activity
20012025
most citedThe Assembly of Galaxy Clusters

158 citations · 780 across the 16 of their papers we have counts for

collaborators

16 papers

gr-qc2025★ 1 cited

Gravitational Wave Peep Contributions to Background Signal Confusion Noise for LISA

Daniel J Oliver, Aaron D Johnson, Lena Janssen +3

Two-body gravitational interactions will occasionally lead to a stellar-mass compact object entering a very highly eccentric orbit around a massive black hole at the center of a ga…

gr-qc2023★ 8 cited

Gravitational Wave Peeps from EMRIs and their Implication for LISA Signal Confusion Noise

Daniel J Oliver, Aaron D Johnson, Joel Berrier +2

Scattering events around the center of massive galaxies will occasionally toss a stellar-mass compact object into an orbit around the massive black hole at the center, beginning an…

astro-ph.GA2017★ 30 cited

The Illustris Simulation: Supermassive Black Hole - Galaxy Connection Beyond the Bulge

Burçin Mutlu-Pakdil, Marc S. Seigar, Ian B. Hewitt +3

We study the spiral arm morphology of a sample of the local spiral galaxies in the Illustris simulation and explore the supermassive black hole - galaxy connection beyond the bulge…

astro-ph.GA2015★ 35 cited

A Fundamental Plane of Spiral Structure in Disk Galaxies

Benjamin L. Davis, Daniel Kennefick, Julia Kennefick +7

Spiral structure is the most distinctive feature of disk galaxies and yet debate persists about which theory of spiral structure is the correct one. Many versions of the density wa…

astro-ph.GA2014★ 18 cited

Smoothing Rotation Curves and Mass Profiles

Joel C. Berrier, J. A. Sellwood

We show that spiral activity can erase pronounced features in disk galaxy rotation curves. We present simulations of growing disks, in which the added material has a physically mot…

astro-ph.GA2014★ 22 cited

Constraining dark matter halo profiles and galaxy formation models using spiral arm morphology. II. Dark and stellar mass concentrations for 13 nearby face-on galaxies

Marc S. Seigar, Benjamin L. Davis, Joel Berrier +1

We investigate the use of spiral arm pitch angles as a probe of disk galaxy mass profiles. We confirm our previous result that spiral arm pitch angles (P) are well correlated with…

astro-ph.GA2014★ 59 cited

The Black Hole Mass Function Derived from Local Spiral Galaxies

Benjamin L. Davis, Joel C. Berrier, Lucas Johns +6

We present our determination of the nuclear supermassive black hole (SMBH) mass function for spiral galaxies in the Local Universe, established from a volume-limited sample consist…

astro-ph.GA2013★ 60 cited

Further Evidence for a Supermassive Black Hole Mass - Pitch Angle Relation

Joel C. Berrier, Benjamin L. Davis, Daniel Kennefick +7

We present new and stronger evidence for a previously reported relationship between galactic spiral arm pitch angle P (a measure of the tightness of spiral structure) and the mass…

astro-ph.CO2013★ 45 cited

Identification of Outflows and Candidate Dual Active Galactic Nuclei in SDSS Quasars at z=0.8-1.6

R. Scott Barrows, Claud H. Sandberg Lacy, Julia Kennefick +3

We present a sample of 131 quasars from the Sloan Digital Sky Survey at redshifts 0.8<z<1.6 with double peaks in either of the high-ionization narrow emission lines [NeV]3426 or [N…

astro-ph.CO2012★ 8 cited

Close Galaxy Pairs at z = 3: A Challenge to UV Luminosity Abundance Matching

Joel C. Berrier, Jeff Cooke

We use a sample of z~3 Lyman Break Galaxies (LBGs) to examine close pair clustering statistics in comparison to LCDM-based models of structure formation. Samples are selected by ma…

astro-ph.GA2012★ 104 cited

Measurement of Galactic Logarithmic Spiral Arm Pitch Angle Using Two-Dimensional Fast Fourier Transform Decomposition

Benjamin L. Davis, Joel C. Berrier, Douglas W. Shields +5

A logarithmic spiral is a prominent feature appearing in a majority of observed galaxies. This feature has long been associated with the traditional Hubble classification scheme, b…

astro-ph.CO2010★ 18 cited

Counts-in-Cylinders in the Sloan Digital Sky Survey with Comparisons to N-body Simulations

Heather D. Berrier, Elizabeth J. Barton, Joel C. Berrier +3

Environmental statistics provide a necessary means of comparing the properties of galaxies in different environments and a vital test of models of galaxy formation within the preva…

astro-ph.CO2009★ 33 cited

Lyman break galaxy close and interacting pairs at z ~ 3

Jeff Cooke, Joel C. Berrier, Elizabeth J. Barton +2

To date, the identification of interactions at z ~ 3 and above has relied on morphological analysis. Here, we present five serendipitous spectroscopic z ~ 3 Lyman break galaxy (LBG…

astro-ph2008★ 158 cited

The Assembly of Galaxy Clusters

Joel C. Berrier, Kyle R. Stewart, James S. Bullock +3

We study the formation of fifty-three galaxy cluster-size dark matter halos formed within a pair of cosmological LCDM N-body simulations, and track the accretion histories of clust…

astro-ph2006★ 92 cited

Close Galaxy Counts as a Probe of Hierarchical Structure Formation

Joel C. Berrier, James S. Bullock, Elizabeth J. Barton +3

Standard LCDM predicts that the major merger rate of galaxy-size dark matter halos rises rapidly with redshift. The average number of close companions per galaxy, Nc, is often used…

astro-ph2001★ 89 cited

Galactic populations of radio and gamma-ray pulsars in the polar cap model

Peter L. Gonthier, Michelle S. Ouellette, Joel Berrier +2

We simulate the characteristics of the Galactic population of radio and -ray pulsars using Monte Carlo techniques. At birth, neutron stars are spatially distributed in the Galac…