The X-ray view of the ionization cone in NGC5252
Matteo Guainazzi (1), Stefano Bianchi (2), Massimo Cappi (3), Mauro, Dadina (3), Giuseppe Malaguti (3) ((1) European Space Astronomy Center of, ESA, Madrid, Spain; (2) Universita' di Roma Tre, Rome, Italy; (3) INAF-IASF,, Bologna, Italy)
TL;DR
This study uses Chandra X-ray observations to analyze the ionization cone in NGC 5252, revealing that the soft X-ray emission is primarily photoionized by the AGN, allowing reconstruction of the AGN's activity over the past 100,000 years.
Contribution
First detailed X-ray analysis of NGC 5252's ionization cone showing AGN photoionization effects on large scales.
Findings
X-ray emission coincides with ionized gas in the cone
Gas is photoionized by the AGN
Reconstructed AGN activity over 100,000 years
Abstract
We present the results of a Chandra soft X-ray observation of the spectacular ionization cone in the nearby Seyfert 2 galaxy NGC 5252. As almost invariably observed in obscured AGN, the soft X-ray emission exhibits a remarkable morphological concidence with the cone ionized gas as traced by HST O[III] images. Energy-resolved images and high-resolution spectroscopy suggest that the X-ray emitting gas is photoionized by the AGN, at least on scales as large as the innermost gas and stellar ring (<3 kpc). Assuming that the whole cone is photoionized by the AGN, we reconstruct the history of the active nucles in the last 100000 years.
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Taxonomy
TopicsAstronomical Observations and Instrumentation · Astrophysical Phenomena and Observations · Galaxies: Formation, Evolution, Phenomena