Scaling Relations
Empirical acceleration and mass–velocity relations across galaxies, groups, brightest cluster galaxies, and clusters.
Read the research ↗Yong Tian中文 Soon
Astrophysics · Gravitation · Cosmology
Exploring dark matter problemthrough scaling relations
I study how galaxies and galaxy clusters reveal the distribution of matter—connecting empirical regularities, gravitational lensing, and dynamics to test our understanding of gravity and dark matter.
Research Scholar · Department of Physics · National Central University, Taiwan
Lensing & Time Delay
Using strong lensing and light-travel-time effects to probe mass distributions and relativistic gravity.
Read the research ↗Scaling relations
A baryonic Faber–Jackson relation across galaxy systems
A systematic comparison of galaxy groups, elliptical galaxies, and dwarf galaxies across a broad dynamical range.
Read the representative paper ↗Cluster dynamics
A distinct acceleration relation at cluster scales
Mass and acceleration measurements for brightest cluster galaxies and galaxy clusters, extending scaling-relation tests beyond individual galaxies.
Read the representative paper ↗Lensing & time delay
Connecting lensing, time delay, and gravity
Lensing and time-delay calculations that keep observable constraints distinct from the theoretical framework used to interpret them.
Read the representative paper ↗The Baryonic Faber–Jackson Relation and Fundamental Plane of Galaxy Groups, Elliptical Galaxies, and Dwarf Galaxies
Y. Tian, F. Lelli, M. S. Pawlowski, S. McGaugh, Y. Duann, K.-H. Chae, E. Di Teodoro, K. Haubner, M. H. Kuo & C.-M. Ko
Astronomy & Astrophysics Letter 710, L39Probing the Nature of Gravity in the Low-acceleration Limit: Wide Binaries of Extreme Separations with Perspective Effects
Y. Yoon, Y. Tian & K.-H. Chae
The Astrophysical Journal 992, 102Gas Thermodynamics Meets Galaxy Kinematics: Joint Mass Measurements for eROSITA Galaxy Clusters
P. Li, A. Liu, M. Kluge, J. Comparat, Y. Tian et al.
Astronomy & Astrophysics 692, A253Examining the Shapiro Time Delay at Earth–Sun Saddle Point in Relativistic MONDian Gravity
Y. Tian, J. M. Nester, C.-M. Ko & Y. Duann
45th COSPAR Scientific AssemblyFor students
Curious about galaxies, gravity, or the dark matter problem?
I welcome conversations with students interested in learning how observations, dynamics, and careful inference can be brought together. Explore suitable backgrounds and how to get in touch.
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