7 papers
Extragalactic Proper Motions: Gravitational Waves and Cosmology
Jeremy Darling, Alexandra Truebenbach, Jennie Paine
Extragalactic proper motions can reveal a variety of cosmological and local phenomena over a range of angular scales. These include observer-induced proper motions, such as the sec…
Toward a Measurement of the Transverse Peculiar Velocity of Galaxy Pairs
Alexandra Truebenbach, Jeremy Darling
The transverse peculiar velocities caused by the mass distribution of large-scale structure provide a test of the theoretical matter power spectrum and the cosmological parameters…
All Transverse Motion is Peculiar: Connecting the Proper Motions of Galaxies to the Matter Power Spectrum
Jeremy Darling, Alexandra E. Truebenbach
In an isotropic and homogeneous Hubble expansion, all transverse motion is peculiar. Like the radial peculiar velocities of galaxies, transverse peculiar velocities are a means to…
Extragalactic Proper Motions: Gravitational Waves and Cosmology
Jeremy Darling, Alexandra Truebenbach, Jennie Paine
Extragalactic proper motions can reveal a variety of cosmological and local phenomena over a range of angular scales. These include observer-induced proper motions, such as the sec…
The Gaia-WISE Extragalactic Astrometric Catalog
Jennie Paine, Jeremy Darling, Alexandra Truebenbach
The Gaia mission has detected a large number of active galactic nuclei (AGN) and galaxies, but these objects must be identified among the 1000-fold more numerous stars. Extant astr…
Astrometric Limits on the Stochastic Gravitational Wave Background
Jeremy Darling, Alexandra E. Truebenbach, Jennie Paine
The canonical methods for gravitational wave detection are ground- and space-based laser interferometry, pulsar timing, and polarization of the cosmic microwave background. But as…