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researcher

U. Pen

172 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 author6
  • first author5
  • middle author82
  • last author44

Across the 137 of 172 papers where every author was matched, so the position is known.

fields
  • astro-ph47
  • astro-ph.HE47
  • astro-ph.CO39
  • astro-ph.IM25
  • astro-ph.GA8
  • gr-qc5
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
19982026
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 · 11.7k across the 88 of their papers we have counts for

collaborators
Showing 2001 · astro-phShow all

3 papers · 2 filters

astro-ph2001

The Thermal Sunyaev Zel'dovich effect : a powerful probe for missing baryons

P. J. Zhang, U. L. Pen

About 90% of baryons in the universe have thus far escaped direct observation. This is known as the {\it missing baryon problem}. The Sunyaev Zel'dovich effect (SZ effect) has the…

astro-ph2001

Detection of Galaxy Spin Alignments in the PSCz Shear Field

Jounghun Lee, Ue-Li Pen

We report the first direct observational evidence for alignment of galaxy spin axes with the local tidal shear field. We measure quantitatively the strength of this directional cor…

astro-ph2001

AMiBA: Array for Microwave Background Anisotropy

K. Y. Lo, T. H. Chiueh, R. N. Martin +4

As part of a 4-year Cosmology and Particle Astrophysics (CosPA) Research Excellence Initiative in Taiwan, AMiBA − a 19-element dual-channel 85-105 GHz interferometer array is bei…

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