Testing inverse Compton heating in high-z galaxies

Details Testing inverse Compton heating in high-z galaxies Testing inverse Compton heating in high-z galaxies

Sep 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010cxo..prop.3032s&link_type=abstract

Chandra proposal ID #12900191

Computer Science

Scientific paper

Galaxy formation models require feedback to quench star formation in massive galaxies at high-z. Inverse Compton (IC) scattering by relativistic electrons in radio jets off the CMB or FIR photons from starbursts within the galaxies is one potential mechanism. Our Chandra observations of two radio galaxies at z=3.8 provide strong evidence for IC scattering and here we request time for 100-ks observations of two FIR-faint z=3.6 radio galaxies to determine the ubiquity of IC halos around massive galaxies and to distinguish between the CMB and starbursts as the origin of the seed photon field. These observations will test whether IC heating is an important mechanism for limiting the growth of the most massive galaxies at high z and determine its origin, necessary to understand its evolution.

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