5 papers
Constraints on the remote quadrupole field from the polarized Sunyaev Zel'dovich effect
Jordan Krywonos, Matthew C. Johnson, Elena Pierpaoli +1
The polarized Sunyaev Zel'dovich (pSZ) effect is a cosmic microwave background (CMB) polarization anisotropy induced by Thomson scattering from free-electrons in non-linear structu…
Measuring cosmic bulk flow with kinetic Sunyaev-Zel'dovich velocity reconstruction
Suroor Seher Gandhi, Matthew C. Johnson, Jordan Krywonos +1
Cosmic bulk flow--the volume-averaged peculiar velocity of matter--serves as a fundamental test of the Cosmological Principle when probed on gigaparsec (Gpc) scales. Historically,…
Reconstruction of Dark Matter and Baryon Density From Galaxies: A Comparison of Linear, Halo Model and Machine Learning-Based Methods
Jordan Krywonos, Yurii Kvasiuk, Matthew C. Johnson +1
For many analyses in cosmology it is necessary to reconstruct the likely distribution of unobserved fields, such as dark matter or non-luminous baryons, from observed luminous trac…
Reconstruction of Continuous Cosmological Fields from Discrete Tracers with Graph Neural Networks
Yurii Kvasiuk, Jordan Krywonos, Matthew C. Johnson +1
We develop a hybrid GNN-CNN architecture for the reconstruction of 3-dimensional continuous cosmological matter fields from discrete point clouds, provided by observed galaxy catal…
Improving Photometric Galaxy Clustering Constraints With Cross-Bin Correlations
Jordan Krywonos, Jessica Muir, Matthew C. Johnson
Clustering studies in current photometric galaxy surveys focus solely on auto-correlations, neglecting cross-correlations between redshift bins. We evaluate the potential advantage…