Results 81 to 90 of about 121 (107)

Gravitational Lensing in Astronomy. [PDF]

open access: yesLiving Rev Relativ, 1998
Wambsganss J.
europepmc   +1 more source

Recent Developments in Optofluidic Lens Technology. [PDF]

open access: yesMicromachines (Basel), 2016
Mishra K, van den Ende D, Mugele F.
europepmc   +1 more source
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A parallax effect due to gravitational micro-lensing

Nature, 1986
The astrophysical importance of gravitational micro-lensing due to stars in the deflecting galaxy is now well-known1–7. Each macro-image (caused by the corresponding smoothed-out galaxy) can be split up into several micro-images with typical angular distances measured in micro-arcseconds.
S Refsdal, R Kayser
exaly   +2 more sources

Gravitational micro-lensing of the relativistic jets of quasars

Nature, 1991
GRAVITATIONAL microlensing of quasars has been invoked to account for their observed optical variability1–3—the timescale being as short as a few years for microlenses the size of Jupiter moving at ~300 km s−1 (ref. 4). But some blazars (conspicuously active quasars) show ultra-rapid variability on timescales as short as 1 hour in the optical5–7 and 1 ...
null Gopal-Krishna   +1 more
openaire   +1 more source

Gravitational lensing: From micro to nano

New Astronomy Reviews, 2009
Abstract Different regimes of gravitational lensing depend on lens masses and roughly correspond to angular distance between images. If a gravitational lens has a typical stellar mass, this regime is named a microlensing because a typical angular distance between images is about microarcseconds in the case when sources and lenses are located at ...
openaire   +1 more source

Gravitational Micro-Lensing as a Clue to Quasar Structure

1988
We discuss the possibilities of determining the one-dimensional intrinsic luminosity profile of a quasar which is affected by gravitational micro-lensing (lensing of stars in a distant galaxy). When the source crosses a critical curve (Jacobian of the lens mapping vanishes, i.e. anti-caustic) due to relative transverse motion, a typical asymmetric peak
B. Grieger, R. Kayser, S. Refsdal
openaire   +1 more source

Gravitational Micro-lensing Effects and Astrophysical Applications

Publications of the Astronomical Society of Australia, 1991
AbstractThe most favourable methods of observing the phenomenon of gravitational lensing are through high-amplification events and the time delay between the images. These effects provide us with the information to determine the Hubble parameter and the matter distribution in the universe.
openaire   +1 more source

A memory-based gravitational search algorithm for solving economic dispatch problem in micro-grid

Ain Shams Engineering Journal, 2021
Saad Mekhilef, Ibrahim Alhamrouni
exaly  

Review of micro propulsion technology for space gravitational waves detection

Acta Astronautica, 2022
Ming Zeng, Hui Liu, Ming Zeng
exaly  

The Influence of On-Orbit Micro-Vibration on Space Gravitational Wave Detection

Photonics, 2023
Chao Fang, Changxiang Yan, Zhiwei Chen
exaly  

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