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Cosmology with Equivalence Principle Breaking in the Dark Sector
Jose Ariel Keselman, Adi Nusser, P. J. E. Peebles
A long-range force acting only between nonbaryonic particles would be associated with a large violation of the weak equivalence principle. We explore cosmological consequences of t…
Phenomenology of the Invisible Universe
P. J. E. Peebles
Cosmology is operating now on a well established and tightly constraining empirical basis. The relativistic LambdaCDM hot big bang theory is consistent with all the present tests;…
Lessons from Windows on the Universe
P. J. E. Peebles
I know better than to come between the experts here assembled and their research programs, so I confine these remarks to lessons to be drawn on the state of our subject from the hi…
Only the Lonely: HI Imaging of Void Galaxies
K. Stanonik, E. Platen, M. A. Aragon-Calvo +6
We have completed a pilot survey imaging 15 SDSS selected void galaxies in HI in local (d=50 to 100 Mpc) voids. This small sample makes up a surprisingly interesting collection of…
Tracing the Magellanic Clouds Back in Time
P. J. E. Peebles
A solution is presented for the past motions of the Magellanic Clouds, the Milky Way galaxy, and M31, fitted to the measured velocities of the Clouds and M31, under some simplifyin…
Polar disk galaxy found in wall between voids
K. Stanonik, E. Platen, M. A. Aragón-Calvo +4
We have found an isolated polar disk galaxy in what appears to be a cosmological wall situated between two voids. This void galaxy is unique as its polar disk was discovered serend…