The Spectral Energy Distributions of Low-luminosity AGNs

Details The Spectral Energy Distributions of Low-luminosity AGNs The Spectral Energy Distributions of Low-luminosity AGNs

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hst..prop10660h&link_type=abstract

HST Proposal ID #10660

Physics

Hst Proposal Id #10660 Agn/Quasars

Scientific paper

The spectral energy distributions {SEDs} of AGNs encode valuable information on the physics of accretion onto black holes. Until very recently, however, data on SEDs for low-luminosity AGNs {LINERs and nearby Seyferts} have been sorely lacking. Initial studies based on small samples indicate that the SEDs of low-luminosity AGNs exhibit profound differences compared to those of their more luminous counterparts such as classical Seyferts and quasars. The most noticeable trait is the weakness of the "big blue bump, " a feature normally attributed to thermal emission from a thin accretion disk. This unexpected but potentially very important result has led to suggestions that low-luminosity AGNs accrete via a fundamentally different mode, perhaps in a hot, radiatively inefficient flow. This proposition, if it can be confirmed, has important implications for our understanding of black hole accretion and for elucidating the physical properties of low-level nuclear activity, which is extremely common in nearby galaxies. We propose to significantly enlarge the current sample of SEDs for low-luminosity AGNs by combining existing high-resolution nuclear fluxes measured in the radio {VLA} and X-rays {Chandra} with new optical and near-infrared data points to be extracted from archival WFPC2, ACS, and NICMOS images. This project will increase the current sample of SEDs by more than an order of magnitude.

Affiliated with

Also associated with

No associations

Rating

The Spectral Energy Distributions of Low-luminosity AGNs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Spectral Energy Distributions of Low-luminosity AGNs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Spectral Energy Distributions of Low-luminosity AGNs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1250457