Related papers: The OGLE-II event sc5_2859 : a Classical Nova outb…

OGLE-2016-BLG-0156: Microlensing Event With Pronounced Microlens-Parallax Effects Yielding Precise Lens Mass Measurement

We analyze the gravitational binary-lensing event OGLE-2016-BLG-0156, for which the lensing light curve displays pronounced deviations induced by microlens-parallax effects. The light curve exhibits 3 distinctive widely-separated peaks and…

Solar and Stellar Astrophysics · Physics 2019-02-27 Youn Kil Jung , Cheongho Han , Ian A. Bond , Andrzej Udalski , Andrew Gould , Michael D. Albrow , Sun-Ju Chung , Kyu-Ha Hwang , Chung-Uk Lee , Yoon-Hyun Ryu , In-Gu Shin , Yossi Shvartzvald , Jennifer C. Yee , M. James Jee , Doeon Kim , Sang-Mok Cha , Dong-Jin Kim , Hyoun-Woo Kim , Seung-Lee Kim , Dong-Joo Lee , Yongseok Lee , Byeong-Gon Park , Richard W. Pogge , Fumio Abe , Richard Barry , David P. Bennett , Aparna Bhattacharya , Martin Donachie , Akihiko Fukui , Yuki Hirao , Yoshitaka Itow , Kohei Kawasaki , Iona Kondo , Naoki Koshimoto , Man Cheung Alex Li , Yutaka Matsubara , Yasushi Muraki , Shota Miyazaki , Masayuki~Nagakane , Clément Ranc , Nicholas J. Rattenbury , Haruno Suematsu , Denis J. Sullivan , Takahiro Sumi , Daisuke Suzuki , Paul J. Tristram , Atsunori Yonehara , Przemek Mróz , Radek Poleski , Jan Skowron , Michał K. Szymański , Igor Soszyński , Szymon Kozłowski , Paweł Pietrukowicz , Krzysztof Ulaczy , Michał Pawlak

OGLE-2015-BLG-1459L: The Challenges of Exo-Moon Microlensing

We show that dense OGLE and KMTNet $I$-band survey data require four bodies (sources plus lenses) to explain the microlensing light curve of OGLE-2015-BLG-1459. However, these can equally well consist of three lenses and one source (3L1S),…

Earth and Planetary Astrophysics · Physics 2018-06-13 K. -H. Hwang , A. Udalski , I. A. Bond , M. D. Albrow , S. -J. Chung , A. Gould , C. Han , Y. K. Jung , Y. -H. Ryu , I. -G. Shin , J. C. Yee , W. Zhu , S. -M. Cha , D. -J. Kim , H. -W. Kim , S. -L. Kim , C. -U. Lee , D. -J. Lee , Y. Lee , B. -G. Park , R. W. Pogge , M. Pawlak , R. Poleski , M. K. Szymański , J. Skowron , I. Soszyński , P. Mróz , S. Kozłowski , P. Pietrukowicz , K. Ulaczyk , F. Abe , Y. Asakura , R. Barry , D. P. Bennett , A. Bhattacharya , M. Donachie , P. Evans , A. Fukui , Y. Hirao , Y. Itow , K. Kawasaki , N. Koshimoto , M. C. A. Li , C. H. Ling , K. Masuda , Y. Matsubara , S. Miyazaki , Y. Muraki , M. Nagakane , K. Ohnishi , C. Ranc , N. J. Rattenbury , To. Saito , A. Sharan , D. J. Sullivan , T. Sumi , D. Suzuki , P. J. Tristram , T. Yamada , T. Yamada , A. Yonehara

The delay of shock breakout due to circumstellar material seen in most Type II Supernovae

Type II supernovae (SNe) originate from the explosion of hydrogen-rich supergiant massive stars. Their first electromagnetic signature is the shock breakout, a short-lived phenomenon which can last from hours to days depending on the…

High Energy Astrophysical Phenomena · Physics 2018-09-19 F. Förster , T. J. Moriya , J. C. Maureira , J. P. Anderson , S. Blinnikov , F. Bufano , G. Cabrera-Vives , A. Clocchiatti , Th. de Jaeger , P. A. Estévez , L. Galbany , S. González-Gaitán , G. Gräfener , M. Hamuy , E. Hsiao , P. Huentelemu , P. Huijse , H. Kuncarayakti , J. Martínez-Palomera , G. Medina , F. Olivares E. , G. Pignata , A. Razza , I. Reyes , J. San Martín , R. C. Smith , E. Vera , A. K. Vivas , A. de Ugarte Postigo , S. -C. Yoon , C. Ashall , M. Fraser , A. Gal-Yam , E. Kankare , L. Le Guillou , P. A. Mazzali , N. A. Walton , D. R. Young

Newly Discovered Eclipsing Binary 2MASS J18024395+4003309 (VSX J180243.9+400331):Two-Color Photometry vs Phenomenological Modeling

We report on analysis of the two-color VR CCD observations of the newly discovered variable 2MASS J18024395+4003309=VSX J180243.9+400331 obtained using the 1-m telescope of the Mt. Lemmon Observatory (LOAO) in the field of the intermediate…

Solar and Stellar Astrophysics · Physics 2015-12-15 Ivan L. Andronov , Yonggi Kim , Young-Hee Kim , Joh-Na Yoon , Lidia L. Chinarova , Mariia G. Tkachenko

AGAPEROS: Searches for microlensing in the LMC with the Pixel Method II. Selection of possible microlensing events

We apply the pixel method of analysis (sometimes called ``pixel lensing'') to a small subset of the EROS-1 microlensing observations of the bar of the Large Magellanic Cloud (LMC). The pixel method is designed to find microlensing events of…

Astrophysics · Physics 2007-05-23 A. -L. Melchior et al

Photometric evolution of the 2016 outburst of recurrent Nova LMC 1968: the first three weeks

Optical (BVRI) photometry of the first three weeks of the 2016 outburst of the recurrent Nova LMC 1968 is presented and discussed. The 2016 I-band light-curve is an exact replica, even in the most minute details, of that for the 2010…

Solar and Stellar Astrophysics · Physics 2016-03-09 U. Munari , F. M. Walter , F. -J. Hambsch , A. Frigo

SDSS1133: An Unusually Persistent Transient in a Nearby Dwarf Galaxy

While performing a survey to detect recoiling supermassive black holes, we have identified an unusual source having a projected offset of 800 pc from a nearby dwarf galaxy. The object, SDSS J113323.97+550415.8, exhibits broad emission lines…

Astrophysics of Galaxies · Physics 2015-06-18 Michael Koss , Laura Blecha , Richard Mushotzky , Chao Ling Hung , Sylvain Veilleux , Benny Trakhtenbrot , Kevin Schawinski , Daniel Stern , Nathan Smith , Yanxia Li , Allison Man , Alexei V. Filippenko , Jon C. Mauerhan , Kris Stanek , David Sanders

OGLE-2008-BLG-510: first automated real-time detection of a weak microlensing anomaly - brown dwarf or stellar binary?

The microlensing event OGLE-2008-BLG-510 is characterised by an evident asymmetric shape of the peak, promptly detected by the ARTEMiS system in real time. The skewness of the light curve appears to be compatible both with binary-lens and…

Earth and Planetary Astrophysics · Physics 2015-06-04 V. Bozza , M. Dominik , N. J. Rattenbury , U. G. Joergensen , Y. Tsapras , D. M. Bramich , A. Udalski , I. A. Bond , C. Liebig , A. Cassan , P. Fouque , A. Fukui , M. Hundertmark , I. -G. Shin , S. H. Lee , J. -Y. Choi , S. -Y. Park , A. Gould , A. Allan , S. Mao , L. Wyrzykowski , R. A. Street , D. Buckley , T. Nagayama , M. Mathiasen , T. C. Hinse , S. Calchi Novati , K. Harpsoee , L. Mancini , G. Scarpetta , T. Anguita , M. J. Burgdorf , K. Horne , A. Hornstrup , N. Kains , E. Kerins , P. Kjaergaard , G. Masi , S. Rahvar , D. Ricci , C. Snodgrass , J. Southworth , I. A. Steele , J. Surdej , C. C. Thoene , J. Wambsganss , M. Zub , M. D. Albrow , V. Batista , J. -P. Beaulieu , D. P. Bennett , J. A. R. Caldwell , A Cole , K. H. Cook , C. Coutures , S. Dieters , D. Dominis Prester , J. Donatowicz , J. Greenhill , S. R. Kane , D. Kubas , J. -B. Marquette , R. Martin , J. Menzies , K. R. Pollard , K. C. Sahu , A. Williams , M. K. Szymanski , M. Kubiak , G. Pietrzynski , I. Soszynski , R. Poleski , K. Ulaczyk , D. L. DePoy , S. Dong , C. Han , J. Janczak , C. -U. Lee , R. W. Pogge , F. Abe , K. Furusawa , J. B. Hearnshaw , Y. Itow , P. M. Kilmartin , A. V. Korpela , W. Lin , C. H. Ling , K. Masuda , Y. Matsubara , N. Miyake , Y. Muraki , K. Ohnishi , Y. C. Perrott , To. Saito , L. Skuljan , D. J. Sullivan , T. Sumi , D. Suzuki , W. L. Sweatman , P. J. Tristram , K. Wada , P. C. M. Yock , A. Gulbis , Y. Hashimoto , A. Kniazev , P. Vaisanen

Direct evidence for shock-powered optical emission in a nova

Classical novae are thermonuclear explosions that occur on the surfaces of white dwarf stars in interacting binary systems (Bode & Evans 2008). It has long been thought that the luminosity of classical novae is powered by continued nuclear…

High Energy Astrophysical Phenomena · Physics 2020-04-14 Elias Aydi , Kirill V. Sokolovsky , Laura Chomiuk , Elad Steinberg , Kwan Lok Li , Indrek Vurm , Brian D. Metzger , Jay Strader , Koji Mukai , Ondřej Pejcha , Ken J. Shen , Gregg A. Wade , Rainer Kuschnig , Anthony F. J. Moffat , Herbert Pablo , Andrzej Pigulski , Adam Popowicz , Werner Weiss , Konstanze Zwintz , Luca Izzo , Karen R. Pollard , Gerald Handler , Stuart D. Ryder , Miroslav D. Filipović , Rami Z. E. Alsaberi , Perica Manojlović , Raimundo Lopes de Oliveira , Frederick M. Walter , Patrick J. Vallely , David A. H. Buckley , Michael J. I. Brown , Eamonn J. Harvey , Adam Kawash , Alexei Kniazev , Christopher S. Kochanek , Justin Linford , Joanna Mikolajewska , Paolo Molaro , Marina Orio , Kim L. Page , Benjamin J. Shappee , Jennifer L. Sokoloski

Microlensing towards the LMC: self lensing for OGLE-II and OGLE-III

We present an analysis of the results of the OGLE-III microlensing campaign towards the Large Magellanic Cloud (LMC). We evaluate for all the possible lens populations along the line of sight the expected microlensing quantities, number of…

Astrophysics of Galaxies · Physics 2011-09-27 S. Calchi Novati , L. Mancini

Galactic Bulge Microlensing Events with Clump Giants as Sources

We present preliminary results of the analysis of 5 years of MACHO data on the Galactic bulge microlensing events with clump giants as sources. In particular, we discuss: 1) the selection of `giant' events, 2) distribution of impact…

Astrophysics · Physics 2007-05-23 P. Popowski , C. Alcock , R. A. Allsman , D. R. Alves , T. S. Axelrod , A. C. Becker , D. P. Bennett , K. H. Cook , A. J. Drake , K. C. Freeman , M. Geha , K. Griest , M. J. Lehner , S. L. Marshall , D. Minniti , C. A. Nelson , B. A. Peterson , M. R. Pratt , P. J. Quinn , C. W. Stubbs , W. Sutherland , A. B. Tomaney , T. Vandehei , D. Welch

Potential Direct Single-Star Mass Measurement

We analyze the lightcurve of the microlensing event OGLE-2003-BLG-175/MOA-2003-BLG-45 and show that it has two properties that, when combined with future high resolution astrometry, could lead to a direct, accurate measurement of the lens…

Astrophysics · Physics 2009-11-10 H. Ghosh

What is the nature of GW230529? An exploration of the gravitational lensing hypothesis

On the 29th of May 2023, the LIGO-Virgo-KAGRA Collaboration observed a compact binary coalescence event consistent with a neutron star-black hole merger, though the heavier object of mass 2.5-4.5 $M_\odot$ would fall into the purported…

General Relativity and Quantum Cosmology · Physics 2025-06-27 Justin Janquart , David Keitel , Rico K. L. Lo , Juno C. L. Chan , Jose Marìa Ezquiaga , Otto A. Hannuksela , Alvin K. Y. Li , Anupreeta More , Hemantakumar Phurailatpam , Neha Singh , Laura E. Uronen , Mick Wright , Naresh Adhikari , Sylvia Biscoveanu , Tomasz Bulik , Amanda M. Farah , Anna Heffernan , Prathamesh Joshi , Vincent Juste , Atul Kedia , Shania A. Nichols , Geraint Pratten , C. Rawcliffe , Soumen Roy , Elise M. Sänger , Hui Tong , M. Trevor , Luka Vujeva , Michael Zevin

A Search for Stellar-Mass Black Holes via Astrometric Microlensing

While dozens of stellar mass black holes have been discovered in binary systems, isolated black holes have eluded detection. Their presence can be inferred when they lens light from a background star. We attempt to detect the astrometric…

Solar and Stellar Astrophysics · Physics 2016-10-19 J. R. Lu , E. Sinukoff , E. O. Ofek , A. Udalski , S. Kozlowski

The OGLE-III planet detection efficiency from six years of microlensing observations (2003 to 2008)

We use six years (2003 to 2008) of Optical Gravitational Lensing Experiment III microlensing observations to derive the survey detection efficiency for a range of planetary masses and projected distances from the host star. We perform an…

Earth and Planetary Astrophysics · Physics 2016-02-09 Y. Tsapras , M. Hundertmark , Ł. Wyrzykowski , K. Horne , A. Udalski , C. Snodgrass , R. Street , D. M. Bramich , M. Dominik , V. Bozza , R. Figuera Jaimes , N. Kains , J. Skowron , M. K. Szymański , G. Pietrzyński , I. Soszyński , K. Ulaczyk , S. Kozłowski , P. Pietrukowicz , R. Poleski

Characterizing Lenses and Lensed Stars of High-Magnification Single-lens Gravitational Microlensing Events With Lenses Passing Over Source Stars

We present the analysis of the light curves of 9 high-magnification single-lens gravitational microlensing events with lenses passing over source stars, including OGLE-2004-BLG-254, MOA-2007-BLG-176, MOA-2007-BLG-233/OGLE-2007-BLG-302,…

Solar and Stellar Astrophysics · Physics 2015-06-03 J. -Y. Choi , I. -G. Shin , S. -Y. Park , C. Han , A. Gould , T. Sumi , A. Udalski , J. -P. Beaulieu , R. Street , M. Dominik , W. Allen , L. A. Almeida , M. Bos , G. W. Christie , D. L. Depoy , S. Dong , J. Drummond , A. Gal-Yam , B. S. Gaudi , C. B. Henderson , L. -W. Hung , F. Jablonski , J. Janczak , C. -U. Lee , F. Mallia , A. Maury , J. McCormick , D. McGregor , L. A. G. Monard , D. Moorhouse , J. A. Muñoz , T. Natusch , C. Nelson , B. -G. Park , R. W. Pogge , T. -G. "TG" Tan , G. Thornley , J. C. Yee , F. Abe , E. Barnard , J. Baudry , D. P. Bennett , I. A. Bond , C. S. Botzler , M. Freeman , A. Fukui , K. Furusawa , F. Hayashi , J. B. Hearnshaw , S. Hosaka , Y. Itow , K. Kamiya , P. M. Kilmartin , S. Kobara , A. Korpela , W. Lin , C. H. Ling , S. Makita , K. Masuda , Y. Matsubara , N. Miyake , Y. Muraki , M. Nagaya , K. Nishimoto , K. Ohnishi , T. Okumura , K. Omori , Y. C. Perrott , N. Rattenbury , To. Saito , L. Skuljan , D. J. Sullivan , D. Suzuki , K. Suzuki , W. L. Sweatman , S. Takino , P. J. Tristram , K. Wada , P. C. M. Yock , M. K. Szymański , M. Kubiak , G. Pietrzyński , I. Soszyński , R. Poleski , K. Ulaczyk , Ł. Wyrzykowski , S. Kozłowski , P. Pietrukowicz , M. D. Albrow , E. Bachelet , V. Batista , C. S. Bennett , R. Bowens-Rubin , S. Brillant , A. Cassan , A. Cole , E. Corrales , Ch. Coutures , S. Dieters , D. Dominis Prester , J. Donatowicz , P. Fouqué , J. Greenhill , S. R. Kane , J. Menzies , K. C. Sahu , J. Wambsganss , A. Williams , M. Zub , A. Allan , D. M. Bramich , P. Browne , N. Clay , S. Fraser , K. Horne , N. Kains , C. Mottram , C. Snodgrass , I. Steele , Y. Tsapras , K. A. Alsubai , V. Bozza , M. J. Burgdorf , S. Calchi Novati , P. Dodds , S. Dreizler , F. Finet , T. Gerner , M. Glitrup , F. Grundahl , S. Hardis , K. Harpsøe , T. C. Hinse , M. Hundertmark , U. G. Jørgensen , E. Kerins , C. Liebig , G. Maier , L. Mancini , M. Mathiasen , M. T. Penny , S. Proft , S. Rahvar , D. Ricci , G. Scarpetta , S. Schäfer , F. Schönebeck , J. Skottfelt , J. Surdej , J. Southworth , F. Zimmer

Evidence of Halo Microlensing in M31

We report results from intensive monitoring of two fields on either side of M31,emphasizing microlensing involving stars and masses in M31. These results stem from the three-year VATT/Columbia survey of variability on 3d to 2m timescales.…

Astrophysics · Physics 2009-11-10 Robert R. Uglesich , Arlin P. S. Crotts , Edward A. Baltz , Jelte T. A. de Jong , Richard P. Boyle , Christopher J. Corbally

A remarkable recurrent nova in M31 - The optical observations

Context: In late November 2013 a fifth eruption in five years of the M31 recurrent nova M31N 2008-12a was announced. Aims: In this Letter we address the optical lightcurve and progenitor system of M31N 2008-12a. Methods: Optical imaging…

Solar and Stellar Astrophysics · Physics 2015-06-18 M. J. Darnley , S. C. Williams , M. F. Bode , M. Henze , J. -U. Ness , A. W. Shafter , K. Hornoch , V. Votruba

Microlensing optical depth and event rate toward the Large Magellanic Cloud based on 20 years of OGLE observations

Measurements of the microlensing optical depth and event rate toward the Large Magellanic Cloud (LMC) can be used to probe the distribution and mass function of compact objects in the direction toward that galaxy - in the Milky Way disk,…

Astrophysics of Galaxies · Physics 2024-06-26 P. Mroz , A. Udalski , M. K. Szymanski , M. Kapusta , I. Soszynski , L. Wyrzykowski , P. Pietrukowicz , S. Kozlowski , R. Poleski , J. Skowron , D. Skowron , K. Ulaczyk , M. Gromadzki , K. Rybicki , P. Iwanek , M. Wrona , M. Ratajczak

OGLE-2018-BLG-0022: First Prediction of an Astrometric Microlensing Signal from a Photometric Microlensing Event

In this work, we present the analysis of the binary microlensing event OGLE-2018-BLG-0022 that is detected toward the Galactic bulge field. The dense and continuous coverage with the high-quality photometry data from ground-based…

Solar and Stellar Astrophysics · Physics 2019-05-15 Cheongho Han , Ian A. Bond , Andrzej Udalski , Sebastiano Calchi Novati , Andrew Gould , Valerio Bozza , Yuki Hirao , Arnaud Cassan , Michael D. Albrow , Sun-Ju Chung , Kyu-Ha Hwang , Chung-Uk Lee , Yoon-Hyun Ryu , In-Gu Shin , Yossi Shvartzvald , Jennifer C. Yee , Youn Kil Jung , Doeon Kim , Woong-Tae Kim Sang-Mok Cha , Dong-Jin Kim , Hyoun-Woo Kim , Seung-Lee Kim , Dong-Joo Lee , Yongseok Lee , Byeong-Gon Park , Richard W. Pogge , Weicheng Zang , Fumio Abe , Richard Barry , David P. Bennett , Aparna Bhattacharya , Martin Donachie , Akihiko Fukui , Yoshitaka Itow , Kohei Kawasaki , Iona Kondo , Naoki Koshimoto , Man Cheung Alex Li , Yutaka Matsubara , Yasushi Muraki , Shota Miyazaki , Masayuki Nagakane , Clément Ranc , Nicholas J. Rattenbury , Haruno Suematsu , Denis J. Sullivan , Takahiro Sumi , Daisuke Suzuki , Paul J. Tristram , Atsunori Yonehara , Przemek Mróz , Michał K. Szymański , Jan Skowron , Radek Poleski , Igor Soszyński , Paweł Pietrukowicz , Szymon Kozłowski , Krzysztof Ulaczyk , Krzysztof A. Rybicki , Patryk Iwanek , Marcin Wrona , Charles A. Beichman , Geoffery Bryden , Sean Carey , B. Scott Gaudi , Calen B. Henderson