Results 41 to 50 of about 5,260 (217)

Microlensing of circumstellar envelopes: II. emission lines from radial and azimuthal flow during fold caustic crossings [PDF]

open access: yes, 2003
This paper examines the line profile evolution due to bulk motion in circumstellar envelopes during microlensing fold caustic crossing events. These events have recently been shown to be a sensitive probe of stellar surface brightness profiles, thus ...
Bryce, H.M.   +5 more
core   +1 more source

OGLE 2008–BLG–290 : an accurate measurement of the limb darkening of a galactic bulge K giant spatially resolved by microlensing [PDF]

open access: yes, 2010
Context. Not only is gravitational microlensing a successful tool for discovering distant exoplanets, but it also enables characterization of the lens and source stars involved in the lensing event. Aims.
Riffeser, A.   +562 more
core   +1 more source

The polarisation signatures of microlensing [PDF]

open access: yesNew Astronomy Reviews, 1998
It has already been shown that microlensing can give rise to a non-zero variable polarisation signal. Here we use realistic simulations to demonstrate the additional information that can be gained from polarimetric observations of lensing events.
Newsam, A. M.   +3 more
openaire   +2 more sources

MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection [PDF]

open access: yes, 2012
peer reviewedWe analyze MOA-2010-BLG-311, a high magnification (A_max>600) microlensing event with complete data coverage over the peak, making it very sensitive to planetary signals.
Southworth, J.   +476 more
core   +1 more source

PUZLE Microlensing Catalogs

open access: yes, 2021
The Pipeline Utility for ZTF Lensing Events (PUZLE) is a pipeline designed to find microlensing events observed by the Zwicky Transient Facility. These two catalogs represent the products of this pipeline.
Medford, Michael
core   +1 more source

Microlensing by stars

open access: yesThe Astrophysical Journal, 1995
If stars at the lower end of the main sequence are responsible for the microlensing events observed in the Galactic bulge, then light from the lensing star contributes to the observed brightness. The background and lensing stars generally have different colors, and the relative brightness changes during the microlensing event.
openaire   +2 more sources

Microlensing by the galactic bar

open access: yesThe Astrophysical Journal, 1995
We compute the predicted optical depth and duration distribution of microlensing events towards Baade's window in a model composed of a Galactic disk and a bar. The bar model is a self-consistent dynamical model built out of individual orbits that has been populated to be consistent with the COBE maps of the Galaxy and kinematic observations of the ...
Zhao, HongSheng   +2 more
openaire   +2 more sources

Infrared-radio-follow-up observations for detection of the magnetic radio emission of extra solar planets: a new window to detect exoplanets

open access: yesFrontiers in Astronomy and Space Sciences
There are several methods for indirectly detecting exoplanets, such as transit, radial velocity, astrometry, and the conventional gravitational microlensing approach.
Fatemeh Bagheri   +4 more
doaj   +1 more source

New Constraints on Quasar Broad Absorption and Emission Line Regions from Gravitational Microlensing

open access: yesFrontiers in Astronomy and Space Sciences, 2017
Gravitational microlensing is a powerful tool allowing one to probe the structure of quasars on sub-parsec scale. We report recent results, focusing on the broad absorption and emission line regions.
Damien Hutsemékers   +4 more
doaj   +1 more source

Stellar Microlensing Surveys as a Probe of Primordial Black Holes: Status and Prospects

open access: yesUniverse
Stellar microlensing surveys are a powerful tool for probing dark matter in the form of planetary and stellar mass compact objects (COs) in particular primordial black holes (PBHs). Under standard assumptions, current observations exclude COs in the mass
Anne M. Green
doaj   +1 more source

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