Starburst-Nucleus Outflow Cones: Understanding the Origin of X-Ray Emission in Galactic Superwinds

Details Starburst-Nucleus Outflow Cones: Understanding the Origin of X-Ray Emission in Galactic Superwinds Starburst-Nucleus Outflow Cones: Understanding the Origin of X-Ray Emission in Galactic Superwinds

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..640s&link_type=abstract

Chandra Proposal ID #02600564

Physics

Chandra Proposal Id #02600564

Scientific paper

Indirect evidence strongly suggests that starburst-driven outflows (Superwinds) are responsible for much of the enrichment and heating of the IGM. X-ray observations of local superwinds provide a direct way of measuring this process in action, provided these observations probe the energetic metal-enriched wind-fluid driving the outflow. Our AO1 Chandra observation of the local starburst NGC 253 shows instead the X-ray emission arises in shocked ambient ISM (not the wind), but with only one example we can not draw general conclusions. Only Chandra has the spatial resolution necessary to solve this problem. We propose Chandra observations of several nearby bright starbursts, to build a sample large enough to definitively resolve the origin of the X-ray emission in superwinds.

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