K
Krzysztof Ulaczyk
Researcher at University of Warwick
Publications - 400
Citations - 17476
Krzysztof Ulaczyk is an academic researcher from University of Warwick. The author has contributed to research in topics: Gravitational microlensing & Planet. The author has an hindex of 60, co-authored 371 publications receiving 15774 citations. Previous affiliations of Krzysztof Ulaczyk include Max Planck Society & University of Warsaw.
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Journal ArticleDOI
An eclipsing-binary distance to the Large Magellanic Cloud accurate to two per cent
Grzegorz Pietrzyński,Grzegorz Pietrzyński,Dariusz Graczyk,Wolfgang Gieren,Ian B. Thompson,Bogumił Pilecki,Bogumił Pilecki,Andrzej Udalski,Igor Soszyński,Szymon Kozłowski,Piotr Konorski,Ksenia Suchomska,Giuseppe Bono,Giuseppe Bono,P. G. Prada Moroni,Sandro Villanova,Nicolas Nardetto,F. Bresolin,R. P. Kudritzki,Jesper Storm,Alexandre Gallenne,Radosław Smolec,Dante Minniti,M. Kubiak,Michał K. Szymański,Radosław Poleski,Radosław Poleski,Łukasz Wyrzykowski,Krzysztof Ulaczyk,P. Pietrukowicz,Marek Górski,Paulina Karczmarek +31 more
TL;DR: Determinations of the distances to eight long-period, late-type eclipsing systems in the Large Magellanic Cloud, composed of cool, giant stars, provide a firm base for a 3-per-cent determination of the Hubble constant.
Journal ArticleDOI
One or more bound planets per Milky Way star from microlensing observations
Arnaud Cassan,Arnaud Cassan,D. Kubas,D. Kubas,J. P. Beaulieu,J. P. Beaulieu,Martin Dominik,Martin Dominik,Keith Horne,Keith Horne,J. G. Greenhill,J. G. Greenhill,Joachim Wambsganss,Joachim Wambsganss,J. W. Menzies,Andrew Williams,U. G. Jørgensen,U. G. Jørgensen,Andrzej Udalski,David P. Bennett,David P. Bennett,Michael D. Albrow,Michael D. Albrow,V. Batista,S. Brillant,S. Brillant,J. A. R. Caldwell,J. A. R. Caldwell,Andrew A. Cole,Andrew A. Cole,Ch. Coutures,K. H. Cook,K. H. Cook,S. Dieters,S. Dieters,D. Dominis Prester,D. Dominis Prester,J. Donatowicz,J. Donatowicz,Pascal Fouqué,Pascal Fouqué,K. Hill,K. Hill,N. Kains,N. Kains,Stephen R. Kane,Stephen R. Kane,J. B. Marquette,R. Martin,K. R. Pollard,K. R. Pollard,Kailash C. Sahu,Kailash C. Sahu,C. Vinter,C. Vinter,D. Warren,D. Warren,B. Watson,B. Watson,M. Zub,M. Zub,Takahiro Sumi,Michał K. Szymański,M. Kubiak,Radosław Poleski,Igor Soszyński,Krzysztof Ulaczyk,Grzegorz Pietrzyński,Grzegorz Pietrzyński,Łukasz Wyrzykowski,Łukasz Wyrzykowski +70 more
TL;DR: It is concluded that stars are orbited by planets as a rule, rather than the exception, and that of stars host Jupiter-mass planets 0.5–10 au (Sun–Earth distance) from their stars.
Journal ArticleDOI
The Emergence of a Lanthanide-Rich Kilonova Following the Merger of Two Neutron Stars
Nial R. Tanvir,Andrew J. Levan,Carlos González-Fernández,Oleg Korobkin,Ilya Mandel,Stephan Rosswog,Jens Hjorth,P. D'Avanzo,A. S. Fruchter,Chris L. Fryer,Tuomas Kangas,Bo Milvang-Jensen,S. Rosetti,Danny Steeghs,Ryan Wollaeger,Zach Cano,Chris M. Copperwheat,Stefano Covino,Valerio D'Elia,Valerio D'Elia,A. de Ugarte Postigo,A. de Ugarte Postigo,P. A. Evans,Wesley Even,Stephen Fairhurst,R. Figuera Jaimes,Christopher J. Fontes,Yuri I. Fujii,Yuri I. Fujii,Johan P. U. Fynbo,B. P. Gompertz,Jochen Greiner,G. Hodosan,Mike Irwin,Pall Jakobsson,U. G. Jørgensen,David Alexander Kann,J. D. Lyman,D. Malesani,Richard G. McMahon,A. Melandri,P. T. O'Brien,J. P. Osborne,Eliana Palazzi,Daniel A. Perley,Elena Pian,S. Piranomonte,Markus Rabus,E. Rol,Antonia Rowlinson,Antonia Rowlinson,Steve Schulze,Patrick J. Sutton,Christina C. Thöne,Krzysztof Ulaczyk,Darach Watson,Klaas Wiersema,Ralph A. M. J. Wijers +57 more
TL;DR: In this article, the authors reported the discovery and monitoring of the near-infrared counterpart (AT2017gfo) of a binary neutron-star merger event detected as a gravitational wave source by Advanced Laser Interferometer Gravitational-wave Observatory (LIGO)/Virgo (GW170817) and as a short gamma-ray burst by Fermi Gamma-ray Burst Monitor (GBM) and Integral SPI-ACS (GRB 170817A).
Journal ArticleDOI
Reddening and extinction toward the galactic bulge from ogle-iii: the inner milky way's rv ∼ 2.5 extinction curve*
David M. Nataf,David M. Nataf,Andrew Gould,Pascal Fouqué,Pascal Fouqué,Oscar A. Gonzalez,Jennifer A. Johnson,Jan Skowron,Andrzej Udalski,Michał K. Szymański,M. Kubiak,Grzegorz Pietrzyński,Grzegorz Pietrzyński,Igor Soszyński,Krzysztof Ulaczyk,Łukasz Wyrzykowski,Łukasz Wyrzykowski,Radosław Poleski +17 more
TL;DR: In this article, the authors combine VI photometry from OGLE-III with VISTA Variables in The Via Lactea survey and Two Micron All Sky Survey measurements of E(J? Ks ) to resolve the longstanding problem of the non-standard optical extinction toward the Galactic bulge.
Journal ArticleDOI
The Emergence of a Lanthanide-Rich Kilonova Following the Merger of Two Neutron Stars
Nial R. Tanvir,Andrew J. Levan,Carlos González-Fernández,Oleg Korobkin,Ilya Mandel,Stephan Rosswog,Jens Hjorth,P. D'Avanzo,A. S. Fruchter,Chris L. Fryer,T. Kangas,B. Milvang-Jensen,S. Rosetti,Danny Steeghs,Ryan Wollaeger,Zach Cano,Chris M. Copperwheat,Stefano Covino,Valerio D'Elia,A. de Ugarte Postigo,P. A. Evans,Wesley Even,Stephen Fairhurst,R. Figuera Jaimes,Christopher J. Fontes,Yuri I. Fujii,Johan P. U. Fynbo,B. P. Gompertz,Jochen Greiner,G. Hodosan,Mike Irwin,Pall Jakobsson,U. G. Jørgensen,D. A. Kann,J. D. Lyman,D. Malesani,Richard G. McMahon,A. Melandri,P. T. O'Brien,J. P. Osborne,Eliana Palazzi,Daniel A. Perley,Elena Pian,S. Piranomonte,Markus Rabus,E. Rol,Antonia Rowlinson,Steve Schulze,Patrick J. Sutton,C. C. Thoene,Krzysztof Ulaczyk,Darach Watson,Klaas Wiersema,Ralph A. M. J. Wijers +53 more
TL;DR: In this article, the authors reported the discovery and monitoring of the near-infrared counterpart (AT2017gfo) of a binary neutron-star merger event detected as a gravitational wave source by Advanced LIGO/Virgo (GW170817) and as a short gamma-ray burst by Fermi/GBM and Integral/SPI-ACS (GRB 170817A), which is consistent with predictions for the behaviour of a "kilonova/macronova", powered by the radioactive decay of massive neutron-rich nucl