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researcher

A. Ullan

10 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 author3

Across the 7 of 10 papers where every author was matched, so the position is known.

fields
  • astro-ph9
  • astro-ph.GA1
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
20022009
most citedThe XMM-Newton Serendipitous Survey V. Optical identification of the XMM-Newton Medium sensitivity Survey (XMS)

89 citations · 255 across the 10 of their papers we have counts for

collaborators
Showing 2009 · astro-ph.GAShow all

1 paper · 2 filters

astro-ph.GA2009★ 15 cited

Microlensing variability in FBQ 0951+2635: short-timescale events or a long-timescale fluctuation?

V. N. Shalyapin, L. J. Goicoechea, E. Koptelova +7

We present and analyse new R-band frames of the gravitationally lensed double quasar FBQ 0951+2635. These images were obtained with the 1.5m AZT-22 Telescope at Maidanak (Uzbekista…

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