Low-Luminosity Radio Loud AGN in Nearby Ellipticals with Dynamical Nuclear Mbhs

Physics

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Chandra Proposal Id #02700669

Scientific paper

We propose to obtain ACIS-S back-illuminated observations of IC 1459 (60 ks) and NGC 4552 (80 ks). These two nearby giant ellipticals have little hot halo X-ray emission, massive (a few 10**8 Msol) nuclear black holes (MBH), and radio-loud AGNs with peculiarly weak optical/UV and hard X-ray emission. Chandra observations will cleanly separate the nuclear X-ray source from the surrounding emission, and discriminate between ADAF, obscuration, and `mini-BL~Lac' models for the low-luminosity AGN. We will perform X-ray imaging spectroscopy of the ENLRs, and compare them with the ENLRs of Seyferts; determine the physical parameters of the hot ISM and explore MBH - ISM interaction.

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