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A. Ptak

14 papers hereh-index 10728 citations19 works total

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

author position
  • first author4
  • middle author6
  • last author4

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

fields
  • astro-ph10
  • astro-ph.GA2
  • astro-ph.HE2
same name
  • A. Ptak — 67 papers, h 30
  • A. Ptak — 28 papers, h 22
  • A. Ptak — 25 papers, h 17
  • A. Ptak — 10 papers, h 4
  • A. Ptak — 7 papers, h 29
  • A. Ptak — 6 papers, h 5

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
19982025
most citedXMM-Newton observation of the Lockman Hole; I. The X-ray Data

374 citations · 997 across the 14 of their papers we have counts for

collaborators
Showing 1999Show all

1 paper · 1 filter

astro-ph1999★ 79 cited

Hard X-ray Variability in M82: Evidence for a Nascent AGN?

A. Ptak, R. Griffiths

We report on the detection of hard (2-10 keV) X-ray variability in the starburst galaxy M82 over the course of 9 ASCA observations. Long-term variability occurred on a time scale o…

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