8th HEAD Meeting, 8-11 September, 2004
Session 4 Jets and Blazars
Poster, Wednesday, September 8, 2004, 9:00am-10:00pm

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[4.15] An X-ray View of WLRGs/LINERs

A. S. Rinn, R. M. Sambruna, M. Gliozzi (George Mason University, Dept. of Physics and Astronomy)

Recent studies of stellar dynamics have established that supermassive black holes are ubiquitous not only in Active Galactic Nuclei (AGN), but among ``normal'' galaxies as well. The role played by low-power AGN is therefore of crucial importance, as such objects may represent the link between powerful AGN and ``normal'' galaxies. We analyzed Chandra and XMM-Newton data for nine Weak-Line Radio Galaxies (WLRGs). The objects are all classified in the optical as either Low-Ionization Nuclear Emission-line Regions (LINERs) or possible LINERs, and in the radio as FRI or FRI/FRII transition objects with the exception of one FRII. Different powering mechanisms may coexist to produce LINERs. Here we concentrate on WLRGs where the presence of an AGN is established in the radio. The analysis of this sample of WLRGs consisted of: i) an investigation into the origin of the nuclear X-rays (jet vs. accretion related emission); ii) an assessment of the nature of accretion in low-power objects; iii) a comparison of the X-ray properties of the core and circumnuclear environment with a larger population of radio galaxies from the literature. This analysis has been undertaken with the ultimate goal of shedding light on the relationship between powerful AGN and ``normal'' galaxies. Financial support from Smithsonian grant GO3-4123A (ASR), and NASA LTSA grant NAG5-10708 (RMS, MG) is gratefully acknowledged.

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Bulletin of the American Astronomical Society, 36 #3
© 2004. The American Astronomical Soceity.