Relativistic blue- and red-shifted absorption lines in AGNs

Details Relativistic blue- and red-shifted absorption lines in AGNs Relativistic blue- and red-shifted absorption lines in AGNs

2006-10-04

arxiv.org/abs/astro-ph/0610117v1

Astron.Nachr. 88 (2006) 1-8

Astronomy and Astrophysics

Astrophysics

8 pages and 9 figures, to appear in Astronomical Notes (Astron. Nachr.), issue number 2006/10

Scientific paper

10.1002/asna.200610639

Current, accumulating evidence for (mildly) relativistic blue- and red-shifted absorption lines in AGNs is reviewed. XMM-Newton and Chandra sensitive X-ray observations are starting to probe not only the kinematics (velocity) but also the dynamics (accelerations) of highly ionized gas flowing in-and-out from, likely, a few gravitational radii from the black hole. It is thus emphasized that X-ray absorption-line spectroscopy provides new potential to map the accretion flows near black holes, to probe the launching regions of relativistic jets/outflows, and to quantify the cosmological feedback of AGNs. Prospects to tackle these issues with future high energy missions are briefly addressed.

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