Y
Yasushi Muraki
Researcher at Nagoya University
Publications - 494
Citations - 16785
Yasushi Muraki is an academic researcher from Nagoya University. The author has contributed to research in topics: Gravitational microlensing & Planet. The author has an hindex of 59, co-authored 466 publications receiving 15726 citations. Previous affiliations of Yasushi Muraki include Max Planck Society & Konan University.
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Journal ArticleDOI
Discovery of a cool planet of 5.5 Earth masses through gravitational microlensing
J. P. Beaulieu,David P. Bennett,Pascal Fouqué,Andrew Williams,Martin Dominik,U. G. Jørgensen,D. Kubas,Arnaud Cassan,C. Coutures,J. G. Greenhill,K. M. Hill,J. W. Menzies,Penny D. Sackett,Michael D. Albrow,S. Brillant,J. A. R. Caldwell,J. J. Calitz,K. H. Cook,E. Corrales,M. Desort,S. Dieters,D. Dominis,J. Donatowicz,M. Hoffman,Stephen R. Kane,J. B. Marquette,R. M. Martin,P. J. Meintjes,K. R. Pollard,Kailash C. Sahu,C. Vinter,Joachim Wambsganss,K. Woller,Keith Horne,Iain A. Steele,D. M. Bramich,D. M. Bramich,Martin Burgdorf,Colin Snodgrass,M. F. Bode,Andrzej Udalski,Michał K. Szymański,M. Kubiak,T. Wiȩckowski,Grzegorz Pietrzyński,Igor Soszyński,O. Szewczyk,Łukasz Wyrzykowski,Bohdan Paczynski,Fumio Abe,Ian A. Bond,T. R. Britton,T. R. Britton,A. C. Gilmore,John B. Hearnshaw,Yoshitaka Itow,Kisaku Kamiya,P. M. Kilmartin,A. V. Korpela,Kimiaki Masuda,Yutaka Matsubara,M. Motomura,Yasushi Muraki,Shota Nakamura,C. Okada,Kouji Ohnishi,Nicholas J. Rattenbury,Takashi Sako,Susumu Sato,Misao Sasaki,T. Sekiguchi,Denis J. Sullivan,P. J. Tristram,Philip Yock,T. Yoshioka +74 more
TL;DR: The detection of a cool, sub-Neptune-mass planets may be more common than gas giant planets, as predicted by the core accretion theory, and is suggested to name OGLE-2005-BLG-390Lb, indicating a planetary mass companion to the lens star of the microlensing event.
Journal ArticleDOI
Unbound or distant planetary mass population detected by gravitational microlensing
Takahiro Sumi,Kisaku Kamiya,David P. Bennett,Ian A. Bond,Fumio Abe,C. S. Botzler,Akihiko Fukui,K. Furusawa,John B. Hearnshaw,Yoshitaka Itow,P. M. Kilmartin,A. V. Korpela,W. Lin,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,N. Miyake,M. Motomura,Yasushi Muraki,M. Nagaya,Shota Nakamura,Kouji Ohnishi,Teppei Okumura,Y. C. Perrott,Nicholas J. Rattenbury,To. Saito,T. K. Sako,Denis J. Sullivan,Winston L. Sweatman,P. J. Tristram,P. C. M. Yock,Andrzej Udalski,Michał K. Szymański,M. Kubiak,Grzegorz Pietrzyński,Radosław Poleski,Igor Soszyński,Łukasz Wyrzykowski,K. Ulaczyk +38 more
TL;DR: The discovery of a population of unbound or distant Jupiter-mass objects is reported, which are almost twice as common as main-sequence stars, based on two years of gravitational microlensing survey observations towards the Galactic Bulge.
Journal ArticleDOI
Real-time difference imaging analysis of moa galactic bulge observations during 2000
Ian A. Bond,Ian A. Bond,Fumio Abe,R. J. Dodd,R. J. Dodd,R. J. Dodd,John B. Hearnshaw,Morihiro Honda,Jun Jugaku,P. M. Kilmartin,P. M. Kilmartin,A. Marles,Kimiaki Masuda,Yutaka Matsubara,Yasushi Muraki,Takashi Nakamura,G. Nankivell,S. Noda,C. Noguchi,Kouji Ohnishi,Nicholas J. Rattenbury,M. Reid,To. Saito,Hiroshi Sato,Maki Sekiguchi,J. Skuljan,D. J. Sullivan,Takahiro Sumi,Mine Takeuti,Yoshiyuki Watase,S. Wilkinson,R. Yamada,T. Yanagisawa,Philip Yock +33 more
TL;DR: In this paper, the authors describe observations carried out by the MOA group of the Galactic bulge during 2000 that were designed to detect efficiently gravitational microlensing of faint stars in which the magnification is high and/or of short duration.
Journal ArticleDOI
OGLE 2003-BLG-235/MOA 2003-BLG-53: A Planetary Microlensing Event
Ian A. Bond,Andrzej Udalski,M. Jaroszyński,M. Jaroszyński,Nicholas J. Rattenbury,Bohdan Paczynski,Igor Soszyński,Lukasz Wyrzykowski,Michał K. Szymański,M. Kubiak,O. Szewczyk,O. Szewczyk,K. Żebruń,Grzegorz Pietrzyński,Grzegorz Pietrzyński,Fumio Abe,David P. Bennett,S. Eguchi,Y. Furuta,John B. Hearnshaw,Koki Kamiya,P. M. Kilmartin,Y. Kurata,Kimiaki Masuda,Yutaka Matsubara,Yasushi Muraki,S. Noda,K. Okajima,Takashi Sako,T. Sekiguchi,Denis J. Sullivan,Takahiro Sumi,P. J. Tristram,T. Yanagisawa,Philip Yock +34 more
TL;DR: In this paper, a short-duration (~7 days) low-amplitude deviation in the light curve due to a single-lens profile was observed in both the MOA (Microlensing Observations in Astrophysics) and OGLE (Optical Gravitational Lensing Experiment) survey observations.
Journal ArticleDOI
Frequency of solar-like systems and of ice and gas giants beyond the snow line from high-magnification microlensing events in 2005-2008
Andrew Gould,Subo Dong,B. S. Gaudi,Andrzej Udalski,Ian A. Bond,J. G. Greenhill,Rachel Street,Martin Dominik,Takahiro Sumi,Michał K. Szymański,C. Han,William H. Allen,Greg Bolt,M. Bos,G. W. Christie,Darren L. DePoy,Jack D. Drummond,Jason D. Eastman,Avishay Gal-Yam,D. Higgins,J. Janczak,Shai Kaspi,Szymon Kozłowski,C.-U. Lee,F. Mallia,Anaëlle Maury,D. Maoz,Jennie McCormick,L. A. G. Monard,D. Moorhouse,N. D. Morgan,Tim Natusch,Eran O. Ofek,Byeong-Gon Park,Richard W. Pogge,David Polishook,R. Santallo,Avi Shporer,O. Spector,G. Thornley,Jennifer C. Yee,M. Kubiak,Grzegorz Pietrzyński,Igor Soszyński,O. Szewczyk,Łukasz Wyrzykowski,Krzysztof Ulaczyk,Radosław Poleski,Fumio Abe,David P. Bennett,C. S. Botzler,D. Douchin,M. Freeman,Akihiko Fukui,K. Furusawa,John B. Hearnshaw,S. Hosaka,Yoshitaka Itow,K. Kamiya,P. M. Kilmartin,A. Korpela,W. Lin,C. H. Ling,S. Makita,Kimiaki Masuda,Yutaka Matsubara,N. Miyake,Yasushi Muraki,M. Nagaya,K. Nishimoto,Kouji Ohnishi,Teppei Okumura,Y. C. Perrott,L. Philpott,Nicholas J. Rattenbury,To. Saito,Takashi Sako,Denis J. Sullivan,W. L. Sweatman,P. J. Tristram,E. von Seggern,P. C. M. Yock,Michael D. Albrow,V. Batista,J. P. Beaulieu,S. Brillant,J. Caldwell,J. J. Calitz,Arnaud Cassan,Andrew A. Cole,K. W. Cook,C. Coutures,S. Dieters,D. Dominis Prester,J. Donatowicz,Pascal Fouqué,K. Hill,M. Hoffman,Francisco Jablonski,Stephen R. Kane,N. Kains,D. Kubas,J.-B. Marquette,R. M. Martin,Eder Martioli,P. J. Meintjes,J. Menzies,Ettore Pedretti,K. R. Pollard,K. C. Sahu,C. Vinter,J. Wambsganss,R. A. Watson,Andrew Williams,M. Zub,Alasdair Allan,M. F. Bode,D. M. Bramich,Martin Burgdorf,N. Clay,S. Fraser,E. Hawkins,Keith Horne,E. Kerins,T. A. Lister,C. Mottram,E. S. Saunders,Colin Snodgrass,Iain A. Steele,Yiannis Tsapras,U. G. Jørgensen,Timo Anguita,Valerio Bozza,S. Calchi Novati,K. Harpsøe,Tobias C. Hinse,M. Hundertmark,P. Kjærgaard,C. Liebig,C. Liebig,Luigi Mancini,G. Masi,M. Mathiasen,Sohrab Rahvar,Davide Ricci,Gaetano Scarpetta,John Southworth,Jean Surdej,Christina C. Thöne,Christina C. Thöne +149 more
TL;DR: In this paper, the authors presented the first measurement of the planet frequency beyond the "snow line," for the planet-to-star mass-ratio interval during 2005-2008 microlensing events during the survey-plus-follow-up high-magnification channel.