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researcher

A. Ullan

9 papers hereh-index 10452 citations35 works total

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

author position
  • first author1
  • middle author3
  • last author2

Across the 6 of 9 papers where every author was matched, so the position is known.

fields
  • astro-ph9
same name
  • A. Ullan — 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
20022008
most citedThe XMM-Newton Serendipitous Survey V. Optical identification of the XMM-Newton Medium sensitivity Survey (XMS)

89 citations · 163 across the 5 of their papers we have counts for

collaborators
Showing 2002Show all

1 paper · 1 filter

astro-ph2002

Around the Clock Observations of the Q0957+561 A,B Gravitationally Lensed Quasar II: Results for the second observing season

Wesley N. Colley, Rudolph E. Schild, Cristina Abajas +35

We report on an observing campaign in March 2001 to monitor the brightness of the later arriving Q0957+561 B image in order to compare with the previously published brightness obse…

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