Concepedia

A. Ptak

AP

107

Publications

19.5K

Citations

43

H-Index

1994

Active since

Affiliations

Goddard Space Flight Center(Current)

Johns Hopkins University

Center for Astrophysics Harvard & Smithsonian

California Institute of Technology

University of Crete

A. Ptak is an author at Goddard Space Flight Center specializing in engineering, physics, and photometry.

ORCID

Top concepts

Publications per year

1994–2025

106

Publications

107

Astropy: A community Python package for astronomy

Thomas Robitaille, Erik Tollerud, P. Greenfield et al. · Astronomy and Astrophysics · 2013 · 13.5K citations · Full text

XMM-Newton observation of the Lockman Hole

G. Hasinger, B. Altieri, M. Arnaud et al. · Astronomy and Astrophysics · 2001 · 361 citations · Full text

, , +11

A<i>CHANDRA</i>PERSPECTIVE ON GALAXY-WIDE X-RAY BINARY EMISSION AND ITS CORRELATION WITH STAR FORMATION RATE AND STELLAR MASS: NEW RESULTS FROM LUMINOUS INFRARED GALAXIES

Bret Lehmer, D. M. Alexander, F. E. Bauer et al. · The Astrophysical Journal · 2010 · 317 citations · Full text

The Relationship of Hard X‐Ray and Optical Line Emission in Low‐Redshift Active Galactic Nuclei

Timothy M. Heckman, A. Ptak, A. E. Hornschemeier et al. · The Astrophysical Journal · 2005 · 267 citations · Full text

DISCOVERY OF COHERENT PULSATIONS FROM THE ULTRALUMINOUS X-RAY SOURCE NGC 7793 P13

Felix Fürst, D. J. Walton, Fiona A. Harrison et al. · Maryland Shared Open Access Repository (USMAI Consortium) · 2016 · 261 citations · Full text

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