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Repeating microlensing events in the OGLE data
J. Skowron, L. Wyrzykowski, S. Mao +1
Microlensing events are usually selected among single-peaked non-repeating light curves in order to avoid confusion with variable stars. However, a microlensing event may exhibit a…
OGLE-2005-BLG-071Lb, the Most Massive M-Dwarf Planetary Companion?
Subo Dong, Andrew Gould, Andrzej Udalski +81
We combine all available information to constrain the nature of OGLE-2005-BLG-071Lb, the second planet discovered by microlensing and the first in a high-magnification event. These…
Binary Lenses in OGLE III EWS Database. Season 2005
J. Skowron, M. Jaroszynski, A. Udalski +7
We present nine new binary lens candidates from OGLE-III Early Warning System database for the season of 2005. We have also found four events interpreted as single mass lensing of…
Binary Lenses in OGLE-III EWS Database. Season 2004
M. Jaroszynski, J. Skowron, A. Udalski +7
We present 19 binary lens candidates from OGLE-III Early Warning System database for the season of 2004. We have also found five events interpreted as single mass lensing of double…
Cluster AgeS Experiment (CASE): Dwarf Novae and a Probable Microlensing Event in the Globular Cluster M22
P. Pietrukowicz, J. Kaluzny, I. B. Thompson +4
We report the identification of a new cataclysmic variable (denoted as CV2) and a probable microlensing event in the field of the globular cluster M22. Two outbursts were observed…
Mass Estimates for Some of the Binary Lenses in OGLE III Database
M. Jaroszynski, A. Udalski, M. Kubiak +6
We model binary microlensing events OGLE 2003-BLG-170, 267, and 291. Source angular sizes are measured for the events 267 and 291. Model fits to the light curves give parallaxes fo…
A Jovian-mass Planet in Microlensing Event OGLE-2005-BLG-071
A. Udalski, M. Jaroszynski, B. Paczynski +30
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…
Binary Lenses in OGLE-III EWS Database. Seasons 2002--2003
M. Jaroszynski, A. Udalski, M. Kubiak +6
We present 15 binary lens candidates from OGLE-III Early Warning System database for seasons 2002-2003. We also found 15 events interpreted as single mass lensing of double sources…
OGLE 2003-BLG-235/MOA 2003-BLG-53: A planetary microlensing event
I. A. Bond, A. Udalski, M. Jaroszynski +29
We present observations of the unusual microlensing event OGLE 2003-BLG-235/MOA 2003-BLG-53. In this event a short duration (~7 days) low amplitude deviation in the light curve due…
A Possible Planetary Event OGLE-2002-BLG-055
M. Jaroszynski, B. Paczynski
The microlensing event OGLE-2002-BLG-055 has a single, but very reliable data point, deviating upward from a single source microlensing light curve by 0.6 mag. The simplest interpr…
Binary Lenses in OGLE-II 1997-1999 Database. A Preliminary Study
M. Jaroszynski
We present 18 binary lens candidates from OGLE-II database for seasons 1997-1999. The candidates have been selected by visual light curves inspection from the subsample of strong t…
Radiation Spectra of Advection Dominated Accretion Flows around Kerr Black Holes
A. Kurpiewski, M. Jaroszynski
We study the formation of the spectra in advection dominated accretion flows (ADAFs) around Kerr black holes. We use a Monte Carlo approach and fully general relativistic treatment…
Comptonization of photons in advection dominated accretion flows. Monte Carlo approach
A. Kurpiewski, M. Jaroszynski
We study the formation of the spectra in advection dominated accretion flows (ADAFs) around Kerr black holes. We use a Monte Carlo approach and fully general relativistic treatment…
Prospects for the Determination of Star Orbits Near the Galactic Center
M. Jaroszynski
We simulate the observations of proper motion of stars very close to the Galactic Center. We show that the speckle interferometry done with the Keck II telescope is accurate enough…
Relativistic effects in Proper Motions of Stars Surrounding the Galactic Center
M. Jaroszynski
We simulate the astrometric observations of stars moving close to the black hole in the Galactic Center. We show, that for orbits =<1000 AU and position measurements with the accur…
Hot tori around black holes as sources of gamma ray bursts
M. Jaroszynski
We investigate the configurations consisting of massive, dense and hot tori around stellar mass Kerr black holes as possible sources of energy for the gamma ray bursts in cosmologi…
DIFFRACTION EFFECTS IN MICROLENSING OF Q2237+0305
M. Jaroszynski, B. Paczynski
Geometrical optics provides an excellent description for quasar images crossing caustics which are formed by gravitational microlensing of objects like Q2237+0305. Within this appr…
The Cosmic Microwave Background Dipole as a Cosmological Effect
M. Jaroszynski, B. Paczynski
A conventional explanation of the dipole anisotropy of the cosmic microwave background (CMB) radiation is in terms of the Doppler effect: our galaxy is moving with respect to CMB f…