The superbubble interior may be quite irregular, containing high velocity filaments moving chaotically, as seen in the Vela-Puppis region. Other prominent superbubbles in the Milky Way are those surrounding the Cygnus OB1 association, the Aquila supershell, and the Monogem Ring. Several superbubbles, surround OB associations in the Large Magellanic Cloud; these include the N70 superbubble (shown here) and the N44 superbubble. In fact, most supernova remnants (SNRs) are likely to be found in superbubbles, but it may be difficult to identify the old ones individually because they have merged with other old SNRs. We can only be sure to see the young ones, which are still interacting with circumstellar gas expelled by their progenitors.
Related category INTERSTELLAR AND INTERPLANETARY MATTER
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