P
P. Pietrukowicz
Researcher at University of Warsaw
Publications - 287
Citations - 9671
P. Pietrukowicz is an academic researcher from University of Warsaw. The author has contributed to research in topics: Gravitational microlensing & Light curve. The author has an hindex of 46, co-authored 264 publications receiving 8854 citations. Previous affiliations of P. Pietrukowicz include Polish Academy of Sciences & Pontifical Catholic University of Chile.
Papers
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Journal ArticleDOI
Variability of Massive Stars with Known Spectral Types in the Small Magellanic Cloud Using 8 Years of OGLE-III Data
M. Kourniotis,Alceste Z. Bonanos,Igor Soszyński,Radosław Poleski,G. Krikelis,Andrzej Udalski,Michał K. Szymański,M. Kubiak,Grzegorz Pietrzyński,L. Wyrzykowski,Krzysztof Ulaczyk,S. Kozlowski,P. Pietrukowicz +12 more
TL;DR: In this article, the authors presented a variability study of 4646 massive stars in the Small Magellanic Cloud (SMC) with known spectral types from the catalog of Bonanos et al. using the light curves from the OGLE-III database.
Journal ArticleDOI
An Isolated Stellar-mass Black Hole Detected through Astrometric Microlensing
Kailash C. Sahu,Jay Anderson,Stefano Casertano,Howard E. Bond,Andrzej Udalski,Martin Dominik,Annalisa Calamida,Andrea Bellini,Thomas M. Brown,Marina Rejkuba,Varun Bajaj,N. Kains,Henry C. Ferguson,Chris L. Fryer,Philip Yock,P. Mróz,Szymon Kozłowski,P. Pietrukowicz,R. Poleski,Jan Skowron,Igor Soszyński,Michał K. Szymański,Krzysztof Ulaczyk,L. Wyrzykowski,J. P. Beaulieu,J. B. Marquette,Andrew A. Cole,K. Hill,S. Dieters,Ch. Coutures,D. Dominis-Prester,Etienne Bachelet,J. W. Menzies,Michael Albrow,K. R. Pollard,Andrew Gould,Jennifer C. Yee,William H. Allen,Leonardo A. Almeida,G. W. Christie,J.D. Drummond,Avishay Gal-Yam,Evgeny Gorbikov,Francisco Jablonski,Chung-Uk Lee,Dan Maoz,Ilan Manulis,Jennie McCormick,Tim Natusch,Richard W. Pogge,Yossi Shvartzvald,U. G. Jørgensen,Khalid Alsubai,Michael I. Andersen,Valerio Bozza,S. Calchi Novati,Tobias C. Hinse,M. Hundertmark,Tim-Oliver Husser,Eamonn Kerins,Penélope Longa-Peña,Luigi Mancini,Matthew T. Penny,Sohrab Rahvar,Davide Ricci,Sedighe Sajadian,Jesper Skottfelt,Colin Snodgrass,John Southworth,J. Tregloan-Reed,Joachim Wambsganss,O. Wertz,Yiannis Tsapras,Rachel Street,D. M. Bramich,Keith Horne,Iain A. Steele STScI,Psu,U Warsaw,U. S. Andrews,Eso,U. Columbia,Los Alamons Nat. Lab.,Universityof Auckland,U Warwick,1. U. Tasmania,Iap Paris,Univ. Bordeaux,Natsuyama Japan,Las Cumbres Obs.,Saao,South Africa,U. Canterbury,New Zealand,Max-Planck-Inst.,Heidelberg,Ohio State Univ.,Cfa,Cambridge,Vintage Lane Obs,U. Valencia,Spain.,Auckland Obs. New Zealand,Possum Obs. New Zealand,Univ. Southern Queensland,Australia,Israel,T. Univ.,K. Astron,Sp Sci Institute,Weizmann Inst of Sci,Farm Cove Obs,Irasr,Universityof Copenhagen,Denmark,Qeeri,Doha,Qatar,U. Salerno,Italy.,Istit. Naz. Fis. Nucl.,Napoli,Ipac,Pasadena,Inst. Astron.,Toruń,Poland,Chungnam Nat. Univ.,S. Korea,UniversityHospital Heidelberg,German,U. Gottingen,Jodrell Bank Centre Astroph.,Manchester,UK.,U. Antofagasta,Chile,U Rome,-INAF,Turin,Louisiana State Univ.,Baton Rouge,Usa,Sharif Univ. of Tech,Tehran,Iran.,Padova,Isfahan Univ. Tech.,Isfahan,Open University,Milton Keynes,U Edinburgh,Keele Univ.,Staffordshire,U. Atacama,Universitede Liege,Belgium,Nyu Abu Dhabi,Uae,Liverpool John Moores Univ.,Ogle Collaboration,PLANETRoboNET Collaboration,microFUN Collaboration,MiNDSTEp Consortium,R. Collaboration +164 more
TL;DR: The first unambiguous detection and mass measurement of an isolated stellar-mass black hole (BH) using any technique was reported by as discussed by the authors , who used the Hubble Space Telescope (HST) to carry out precise astrometry of the source star of the long-duration (t E ≃ 270 days) high-magnification microlensing event MOA-2011-BLG-191/OGLE-11-0462 in the direction of the Galactic bulge.
The OGLE Collection of Variable Stars. Over 45 000 RR Lyrae Stars in the Magellanic System
Igor Soszyński,Andrzej Udalski,Michał K. Szymański,Łukasz Wyrzykowski,K. Ulaczyk,Radosław Poleski,P. Pietrukowicz,S. Kozlowski,D. M. Skowron,Jan Skowron,P. Mróz,Michał Pawlak +11 more
Journal ArticleDOI
Discovery of period doubling in BL Herculis stars of the OGLE survey. Observations and theoretical models
Radosław Smolec,Igor Soszyński,P. Moskalik,Andrzej Udalski,Michał K. Szymański,M. Kubiak,Grzegorz Pietrzyński,L. Wyrzykowski,K. Ulaczyk,Radosław Poleski,S. Kozlowski,P. Pietrukowicz +11 more
TL;DR: In this paper, the authors reported the discovery of a period doubling behavior in a 2.4d BL Herculis-type variable of the Galactic bulge, which is the first observational confirmation of their theoretical results.
Journal ArticleDOI
OGLE-2015-BLG-1482L: The First Isolated Low-mass Microlens in the Galactic Bulge
S. J. Chung,S. J. Chung,Wei Zhu,Andrzej Udalski,C.-U. Lee,C.-U. Lee,Yoon-Hyun Ryu,Y. K. Jung,In-Gu Shin,Jennifer C. Yee,Kyu-Ha Hwang,Andrew Gould,Andrew Gould,Andrew Gould,Michael D. Albrow,Sang-Mok Cha,Sang-Mok Cha,C. Han,D.-J. Kim,Hyoun-Woo Kim,Seung-Lee Kim,Seung-Lee Kim,Yun Hak Kim,Yun Hak Kim,Yongseok Lee,Yongseok Lee,Byeong-Gon Park,Byeong-Gon Park,Richard W. Pogge,Radosław Poleski,Radosław Poleski,P. Mróz,P. Pietrukowicz,Jan Skowron,Michał K. Szymański,Igor Soszyński,S. Kozlowski,Krzysztof Ulaczyk,Krzysztof Ulaczyk,Michał Pawlak,C. A. Beichman,G. Bryden,S. Calchi Novati,S. Calchi Novati,Sean Carey,Michael Fausnaugh,B. S. Gaudi,Calen B. Henderson,Yossi Shvartzvald,B. Wibking +49 more
TL;DR: In this paper, the authors analyzed OGLE-2015-BLG-1482 simultaneously observed from two ground-based surveys and from Spitzer and found that the degeneracy between the two solutions is severe (Δx^2 = 0.3).