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researcher

U. Pen

274 papers hereh-index 6920.7k citations363 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • sole author17
  • first author20
  • middle author123
  • last author76

Across the 236 of 274 papers where every author was matched, so the position is known.

fields
  • astro-ph93
  • astro-ph.CO71
  • astro-ph.HE57
  • astro-ph.IM29
  • astro-ph.GA12
  • gr-qc7
same name
  • U. Pen — 20 papers, h 13
  • U. Pen — 1 paper

Either other researchers who publish under this name, or the same person where the external sources have not merged their records.

identity via Semantic Scholar / OpenAlex

activity
19932026
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations · 24.6k across the 271 of their papers we have counts for

collaborators
Showing 1996 · astro-phShow all

3 papers · 2 filters

astro-ph1996★ 134 cited

Cosmology in a String-Dominated Universe

David Spergel, Ue-Li Pen

The string-dominated universe locally resembles an open universe, and fits dynamical measures of power spectra, cluster abundances, redshift distortions, lensing constraints, lumin…

astro-ph1996★ 107 cited

The Universal Deceleration and Angular Diameter Distances to Clusters of Galaxies

Ue-Li Pen

We show how the virial theorem can be applied to the hot gas in clusters of galaxies to obtain a yardstick, which could then be used to determine cosmological parameters. This yard…

astro-ph1996★ 95 cited

Normalizing the Temperature Function of Clusters of Galaxies

Ue-Li Pen

We re-examine the constraints which can be robustly obtained from the observed temperature function of X-ray cluster of galaxies. The cluster mass function has been thoroughly stud…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.