Resolving the time-evolution of the HH 154 X-ray emission

Details Resolving the time-evolution of the HH 154 X-ray emission Resolving the time-evolution of the HH 154 X-ray emission

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cxo..prop.2778s&link_type=abstract

Chandra proposal ID #11200621

Physics

Scientific paper

We propose to add to the available two Chandra images of HH 154 a new ACIS-S pointing of 70 ks to obtain a time-series with a baseline of nine years. The available data suggests two different X-ray emission components close to the heavily obscured driving source; one of these X-ray components might be associated with a knot in the HH-object while the nature of the seemingly stationary and more luminous component is still unclear. We want to clarify the structure of the X-ray emitting volume(s) to understand the physics of stellar outflows (e.g. collimation) and their interaction with the ambient medium (e.g. the role of turbulence). The new observation has the potential to solve pressing problems related to the production of X-rays within Herbig-Haro objects.

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