Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-03-08
Astron.Astrophys. 420 (2004) 467-474
Astronomy and Astrophysics
Astrophysics
8 pages, 5 figures (figure 2 in color), image resolution degraded wrt journal version, needs aa.cls. Accepted for publication
Scientific paper
10.1051/0004-6361:20034126
We present a combined radio, optical, and X-ray study of the nearby LINER galaxy NGC 1052. Data from a short (2.3 ksec) {\it CHANDRA} observation of NGC 1052 reveal the presence of various jet-related X-ray emitting regions, a bright compact core and unresolved knots in the jet structure as well as an extended emitting region inside the galaxy well aligned with the radio synchrotron jet-emission. The spectrum of the extended X-ray emission can best be fitted with a thermal model with $kT = (0.4-0.5)$ keV, while the compact core exhibits a very flat spectrum, best approximated by an absorbed power-law with $N_{\rm H} = (0.6-0.8) \times 10^{22} {\rm cm^{-2}}$. We compare the radio structure to an optical ``structure map'' from a {\it Hubble Space Telescope} ({\it HST}) observation and find a good positional correlation between the radio jet and the optical emission cone. Bright, compact knots in the jet structure are visible in all three frequency bands whose spectrum is inconsistent with synchrotron emission.
Falcke Heino
Kadler Matthias
Kerp Juergen
Pogge Richard W.
Ros Eduardo
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