Results 1 to 10 of about 345 (162)
Frequency-shift in the gravitational microlensing [PDF]
Physical Review D, 2020 5 pages, 3 figures, accepted in Physical Review ...
Sohrab Rahvar
exaly +3 more sources
Strong Gravitational Lensing and Microlensing of Supernovae. [PDF]
Space Sci RevAbstractStrong gravitational lensing and microlensing of supernovae (SNe) are emerging as a new probe of cosmology and astrophysics in recent years. We provide an overview of this nascent research field, starting with a summary of the first discoveries of strongly lensed SNe. We describe the use of the time delays between multiple SN images as a way to
Suyu SH +4 more
europepmc +5 more sources
Higher order corrections in gravitational microlensing [PDF]
Physics Letters, Section A: General, Atomic and Solid State Physics, 1999 We show that, in cosmological microlensing, corrections of order $v/c \sim Δλ/λ$, to the deflection angle of light beams from a distant source are not negligible and that all microlensing quantities should be corrected up to this order independently of the cosmological model used.
Gaetano Lambiase +2 more
exaly +5 more sources
Signals, 2022 In this work, we provide a compressive sensing architecture for implementing on a space based observatory for detecting transient photometric parallax caused by gravitational microlensing events.
Tinoosh Mohsenin, Richard K Barry
exaly +3 more sources
Searching for the QCD Axion with Gravitational Microlensing [PDF]
Physical Review Letters, 2017 The phase transition responsible for axion dark matter production can create large amplitude isocurvature perturbations which collapse into dense objects known as axion miniclusters. We use microlensing data from the EROS survey, and from recent observations with the Subaru Hyper Suprime Cam to place constraints on the minicluster scenario.
David Marsh, Jeremie Quevillon
exaly +5 more sources
Gravitational wave detection through microlensing? [PDF]
Monthly Notices of the Royal Astronomical Society, 2003 It is shown that accurate photometric observations of a relatively high--magnification microlensing event ($A\gg 1$), occurring close to the line of sight of a gravitational wave (GW) source, represented by a binary star, can allow the detection of subtle gravitational effects.
Roberto Ragazzoni
exaly +3 more sources
New Constraints on Quasar Broad Absorption and Emission Line Regions from Gravitational Microlensing
Frontiers 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.
Dominique Sluse +2 more
exaly +3 more sources
Studies of relativistic effects with radioastron space mission [PDF]
Serbian Astronomical Journal, 2007 In the review we discuss possible studies of GR phenomena such as gravitational microlensing and shadow analysis with the forthcoming RadioAstron space mission.
Zakharov A.F.
doaj +1 more source
Gravitational microlensing and the galactic halo [PDF]
Physical Review D, 1996 By means of extensive galactic modeling we study the implications of the more than eighty microlensing events that have now been observed for the composition of the dark halo of the Galaxy, as well as for other properties of the Galaxy. We take the Galaxy to be comprised of luminous and dark disk components, a bulge, and a dark halo consisting of both ...
Gates, Evalyn I. +2 more
openaire +3 more sources
MOA-2020-BLG-208Lb: Cool Sub-Saturn-mass Planet within Predicted Desert
The Astronomical Journal, 2023 We analyze the MOA-2020-BLG-208 gravitational microlensing event and present the discovery and characterization of a new planet, MOA-2020-BLG-208Lb, with an estimated sub-Saturn mass.
Greg Olmschenk +82 more
doaj +1 more source