Probing for multi-TeV particle acceleration towards W28-A2, a highly unusual ultra-compact HII region.

Details Probing for multi-TeV particle acceleration towards W28-A2, a highly unusual ultra-compact HII region. Probing for multi-TeV particle acceleration towards W28-A2, a highly unusual ultra-compact HII region.

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cxo..prop.2769r&link_type=abstract

Chandra proposal ID #11200317

Computer Science

Scientific paper

The TeV gamma-ray sources in the field of the supernova remnant W28 present a unique opportunity to probe for a new type of multi-TeV particle accelerator - HII regions. Our proposal will observe the TeV source HESSJ1800-240B which is potentially linked to the highly unusual ultra-compact HII region W28A2. Our earlier XMM-Newton observations (badly affected by stray light) reveal point sources towards this region. With Chandra, we can study these X-ray sources in greater detail, and potentially resolve the arc-second scale ionisation ring and molecular outflows. These observations will provide new insight into the potential of very early stages of massive star formation to accelerate multi-TeV particles.

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