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

@article{Wyrzykowski2010TheOV,
  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},
  year={2010}
}
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★
In the third 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
Microlensing towards the Magellanic Clouds and M31: is the quest for MACHOs still open?
Microlensing is the tool of choice for the search and the analysis of compact halo objects ("MACHOs"), a still viable class of dark matter candidates at the galactic scale. Different analyses point
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
Microlensing towards the SMC: a new analysis of OGLE and EROS results
We present a new analysis of the results of the EROS-2, OGLE-II, and OGLE-III microlensing campaigns towards the Small Magellanic Cloud (SMC). Through a statistical analysis we address the issue of
New Self-lensing Models of the Small Magellanic Cloud: Can Gravitational Microlensing Detect Extragalactic Exoplanets?
We use three-dimensional distributions of classical Cepheids and RR~Lyrae stars in the Small Magellanic Cloud (SMC) to model the stellar density distribution of a young and old stellar population in
Using microlensed quasars to probe the structure of the Milky Way
This paper presents an investigation into the gravitational microlensing of quasars by stars and stellar remnants in the Milky Way. We present predictions for the all-sky microlensing optical depth,
25 Years of the Southern Skies Monitoring by OGLE
Abstract The Optical Gravitational Lensing Experiment (OGLE) started at Las Campanas Observatory in 1992 with a pilot monitoring programme of two million stars in the Galactic Bulge. It is still
OGLE-2005-BLG-018: Characterization of Full Physical and Orbital Parameters of a Gravitational Binary Lens
We present the result of the analysis of the gravitational binary-lensing event OGLE-2005-BLG-018. The light curve of the event is characterized by two adjacent strong features and a single weak
MICROLENSING EVENTS FROM THE 11 YEAR OBSERVATIONS OF THE WENDELSTEIN CALAR ALTO PIXELLENSING PROJECT
We present the results of the decade-long M31 observation from the Wendelstein Calar Alto Pixellensing Project (WeCAPP). WeCAPP has monitored M31 from 1997 until 2008 in both R- and I-filters, and
...
...

References

SHOWING 1-10 OF 34 REFERENCES
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
Discovery and characterization of a caustic crossing microlensing event in the small Magellanic cloud
We present photometric observations and analysis of the second microlensing event detected toward the Small Magellanic Cloud (SMC), MACHO Alert 98-SMC-1. This event was detected early enough to allow
The MACHO Project Large Magellanic Cloud Microlensing Results from the First Two Years and the Nature of the Galactic Dark Halo
The MACHO Project is a search for dark matter in the form of massive compact halo objects (MACHOs). Photometric monitoring of millions of stars in the Large Magellanic Cloud (LMC), Small Magellanic
Microlensing in the Small Magellanic Cloud: lessons from an N-body simulation
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
We report the discovery of a several-Jupiter mass planetary companion to the primary lens star in microlensing event OGLE-2005-BLG-071. Precise (<1%) photometry at the peak of the event yields an
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
...
...