2.3k citations
- University of KansasUS20 papers
- Centre National de la Recherche ScientifiqueFR8 papers
- Kavli Institute for Particle Astrophysics and CosmologyUS7 papers
- Goddard Space Flight CenterUS6 papers
- SLAC National Accelerator LaboratoryUS6 papers
- Stanford UniversityUS6 papers
- University of California, Santa CruzUS6 papers
- Columbia UniversityUS5 papers
- Institut de Recherche en Astrophysique et PlanétologieFR5 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR5 papers
- Laboratoire de Physique des deux infinis BordeauxFR5 papers
- National Academies of Sciences, Engineering, and MedicineUS5 papers
16 papers · 1 filter
The peculiar velocity correlation function of the Cosmicflows-4 catalog
Yuyu Wang, Hume A. Feldman, Richard Watkins +1
We present an analysis of the parallel peculiar velocity correlation function using data from the Cosmicflows-4 (CF4) survey. CF4 significantly extends the depth of the peculiar ve…
The Origins of the Bulk flow
Richard Watkins, Trajan Clark, Hume A. Feldman
We analyze the origin of the large-scale bulk flow using the CosmicFlows-4 (CF4) peculiar-velocity catalog. We decompose the observed motions into internal components, generated by…
Analyzing the Large-Scale Bulk Flow using CosmicFlows4: Increasing Tension with the Standard Cosmological Model
Richard Watkins, Trey Allen, Collin James Bradford +7
We present an estimate of the bulk flow in a volume of radii Mpc using the minimum variance (MV) method with data from the CosmicFlows-4 (CF4) catalog. The addition…
Improved Methods for Estimating Peculiar Velocity Correlation Functions Using Volume Weighting
Yuyu Wang, Sarah Peery, Hume A. Feldman +1
We present an improved method for calculating the parallel and perpendicular velocity correlation functions directly from peculiar velocity surveys using weighted maximum-likelihoo…
Peculiar Velocity Estimation from Kinetic SZ Effect using Deep Neural Networks
Yuyu Wang, Nesar Ramachandra, Edgar M. Salazar-Canizales +3
The Sunyaev-Zel'dolvich (SZ) effect is expected to be instrumental in measuring velocities of distant clusters in near future telescope surveys. We simplify the calculation of pecu…
Easily Interpretable Bulk Flows: Continuing Tension with the Standard Cosmological Model
Sarah Peery, Richard Watkins, Hume A. Feldman
We present an improved Minimal Variance (MV) method for using a radial peculiar velocity sample to estimate the average of the three-dimensional velocity field over a spherical vol…