Results 11 to 20 of about 2,945,093 (131)

Constraints on compact dark matter from gravitational wave microlensing [PDF]

open access: yes, 2022
If a significant fraction of dark matter is in the form of compact objects, they will cause microlensing effects in the gravitational wave (GW) signals observable by LIGO and Virgo.
Ganguly, A.   +6 more
core   +3 more sources

The new frontiers of gravitational microlensing [PDF]

open access: yes, 2022
Albert Einstein referred to gravitational microlensing as a “most curious effect”, and while its underlying principles are intriguingly simple, their universality makes a powerful tool for inferring information about a wide range of astronomical bodies ...
Dominik, M.
core   +1 more source

Microlensing search for extra solar planets [PDF]

open access: yes, 2015
Gravitational microlensing may be used to probe distant stars for planetary companions. The presence of a planet in the vicinity of a star acting as the lens may cause a short lived anomaly in the observed lightcurve of the lensing event.
Tsapras, Yiannis
core   +2 more sources

Cloud-based e-Infrastructure for scheduling astronomical observations [PDF]

open access: yes, 2015
This research was pursued under the EPSRC grant ‘Working Together: Constraint Programming and Cloud Computing’ (EP/K015745/1) and an Amazon Web Services (AWS) Education Research Grant.Gravitational microlensing exploits a transient phenomenon where an ...
Barker, Adam David   +11 more
core   +1 more source

Microlensing for extrasolar planets : improving the photometry [PDF]

open access: yes, 2013
Gravitational Microlensing, as a technique for detecting Extrasolar Planets, is recognised for its potential in discovering small-mass planets similar to Earth, at a distance of a few Astronomical Units from their host stars.
Bajek, David J.
core   +2 more sources

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

Galactic microlensing : binary-lens light curve morphologies and results from the Rosetta spacecraft bulge survey [PDF]

open access: yes, 2014
For 20 years now, gravitational microlensing observations towards the Galactic bulge have provided us with a wealth of information about the stellar and planetary content of our Galaxy, which is inaccessible via other current methods.
Liebig, Christine Elisabeth
core   +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

Microlensing of circumstellar envelopes III. Line profiles from stellar winds in homologous expansion [PDF]

open access: yes, 2006
This paper examines line profile evolution due to the linear expansion of circumstellar material obsverved during a microlensing event. This work extends our previous papers on emission line profile evolution from radial and azimuthal flow during point ...
Bryce, H.M.   +8 more
core   +1 more source

Free-floating Planet Mass Function from MOA-II 9 yr Survey toward the Galactic Bulge

open access: yesThe Astronomical Journal, 2023
We present the first measurement of the mass function of free-floating planets (FFPs), or very wide orbit planets down to an Earth mass, from the MOA-II microlensing survey in 2006–2014.
Takahiro Sumi   +28 more
doaj   +1 more source

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