The IBEX ribbon as a signature of the inhomogeneity of the local interstellar medium
The IBEX ribbon as a signature of the inhomogeneity of the local interstellar medium
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IBEX 带作为局部星际介质不均匀性的标志
DOI:
10.1051/0004-6361/201322064
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发表时间:
2014
影响因子:
6.5
通讯作者:
David J.
中科院分区:
文献类型:
--
作者:
H. Fichtner;K. Scherer;F. Effenberger;J. Zønnchen;N. Schwadron;D. J. McComas;David J.
ContextA new hypothesis is offered to explain the so-called ribbon feature appearing in the all-sky flux maps of energetic neutral atoms presently observed with the IBEX spacecraft, namely that the ribbon is a consequence of inhomogeneities in the local interstellar medium.AimsThe study aims at a detailed presentation of this hypothesis and its implications for the interpretation of ENA measurements with IBEX.MethodsTheoretical considerations regarding three different topics, namely IBEX measurements related to high-energy neutral atoms, Lyman-αobservations (made with the Voyager 1 spacecraft) related to low-energy neutral atoms, and astronomical data related to the structure of the interstellar medium, are critically discussed in order to corroborate the hypothesis.ResultsIt is found that inhomogeneities in the local interstellar medium can explain not only the IBEX ribbon and outer heliospheric Lyman-αobservations, but can also account for the interstellar Lyman-αabsorption that could only with difficulty be fully attributed to the hydrogen wall in the outer heliosheath if the heliospheric bow shock would indeed be absent.ConclusionsThe IBEX observations of the ribbon provide a unique opportunity to learn more about the nature of the interstellar medium surrounding the heliosphere.
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DOI:
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发表时间:
2013
期刊:
影响因子:
--
作者:
G. Zank;J. Heerikhuisen;Brian E. Wood;N. Pogorelov;E. Zirnstein;D. McComas
通讯作者:
D. McComas
DOI:
10.1086/510844
发表时间:
2006
期刊:
The Astrophysical Journal
影响因子:
--
作者:
B. Wood;V. Izmodenov;J. Linsky;Y. Malama
通讯作者:
Y. Malama
DOI:
10.1088/0004-637x/742/2/104
发表时间:
2011
期刊:
The Astrophysical Journal
影响因子:
--
作者:
N. Pogorelov;J. Heerikhuisen;G. Zank;S. Borovikov;P. Frisch;D. McComas
通讯作者:
D. McComas
DOI:
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发表时间:
2008
期刊:
影响因子:
--
作者:
M. Bzowski
通讯作者:
M. Bzowski
DOI:
10.1088/0004-637x/724/2/1473
发表时间:
2010
期刊:
The Astrophysical Journal
影响因子:
--
作者:
P. Frisch;B. Andersson;A. Berdyugin;H. Funsten;A. M. Magalhães;D. McComas;V. Piirola;N. Schwadron;J. Slavin;S. Wiktorowicz
通讯作者:
S. Wiktorowicz