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J. Allen

14 papers hereh-index 14917 citations20 works total

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

author position
  • first author3
  • middle author8
  • last author2

Across the 13 of 14 papers where every author was matched, so the position is known.

fields
  • astro-ph.GA9
  • astro-ph.CO4
  • astro-ph1
same name
  • J. Allen — 118 papers, h 16
  • J. Allen — 49 papers, h 6
  • J. Allen — 39 papers, h 44
  • J. Allen — 33 papers, h 41
  • J. Allen — 20 papers, h 20
  • J. Allen — 14 papers

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
20082016
most citedA strong redshift dependence of the broad absorption line quasar fraction

231 citations · 770 across the 13 of their papers we have counts for

collaborators
Showing 2008Show all

1 paper · 1 filter

astro-ph2008★ 1 cited

Finding SDSS BALQSOs Using Non-Negative Matrix Factorisation

James T. Allen, Paul C. Hewett, Vasily Belokurov +1

Modern spectroscopic databases provide a wealth of information about the physical processes and environments associated with astrophysical populations. Techniques such as blind sou…

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