heliopause where the interstellar magnetic field is the strongest and perpendicular to radial directions from the Sun. The best fit to the observed ribbon was obtained for the local interstellar magnetic field B {infinity} = 3.0 ? 1.0 Delta *mG pointing from ecliptic/galactic coordinates ( Delta *l, Delta *b)/(l, b) = (225? ? 5?, 35? ? 5?)/(27? ? 5?, 51? ? 5?) close to the apparent ribbon center ( Delta *l, Delta *b)/(l, b) = (221?, 39?)/(33?, 55?). The geometrical considerations presented below should prove useful in identifying the mechanism of ribbon formation.
ISSN:2041-8205
2041-8213
DOI:10.1088/2041-8205/727/2/L48