5 papers
Enhancing the Detection Sensitivity of Primordial Parity Violation using Galaxy Spins
Byoungjo Yu, Junsup Shim, Hyunmi Song
It has been recently demonstrated that the signature of primordial parity violation could be imprinted in halo spins, indicating its potential detectability through the late-time g…
Which filaments matter: the relative scalings of anisotropic infall
Junsup Shim, Dmitri Pogosyan, Myoungwon Jeon +1
Dark-matter haloes do not form in isolation but within the surrounding cosmic web. By the time a halo begins to collapse, its larger-scale environment has typically collapsed along…
Probing vector chirality in the early Universe
Junsup Shim, Ue-Li Pen, Hao-Ran Yu +1
We explore the potential of using late-time galaxy spins to test the parity symmetry of primordial vector fossils. Using -body simulations, we analyze halo spins as a reliable p…
Improving cosmological constraints via galaxy intrinsic alignment in full-shape analysis
Junsup Shim, Teppei Okumura, Atsushi Taruya
The intrinsic alignment (IA) of galaxy shapes probes the underlying gravitational tidal field, thus offering cosmological information complementary to galaxy clustering. In this pa…
Squeezing Full-Shape Dynamical Dark Energy Constraints with Galaxy Alignments
Junsup Shim, Teppei Okumura, Atsushi Taruya
Recent deviations from the Cosmological Constant suggest that dark energy (DE) may be dynamical, based on baryon acoustic oscillations and full-shape galaxy clustering…