activity
20032026
most citedSmall-Scale Challenges to the CDM Paradigm

1.5k citations · 22.8k across the 209 of their papers we have counts for

collaborators

210 papers

astro-ph.GA2026

The Ashes of Supermassive Stars: Globular Cluster-like Aluminum Enhancement in Little Red Dots

V. Kokorev, J. Chisholm, R. P. Naidu +16

The relative abundances of elements in galaxies serve as fossil records of the physical conditions and processes by which they were forged. While the Big Bang produced only the lig…

astro-ph.GA2026

JWST Reveals a Candidate Supermassive Black Hole Binary at z=4.3 in the Brightest Sub-millimeter Galaxy in COSMOS-Web

Jed McKinney, Ansh Gupta, Julian B. Munoz +13

We present JWST/NIRSpec PRISM and G395M grating spectroscopy for AzTEC-1, a massive sub-mm bright galaxy at in the COSMOS extragalactic field. The PRISM spectrum reveals s…

astro-ph.GA2026

Early Supermassive Black Holes and Little Red Dots Require Free-Fall Growth

Junehyoung Jeon, Volker Bromm, Michael Boylan-Kolchin +1

Supermassive black holes/active galactic nuclei (SMBHs/AGN), forming only a few hundred million years after the Big Bang as observed with the James Webb Space Telescope (JWST), cha…

astro-ph.GA2026

Resolving galaxy formation in the early Universe with BonFIRE and CampFIRE

Jenna Samuel, Michael Boylan-Kolchin, Robert Feldmann +16

The abundance and rapid growth of galaxies at cosmic dawn revealed by the James Webb Space Telescope challenges models of galaxy formation, motivating new simulations to uncover th…

astro-ph.GA2026

From protogalaxy through thick and thin: Why did the Milky Way evolve in three kinematic phases?

Olti Myrtaj, James S. Bullock, Michael Boylan-Kolchin +9

APOGEE and Gaia data suggest the Milky Way's kinematic structure evolved through three distinct phases: a disordered protogalaxy, which ``spun up'' into a thick stellar disk, and t…

astro-ph.GA2026★ 2 cited

Little Red Dots as Globular Clusters in Formation

John Chisholm, Danielle A. Berg, Michael Boylan-Kolchin +7

Little Red Dots (LRDs), among the most enigmatic high-redshift discoveries by JWST, are commonly believed to be powered by accreting supermassive black holes. Here, we explore the…