activity
20182026
most citedOn the observability of individual Population III stars and their stellar-mass black hole accretion disks through cluster caustic transits

97 citations · 190 across the 16 of their papers we have counts for

collaborators
Showing 2025Show all

5 papers · 1 filter

astro-ph.CO2025

Lensed stars in galaxy-galaxy strong lensing -- a JWST prediction for the Cosmic Horseshoe

Sung Kei Li, Luke Weisenbach, Thomas E. Collett +10

We explore for the first time the possibility of detecting lensed star transients in galaxy-galaxy strong lensing systems upon repeated, deep imaging using the {\it James-Webb Spac…

astro-ph.CO2025★ 4 cited

Signatures of Fuzzy Dark Matter Inside Radial Critical Curves

J. M. Palencia, Paloma Morilla, Sung Kei Li +5

We investigate the strong gravitational lensing properties of fuzzy dark matter (FDM) halos, focusing on the magnification properties near radial critical curves (CCs). Using simul…

astro-ph.CO2025★ 1 cited

Transient star B/R ratio and star formation in lensed galaxies

Sung Kei Li, Jose M. Palencia, Jose M. Diego +8

The extreme magnification from galaxy clusters and microlenses therein allows the detection of individual, luminous stars in lensed galaxies as transient events, and hence provides…

astro-ph.CO2025★ 6 cited

Microlensing at Cosmological Distances: Event Rate Predictions in the Warhol Arc of MACS 0416

J. M. Palencia, J. M. Diego, L. Dai +13

Highly magnified stars ( 100) are now outinely identified as transient events at cosmological distances thanks to microlensing by intra-cluster stars near the critical curve…

astro-ph.CO2025

Constraining the z 1 Initial Mass Function with {\it HST} and {\it JWST} Lensed Stars in MACS J0416.1-2403

Sung Kei Li, Jose M. Diego, Ashish K. Meena +19

Our understanding of galaxy properties and evolution is contingent on knowing the initial mass function (IMF), and yet to date, the IMF is constrained only to local galaxies. Indiv…