Results 1 to 10 of about 131 (117)
Gravitational Lensing: Strong, Weak and Micro [PDF]
Saas-Fee Advanced Course, 2006 Christopher Kochanek, Peter Schneider
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Some Remarks on Gravitational Micro-Lensing [PDF]
Symposium - International Astronomical Union, 1989 Gravitational micro-lensing can be used to obtain information 1) on the inner structure of active galactic nuclei and 2) on the distribution of compact masses in the range 10−4 … 102 solar masses. A regular monitoring of the most promising candidates for micro-lensing should be carried out.
Sjur Refsdal, Rainer Kayser
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Astrophysical Applications of Gravitational Micro-Lensing [PDF]
Symposium - International Astronomical Union, 1987 Gravitational micro-lensing due to stars in the deflecting galaxy influences the brightness and the spectra of the macro-images. Thus differences in the spectra of different macro-images are not automatically an argument against gravitational lensing. Furthermore changes in the spectra due to micro-lensing may give informations on the quasar structure.
R. Kayser +3 more
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Multi-wavelength study of the gravitational lens system RXS J1131-1231 [PDF]
Astronomy & Astrophysics, 2007 Accepted by Astronomy and Astrophysics.
Sluse, Dominique +3 more
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Binary Source Parallactic Effect in Gravitational Micro-lensing
, 1997 8 pages, latex, uses aaspp4.sty, 3 postscript figure, submitted to ApJ ...
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Since the pioneering detection of gravitational wave (GW) from a binary black hole merger by the LIGO-Virgo collaboration, GW has become a powerful probe for astrophysics and cosmology. If compact dark matter (DM) candidates, e.g. primordial black holes, contribute a substantial fraction of the DM component across a broad mass range, they would yield ...
Lin, Xin-Yi +5 more
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Some of the next articles are maybe not open access.
A parallax effect due to gravitational micro-lensing
Nature, 1986The 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
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Gravitational micro-lensing of the relativistic jets of quasars
Nature, 1991GRAVITATIONAL 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
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Gravitational lensing: From micro to nano
New Astronomy Reviews, 2009Abstract 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 ...
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Gravitational Micro-Lensing as a Clue to Quasar Structure
1988We 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
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