activity
20232026
most citedPlanetary Complexity Revealed by the Joint Differential Entropy of Eigencolours

4 citations · 5 across the 13 of their papers we have counts for

collaborators

13 papers

astro-ph.IM2026

3.5-meter Segmented-Mirror Robotic Space Telescope Mission White Paper I. Overall Architecture and Scientific Mission

Yong-Woo Kang, Sang Hyun Lee, Juhan Kim +22

We present the preliminary science concept and mission architecture of a 3.5-meter segmented-mirror robotic space telescope currently under study. The observatory is conceived as a…

astro-ph.IM2026

3.5-meter Segmented-Mirror Robotic Space Telescope Mission White Paper V. Key Scientific Mission: Compact-Object Time-Domain Science

Juhan Kim, Yong-Woo Kang, Sang Hyun Lee +22

An isolated compact object retains the point-source resolving power of the space-based slitless spectrograph. The baseline wavelength range is 0.2--1.5 m. The planning baseline…

astro-ph.IM2026

3.5-meter Segmented-Mirror Robotic Space Telescope Mission White Paper IV. Key Scientific Mission: Solar-System Small Bodies and Planetary Defense

Juhan Kim, Yong-Woo Kang, Sang Hyun Lee +22

The baseline 0.2--1.5 m observatory provides rapid-response astrometry, visible and near-infrared taxonomy, rotation and phase curves, recovery, and long-arc orbit improvement f…

astro-ph.IM2026

3.5-meter Segmented-Mirror Robotic Space Telescope Mission White Paper III. Key Scientific Mission: Exoplanet Science with a Coronagraph

Juhan Kim, Sang Hyun Lee, Yong-Woo Kang +22

This volume defines the exoplanet science program enabled by the dedicated high-contrast coronagraph in the baseline science payload of the 3.5-meter Segmented-Mirror Robotic Space…

astro-ph.IM2026

3.5-meter Segmented-Mirror Robotic Space Telescope Mission White Paper II. Key Scientific Mission: Wide-Field Cosmology and Galaxy Evolution

Juhan Kim, Yong-Woo Kang, Sang Hyun Lee +22

The 3.5-meter Segmented-Mirror Robotic Space Telescope uses an image slicer for all spectroscopic observations. The planning baseline uses for the wide survey and r…

astro-ph.CO2026

A refined method for measuring cosmological distances using variability and proper motions in AGN with VLBI-detected counter-jets

Jeffrey A. Hodgson, Anthony Carr, David Parkinson +6

In a previous paper, we described a `standard speed-gun' (SSG) distance that uses the speed of light to standardize a ruler under the assumption that the radio variability seen in…

astro-ph.CO2026

Cosmology from Nx2pt Analyses of SKAO Wide-Area Surveys

Ian Harrison, Ziad Sakr, Giulia Piccirilli +7

SKAO surveys will provide an unprecedented window into the large-scale structure of the universe through HI 21cm galaxy and intensity mapping surveys, and radio continuum surveys.…

astro-ph.CO2026

Cosmology from Clustering of Continuum Galaxies

Jacobo Asorey, Catherine L. Hale, Sebastian von Hausegger +6

The distribution of radio continuum galaxies is a useful, fast, and accessible probe of the matter distribution in the Universe, enlightening us about the Universe's initial condit…

astro-ph.CO2025

EMU: Cross-correlating EMU Pilot Survey 1 with Dark Energy Survey to validate the radio galaxy bias and redshift distribution

Chandra Shekhar Saraf, David Parkinson, Jacobo Asorey +6

Radio continuum galaxy surveys can provide a relatively fast map of the projected distribution of structure in the Universe, at the cost of lacking information about the radial dis…

astro-ph.CO2024

Primordial non-Gaussianity systematics from redshift mismatch with SPHEREx

Chandra Shekhar Saraf, David Parkinson

The ability to differentiate between different models of inflation through the imprint of primordial non-Gaussianity (PNG) requires stringent constraints on the local PNG parameter…

astro-ph.CO2024

The Redshift-Space Momentum Power Spectrum III: measuring the growth rate from the SDSSv survey using auto- and cross- power spectrum of the galaxy density and momentum fields

Fei Qin, Cullan Howlett, David Parkinson

The large-scale structure of the Universe and its evolution over time contains an abundance of cosmological information. One way to unlock this is by measuring the density and mome…

astro-ph.CO2024★ 1 cited

Cross-correlating the EMU Pilot Survey 1 with CMB lensing: Constraints on cosmology and galaxy bias with harmonic-space power spectra

K. Tanidis, J. Asorey, C. S. Saraf +8

We measured the harmonic-space power spectrum of galaxy clustering auto-correlation from the Evolutionary Map of the Universe Pilot Survey 1 data (EMU PS1) and its cross-correlatio…

astro-ph.EP2023★ 4 cited

Planetary Complexity Revealed by the Joint Differential Entropy of Eigencolours

Gary Segal, David Parkinson, Stuart Bartlett

We propose a measure, the joint differential entropy of eigencolours, for determining the spatial complexity of exoplanets using only spatially unresolved light curve data. The mea…