The OGLE View of Microlensing towards the Magellanic Clouds. II. OGLE-II SMC data

  title={The OGLE View of Microlensing towards the Magellanic Clouds. II. OGLE-II SMC data},
  author={Lukasz Wyrzykowski and Szymon Kozłowski and Jan Skowron and Vasily A Belokurov and M. Clare Smith and Andrzej Udalski and Michał K. Szymański and Marcin Kubiak and Grzegorz Pietrzyński and Igor Soszyński and Olaf Szewczyk},
  journal={arXiv: Astrophysics of Galaxies},
The primary goal of this paper is to provide the evidence that can either prove or falsify the hypothesis that dark matter in the Galactic halo can clump into stellar-mass compact objects. If such objects existed, they would act as lenses to external sources in the Magellanic Clouds, giving rise to an observable effect of microlensing. We present the results of our search for such events, based on the data from the second phase of the OGLE survey (1996-2000) towards the SMC. The data set we… 
The OGLE view of microlensing towards the Magellanic Clouds – IV. OGLE-III SMC data and final conclusions on MACHOs
In this fourth part of the series presenting the Optical Gravitational Lensing Experiment (OGLE) microlensing studies of the dark matter halo compact objects (MACHOs), we describe results of the
The OGLE view of microlensing towards the Magellanic Clouds – III. Ruling out subsolar MACHOs with the OGLE‐III LMC data★
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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
Microlensing towards the SMC: a new analysis of OGLE and EROS results
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The OGLE view of microlensing towards the Magellanic Clouds – I. A trickle of events in the OGLE‐II LMC data★
We present the results from the Optical Gravitational Lensing Experiment II (OGLE-II) survey (1996–2000) towards the Large Magellanic Cloud (LMC), which has the aim of detecting the microlensing
Reddening of Microlensed Large Magellanic Cloud Stars versus the Location of the Lenses
We propose an observational test that can break the indeterminacy of two main classes of microlensing models of the Magellanic Clouds: (a) the lenses are located in the Galactic halo, and (b) the
The MACHO Project: Microlensing Results from 5.7 Years of Large Magellanic Cloud Observations
We report on our search for microlensing toward the Large Magellanic Cloud (LMC). Analysis of 5.7 yr of photometry on 11.9 million stars in the LMC reveals 13-17 microlensing events. A detailed
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We analyse an N-body simulation of the Small Magellanic Cloud (SMC), that of Gardiner & Noguchi (1996) to determine its microlensing statistics. We find that the optical depth due to self-lensing in
Spectroscopy of MACHO 97-SMC-1: Self-Lensing within the Small Magellanic Cloud
More than a dozen microlensing events have been detected so far toward the LMC, and two have been detected toward the SMC. If all of the lenses are in the Galactic halo, both the LMC and the SMC
Evidence for gravitational microlensing by dark objects in the Galactic halo
THE flat rotation curves of spiral galaxies, including our own, indicate that they are surrounded by unseen haloes of ‘dark matter’1,2. In the absence of a massive halo, stars and gas in the outer
A Jovian-Mass Planet in Microlensing Event OGLE-2005-BLG-071
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The extreme microlensing event OGLE-2007-BLG-224: terrestrial parallax observation of a thick-disk brown dwarf
Parallax is the most fundamental technique for measuring distances to astronomical objects. Although terrestrial parallax was pioneered over 2000 years ago by Hipparchus (ca. 140 B.C.E.) to measure