Andrew Gould
Ohio State University
680 Papers
12.7K Citations
Andrew Gould is an academic researcher from Ohio State University. The author has contributed to research in topics: Gravitational microlensing & Planet. The author has an hindex of 94, co-authored 633 publications. Previous affiliations of Andrew Gould include Chungbuk National University & Collège de France.
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Papers
A Short, Nonplanetary, Microlensing Anomaly: Observations and Light-Curve Analysis of MACHO 99-BLG-47
Michael D. Albrow,J. An,J.-P. Beaulieu,J. A. R. Caldwell,Darren L. DePoy,Martin Dominik,B. S. Gaudi,Andrew Gould,J. G. Greenhill,K. Hill,Stephen R. Kane,R. M. Martin,J. W. Menzies,R. W. Pogge,K. R. Pollard,Penny D. Sackett,Kailash C. Sahu,P. Vermaak,R. D. Watson,Andrew Williams +19 more
TL;DR: In this article, the authors show that the lens of MACHO 99-BLG-47 is in fact an extreme-separation binary, not a planetary system, thus demonstrating for the first time that these two important classes of events can be distinguished in practice.
A New Type of Ambiguity in the Planet and Binary Interpretations of Central Perturbations of High-magnification Gravitational Microlensing Events
J.-Y. Choi,In-Gu Shin,C. Han,Andrzej Udalski,Takahiro Sumi,Andrew Gould,Valerio Bozza,Martin Dominik,Pascal Fouqué,Keith Horne,Michał K. Szymański,M. Kubiak,Igor Soszyński,Grzegorz Pietrzyński,Radosław Poleski,Krzysztof Ulaczyk,P. Pietrukowicz,S. Kozlowski,Jan Skowron,Łukasz Wyrzykowski,Fumio Abe,David P. Bennett,Ian A. Bond,C. S. Botzler,Paul Chote,M. Freeman,Akihiko Fukui,K. Furusawa,Yoshitaka Itow,S. Kobara,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,N. Miyake,Yasushi Muraki,Kantaro Ohmori,Kouji Ohnishi,Nicholas J. Rattenbury,To. Saito,Denis J. Sullivan,Daisuke Suzuki,Kazuyoshi Suzuki,Winston L. Sweatman,S. Takino,Paul J. Tristram,K. Wada,P. C. M. Yock,D. M. Bramich,Colin Snodgrass,Iain A. Steele,Rachel Street,Yiannis Tsapras,Khalid Al-Subai,P. Browne,Martin Burgdorf,S. Calchi Novati,Peter N. Dodds,Stefan Dreizler,X.-S. Fang,Frank Grundahl,C.-H. Gu,S. Hardis,K. B. W. Harpsøe,Tobias C. Hinse,Allan Hornstrup,M. Hundertmark,Jens Jessen-Hansen,U. G. Jørgensen,N. Kains,Eamonn Kerins,C. Liebig,Mikkel N. Lund,M. Lunkkvist,Luigi Mancini,M. Mathiasen,Matthew T. Penny,Sohrab Rahvar,Davide Ricci,Gaetano Scarpetta,Jesper Skottfelt,John Southworth,Jean Surdej,J. Tregloan-Reed,Joachim Wambsganss,Olivier Wertz,Leonardo A. Almeida,V. Batista,G. W. Christie,Darren L. DePoy,Subo Dong,B. S. Gaudi,Calen B. Henderson,Francisco Jablonski,C.-U. Lee,Jennie McCormick,D. McGregor,D. Moorhouse,Tim Natusch,H. Ngan,R. W. Pogge,Thiam-Guan Tan,G. Thornley,Jennifer C. Yee,Michael D. Albrow,Etienne Bachelet,J. P. Beaulieu,S. Brillant,Arnaud Cassan,Andrew A. Cole,E. Corrales,C. Coutures,S. Dieters,D. Dominis Prester,J. Donatowicz,J. G. Greenhill,D. Kubas,J. B. Marquette,J. W. Menzies,Kailash C. Sahu,M. Zub +119 more
TL;DR: In this article, a case of central perturbations for which it is difficult to distinguish the planetary and binary interpretations is presented, where the peak of a lensing light curve affected by this perturbation appears to be blunt and flat.
The Spitzer Microlensing Program as a Probe for Globular Cluster Planets: Analysis of OGLE-2015-BLG-0448
Radosław Poleski,Wei Zhu,G. W. Christie,Andrzej Udalski,Andrew Gould,Etienne Bachelet,Jesper Skottfelt,Sebastiano Calchi Novati,Michał K. Szymański,Igor Soszyński,Grzegorz Pietrzyński,Łukasz Wyrzykowski,Krzysztof Ulaczyk,Paweł Pietrukowicz,Szymon Kozłowski,Jan Skowron,P. Mróz,M. Pawlak,C. A. Beichman,Geoff Bryden,Sean Carey,Michael Fausnaugh,B. S. Gaudi,Calen B. Henderson,Richard W. Pogge,Yossi Shvartzvald,B. Wibking,Jennifer C. Yee,Thomas G. Beatty,Jason D. Eastman,Jack D. Drummond,M. Friedmann,M. Henderson,John Asher Johnson,Shai Kaspi,D. Maoz,J. McCormick,Nate McCrady,Tim Natusch,H. Ngan,I. Porritt,Howard M. Relles,D. H. Sliski,Thiam-Guan Tan,Robert A. Wittenmyer,Jason T. Wright,Rachel Street,Yiannis Tsapras,D. M. Bramich,Keith Horne,Colin Snodgrass,Iain A. Steele,J. W. Menzies,R. Figuera Jaimes,R. Figuera Jaimes,Joachim Wambsganss,R. W. Schmidt,Arnaud Cassan,Clément Ranc,Shude Mao,Valerio Bozza,Martin Dominik,M. Hundertmark,U. G. Jørgensen,Michael I. Andersen,Martin Burgdorf,Simona Ciceri,Giuseppe D'Ago,Daniel F. Evans,Shenghong Gu,Tobias C. Hinse,N. Kains,Eamonn Kerins,Heidi Korhonen,M. Kuffmeier,Luigi Mancini,A. Popovas,Markus Rabus,Sohrab Rahvar,R. T. Rasmussen,Gaetano Scarpetta,John Southworth,Jean Surdej,Eduardo Unda-Sanzana,P. Verma,C. von Essen,Yi-Bo Wang,Olivier Wertz +87 more
TL;DR: The OGLE-2015-BLG-0448 microlensing event was observed by Spitzer and lay within the tidal radius of the globular cluster NGC 6558 as mentioned in this paper.
The POINT-AGAPE survey: 4 high signal-to-noise microlensing candidates detected towards M 31
S. Paulin-Henriksson,P. Baillon,A. Bouquet,Bernard Carr,M. Creze,M. Creze,Nick Evans,Y. Giraud-Heraud,Andrew Gould,Andrew Gould,Paul C. Hewett,J. Kaplan,E. Kerins,Y. Le Du,A.L. Melchior,Stephen Smartt,David Valls-Gabaud +16 more
TL;DR: In this paper, a survey of the Andromeda galaxy for unresolved microlensing (pixel lensing) was carried out, and a subset of four short timescale, high signal-to-noise micro-lensing candidates were found by imposing severe selection criteria: the source flux variation exceeds the flux of an R = 21 magnitude star and the full width at half maximum timescale is less than 25 days.
Systematics of RR Lyrae Statistical Parallax. II. Proper Motions and Radial Velocities
TL;DR: In this paper, the authors investigate whether a misestimate of proper motions or radial velocities could have been a source of substantial systematic errors in the statistical parallax determination of the absolute magnitude of RR Lyrae stars.