Ptak, Andrew F.

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  1. Ptak A, Hornschemeier A, Zezas A, Lehmer B, Yukita M, Wik D, Antoniou V, Argo M, Ballo L, Bechtol K, Boggs S, Della Ceca R, Christensen F, Craig W, Hailey C, Harrison F, Krivonos R, Maccarone T, Stern D, Tatum M, Venters T, Zhang W. FOCUSED, HARD X-RAY LOOK AT ARP 299 WITH NUSTAR. Astrophys. J. 2015;800 (2):10.
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  2. Rana V, Harrison F, Bachetti M, Walton D, Furst F, Barret D, Miller J, Fabian A, Boggs S, Christensen F, Craig W, Grefenstette B, Hailey C, Madsen K, Ptak A, Stern D, Webb N, Zhang W. THE BROADBAND XMM-NEWTON AND NUSTAR X-RAY SPECTRA OF TWO ULTRALUMINOUS X-RAY SOURCES IN THE GALAXY IC 342. Astrophys. J. 2015;799 (2):12.
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  3. Smith R, Ackermann M, Allured R, Bautz M, Bregman J, Bookbinder J, Burrows D, Brenneman L, Brickhouse N, Cheimets P, Carrier A, Freeman M, Kaastra J, McEntaffer R, Miller J, Ptak A, Petre R, Vacanti G. ARCUS: AN ISS-ATTACHED HIGH-RESOLUTION X-RAY GRATING SPECTROMETER. In: SPACE TELESCOPES AND INSTRUMENTATION 2014: ULTRAVIOLET TO GAMMA RAY. Conference on Space Telescopes and Instrumentation - Ultraviolet to Gamma Ray; JUN 22-26, 2014; Montreal, CANADA. 2014. p. 12.
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  4. Walton D, Harrison F, Grefenstette B, Miller J, Bachetti M, Barret D, Boggs S, Christensen F, Craig W, Fabian A, Fuerst F, Hailey C, Madsen K, Parker M, Ptak A, Rana V, Stern D, Webb N, Zhang W. BROADBAND X-RAY SPECTRA OF THE ULTRALUMINOUS X-RAY SOURCE HOLMBERG IX X-1 OBSERVED WITH NUSTAR, XMM-NEWTON, AND SUZAKU. Astrophys. J. 2014;793 (1):12.
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  5. LaMassa S, Yaqoob T, Ptak A, Jia J, Heckman T, Gandhi P, Urry C. DELVING INTO X-RAY OBSCURATION OF TYPE 2 AGN, NEAR AND FAR. Astrophys. J. 2014;787 (1):17.
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  6. Maccarone T, Lehmer B, Leyder J, Antoniou V, Hornschemeier A, Ptak A, Wik D, Zezas A. NEW CANDIDATE WOLF-RAYET X-RAY BINARY IN NGC 253. Mon. Not. Roy. Astron. Soc. 2014;439 (3):3064-3072.
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  7. Gandhi P, Lansbury G, Alexander D, Stern D, Arevalo P, Ballantyne D, Balokovic M, Bauer F, Boggs S, Brandt W, Brightman M, Christensen F, Comastri A, Craig W, Del Moro A, Elvis M, Fabian A, Hailey C, Harrison F, Hickox R, Koss M, LaMassa S, Luo B, Madejski G, Ptak A, Puccetti S, Teng S, Urry C, Walton D, Zhang W. NUSTAR UNVEILS A COMPTON-THICK TYPE 2 QUASAR IN MRK 34. Astrophys. J. 2014;792 (2):13.
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  8. Gandhi P, Lansbury G, Alexander D, Stern D, Arevalo P, Ballantyne D, Balokovic M, Bauer F, Boggs S, Brandt W, Brightman M, Christensen F, Comastri A, Craig W, Del Moro A, Elvis M, Fabian A, Hailey C, Harrison F, Hickox R, Koss M, LaMassa S, Luo B, Madejski G, Ptak A, Puccetti S, Teng S, Urry C, Walton D, Zhang W. NUSTAR UNVEILS A COMPTON-THICK TYPE 2 QUASAR IN MRK 34 (VOL 792, PG 117, 2014). Astrophys. J. 2014;794 (2):2.
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  9. Wik D, Lehmer B, Hornschemeier A, Yukita M, Ptak A, Zezas A, Antoniou V, Argo M, Bechtol K, Boggs S, Christensen F, Craig W, Hailey C, Harrison F, Krivonos R, Maccarone T, Stern D, Venters T, Zhang W. SPATIALLY RESOLVING A STARBURST GALAXY AT HARD X-RAY ENERGIES: NUSTAR, CHANDRA, AND VLBA OBSERVATIONS OF NGC 253. Astrophys. J. 2014;797 (2):20.
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  10. Lehmer B, Berkeley M, Zezas A, Alexander D, Basu-Zych A, Bauer F, Brandt W, Fragos T, Hornschemeier A, Kalogera V, Ptak A, Sivakoff G, Tzanavaris P, Yukita M. THE X-RAY LUMINOSITY FUNCTIONS OF FIELD LOW-MASS X-RAY BINARIES IN EARLY-TYPE GALAXIES: EVIDENCE FOR A STELLAR AGE DEPENDENCE. Astrophys. J. 2014;789 (1):15.
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  11. Jia J, Ptak A, Heckman T, Zakamska N. AN ARCHIVAL CHANDRA AND XMM-NEWTON SURVEY OF TYPE 2 QUASARS. Astrophys. J. 2013;777 (1):17.
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  12. Walton D, Fuerst F, Harrison F, Stern D, Bachetti M, Barret D, Bauer F, Boggs S, Christensen F, Craig W, Fabian A, Grefenstette B, Hailey C, Madsen K, Miller J, Ptak A, Rana V, Webb N, Zhang W. AN EXTREMELY LUMINOUS AND VARIABLE ULTRALUMINOUS X-RAY SOURCE IN THE OUTSKIRTS OF CIRCINUS OBSERVED WITH NUSTAR. Astrophys. J. 2013;779 (2):18.
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  13. Robitaille T, Tollerud E, Greenfield P, Droettboom M, Bray E, Aldcroft T, Davis M, Ginsburg A, Price-Whelan A, Kerzendorf W, Conley A, Crighton N, Barbary K, Muna D, Ferguson H, Grollier F, Parikh M, Nair P, Guenther H, Deil C, Woillez J, Conseil S, Kramer R, Turner J, Singer L, Fox R, Weaver B, Zabalza V, Edwards Z, Bostroem K, Burke D, Casey A, Crawford S, Dencheva N, Ely J, Jenness T, Labrie K, Lim P, Pierfederici F, Pontzen A, Ptak A, Refsdal B, Servillat M, Streicher O. ASTROPY: A COMMUNITY PYTHON PACKAGE FOR ASTRONOMY. Astron. Astrophys. 2013;558 9.
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  14. Braito V, Ballo L, Reeves J, Risaliti G, Ptak A, Turner T. DECOUPLING ABSORPTION AND CONTINUUM VARIABILITY IN THE SEYFERT 2 NGC 4507. Mon. Not. Roy. Astron. Soc. 2013;428 (3):2516-2528.
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  15. Ptak A, Bandler S, Bookbinder J, Kelley R, Petre R, Smith R, Smith S. DESIGNING THE X-RAY MICROCALORIMETER SPECTROMETER FOR OPTIMAL SCIENCE RETURN. In: UV, X-RAY, AND GAMMA-RAY SPACE INSTRUMENTATION FOR ASTRONOMY XVIII. Conference on UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVIII; AUG 25-26, 2013; San Diego, CA. 2013. p. 10.
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  16. Basu-Zych A, Lehmer B, Hornschemeier A, Goncalves T, Fragos T, Heckman T, Overzier R, Ptak A, Schiminovich D. EVIDENCE FOR ELEVATED X-RAY EMISSION IN LOCAL LYMAN BREAK GALAXY ANALOGS. Astrophys. J. 2013;774 (2):12.
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  17. Tremmel M, Fragos T, Lehmer B, Tzanavaris P, Belczynski K, Kalogera V, Basu-Zych A, Farr W, Hornschemeier A, Jenkins L, Ptak A, Zezas A. MODELING THE REDSHIFT EVOLUTION OF THE NORMAL GALAXY X-RAY LUMINOSITY FUNCTION. Astrophys. J. 2013;766 (1):13.
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  18. Tzanavaris P, Fragos T, Tremmel M, Jenkins L, Zezas A, Lehmer B, Hornschemeier A, Kalogera V, Ptak A, Basu-Zych A. MODELING X-RAY BINARY EVOLUTION IN NORMAL GALAXIES: INSIGHTS FROM SINGS. Astrophys. J. 2013;774 (2):17.
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  19. Lehmer B, Wik D, Hornschemeier A, Ptak A, Antoniou V, Argo M, Bechtol K, Boggs S, Christensen F, Craig W, Hailey C, Harrison F, Krivonos R, Leyder J, Maccarone T, Stern D, Venters T, Zezas A, Zhang W. NUSTAR AND CHANDRA INSIGHT INTO THE NATURE OF THE 3-40 KEV NUCLEAR EMISSION IN NGC 253. Astrophys. J. 2013;771 (2):8.
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  20. LaMassa S, Heckman T, Ptak A, Urry C. ON THE STAR FORMATION-AGN CONNECTION AT Z LESS THAN OR SIMILAR TO 0.3. Astrophys. J. Lett. 2013;765 (2):6.
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