Jet emission in NGC 1052 at radio, optical, and X-ray frequencies

被引：47

作者：

Kadler, M

Kerp, J

Ros, E

Falcke, H

Pogge, RW

Zensus, JA

机构：

[1] Max Planck Inst Radioastron, D-53121 Bonn, Germany

[2] Univ Bonn, Inst Radioastron, D-53121 Bonn, Germany

[3] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA

来源：

ASTRONOMY & ASTROPHYSICS | 2004年 / 420卷 / 02期

关键词：

galaxies : individual : NGC 1052; galaxies : individual : B 0238-084; galaxies : active; galaxies : jets;

D O I：

10.1051/0004-6361:20034126

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a combined radio, optical, and X-ray study of the nearby LINER galaxy NGC 1052. Data from a short (2.3 ks) 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-H = (0.6-0.8) x 10(22) cm(-2). We compare the radio structure to an optical "structure map" from a Hubble Space Telescope (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.

引用

页码：467 / 474

页数：8

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