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Observations and Theoretical Implications of the Large Separation Lensed Quasar SDSS J1004+4112
M. Oguri, N. Inada, C. R. Keeton +25
We study the recently discovered gravitational lens SDSS J1004+4112, the first quasar lensed by a cluster of galaxies. It consists of four images with a maximum separation of 14.62…
Characterizing Earth-like Planets with Terrestrial Planet Finder
S. Seager, E. B. Ford, E. L. Turner
For the first time in human history the possibility of detecting and studying Earth-like planets is on the horizon. Terrestrial Planet Finder (TPF), with a launch date in the 2015…
Optical monitoring of the gravitationally lensed quasar Q2237+0305 from APO between June 1995 and January 1998
R. W. Schmidt, T. Kundic, U. -L. Pen +12
We present a data set of images of the gravitationally lensed quasar Q2237+0305, that was obtained at the Apache Point Observatory (APO) between June 1995 and January 1998. Althoug…
Gravitational lensing in modified Newtonian dynamics
Daniel J. Mortlock, Edwin L. Turner
Modified Newtonian dynamics (MOND) is an alternative theory of gravity that aims to explain large-scale dynamics without recourse to any form of dark matter. However the theory is…
Empirical constraints on alternative gravity theories from gravitational lensing
Daniel J. Mortlock, Edwin L. Turner
If it is hypothesised that there is no dark matter then some alternative gravitational theory must take the place of general relativity (GR) on the largest scales. Dynamical measur…
Predicting caustic crossing high magnification events in Q2237+0305
J. S. B. Wyithe, E. L. Turner, R. L. Webster +1
The central regions of the gravitationally lensed quasar Q2237+0305 can be indirectly resolved on nano-arcsecond scales if viewed spectrophotometricly during a microlensing high ma…