Examining the Core of Centaurus A using X-ray Polarimetry

Details Examining the Core of Centaurus A using X-ray Polarimetry Examining the Core of Centaurus A using X-ray Polarimetry

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011head...12.1901m&link_type=abstract

American Astronomical Society, HEAD meeting #12, #19.01

Astronomy and Astrophysics

Astronomy

Scientific paper

At 3.4 Mpc, Centaurus A is the nearest example of an active galaxy with strong radio emission from the core, jet, and lobes. The host galaxy, NGC5128, is a giant elliptical containing a kpc-scale dust lane which obscures the center. Chandra images show that all of these structures emit X-rays and that the total is dominated by the bright core. We show that observations with the upcoming NASA mission, the Gravitation and Extreme Magnetism SMEX (GEMS), will test models of the origin of X-ray emission from the core. On milli-arcsecond scales, as observed using VLBI networks, the pc-scale jet dominates. By measuring the polarization of the core X-rays, GEMS will be able to examine the structure of this small scale jet, unresolved by Chandra.

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