6 papers · 1 filter
Masses of Black Holes in Active Galactic Nuclei
Bradley M. Peterson
We present a progress report on a project whose goal is to improve both the precision and accuracy of everberation-based black-hole masses. Reverberation masses appear to be accura…
The Structure and Energetics of Active Galactic Nuclei
Bradley M. Peterson
The black-hole/accretion-disk paradigm for active galactic nuclei (AGNs) is now reasonably secure, but there are still important unresolved issues, some of which will require the c…
Observational Requirements for High-Fidelity Reverberation Mapping
Keith Horne, Bradley M. Peterson, Stefan J. Collier +1
We present a series of simulations to demonstrate that high-fidelity velocity-delay maps of the emission-line regions in active galactic nuclei can be obtained from time-resolved s…
Does the AGN Continuum Shape Change with Luminosity?
P. Romano, B. M. Peterson
We test the general wisdom that AGN continua vary with larger amplitude at shorter wavelengths, through a re-analysis of historical data from the optical and UV (IUE) monitoring ca…
Gravitational Microlensing Results from MACHO
The MACHO Collaboration, W. Sutherland, C. Alcock +17
The MACHO project is searching for dark matter in the form of massive compact halo objects (Machos), by monitoring the brightness of millions of stars in the Magellanic Clouds to s…
Results from Monitoring the Broad-Line Radio Galaxy 3C 390.3
K. M. Leighly, M. Dietrich, E. Waltman +6
During 1995, the broad-line radio galaxy 3C 390.3 is the subject of a multi-wavelength monitoring campaign comprised of ROSAT HRI, IUE, and ground based optical, infrared and radio…