4 papers
Radio-Variability in Radio-Quiet Quasars and Low-Luminosity AGN
Heino Falcke, Joseph Lehar, Richard Barvainis +2
We report on two surveys of radio-weak AGN to look for radio variability. We find significant variability with an RMS of 10-20% on a timescale of months in radio-quiet and radio-in…
Molecular Emission Lines from High Redshift AGNs
Richard Barvainis
A brief overview is given of the current status of molecular emission line observations at high redshift. New observations are presented of CO in the gravitationally lensed quasar…
Molecular Gas in Quasar Hosts
Richard Barvainis
The study of molecular gas in quasar host galaxies addresses a number of interesting questions pertaining to the hosts' ISM, to unified schemes relating quasars and IR galaxies, an…
The Quadruple Gravitational Lens PG1115+080: Time Delays and Models
P. L. Schechter, C. D. Bailyn, R. Barr +24
Optical photometry is presented for the quadruple gravitational lens PG1115+080. A preliminary reduction of data taken from November 1995 to June 1996 gives component ``C'' leading…