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researcher

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 astro-ph.HEShow all

2 papers · 1 filter

astro-ph.HE2016★ 13 cited

Chandra Reveals Heavy Obscuration and Circumnuclear Star Formation in Seyfert 2 Galaxy NGC 4968

Stephanie M. LaMassa, Tahir Yaqoob, N. A. Levenson +6

We present the Chandra imaging and spectral analysis of NGC 4968, a nearby (z = 0.00986) Seyfert 2 galaxy. We discover extended (∼1 kpc) X-ray emission in the soft band (0.5 -…

astro-ph.HE2012★ 21 cited

Decoupling absorption and continuum variability in the Seyfert 2 NGC 4507

V. Braito, L. Ballo, J. N. Reeves +3

We present the results of the Suzaku observation of the Seyfert 2 galaxy NGC 4507. This source is one of the X-ray brightest Compton-thin Seyfert 2s and a candidate for a variable…

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