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ROSAT observations of the Orion-Eridanus superbubbleThe Orion-Eridanus bubble is a superbubble created by the Orion OB1 stellar association. The X-ray emission from the interior of this bubble forms a prominent feature of the soft X-ray diffuse background extending across approximately 20 x 35 deg. The Rosat all sky survey maps of this object show various soft X-ray shadows cast by neutral foreground clouds against the bright emission of the superbubble interior. The velocities of some of these absorbing clouds were identified and distance limits were established, providing a 3D model of the bubble. The data are consistent with a model for the bubble in which the structure is formed by stellar winds and a recent supernova. Absorption features associated with the shell of the local bubble were identified which enable constraints to be placed on the distance and direction and to obtain measurement of the thermal pressure of the hot gas in this direction.
Document ID
19970024575
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Burrows, David N.
(Pennsylvania State Univ. University Park, PA United States)
Guo, Zhiyu
(Pennsylvania State Univ. University Park, PA United States)
Date Acquired
August 17, 2013
Publication Date
February 1, 1996
Subject Category
Astronomy
Accession Number
97N24332
Funding Number(s)
CONTRACT_GRANT: NAG5-1786
CONTRACT_GRANT: NAG5-2437
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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