Results 41 to 50 of about 9,232,537 (75)

ASTROMETRIC MICROLENSING BY LOCAL DARK MATTER SUBHALOS [PDF]

open access: yes, 2011
High-resolution N-body simulations of dark matter halos indicate that the Milky Way contains numerous subhalos. When a dark matter subhalo passes in front of a star, the light from that star will be deflected by gravitational lensing, leading to a small ...
Adrienne L. Erickcek   +3 more
core   +1 more source

Expectations on mass determination using astrometric microlensing by

open access: yes, 2020
Context. Astrometric gravitational microlensing can be used to determine the mass of a single star (the lens) with an accuracy of a few percent. To do so, precise measurements of the angular separations between lens and background star with an accuracy ...
J. Wambsganss, J. Klüter, U. Bastian
core   +1 more source

A low-mass planet candidate orbiting Proxima Centauri at a distance of 1.5 AU. [PDF]

open access: yesSci Adv, 2020
Damasso M   +21 more
europepmc   +1 more source

Determination of the mass of nearby stars from astrometric microlensing observations [PDF]

open access: yes, 2001
The possibility of determining, with a precision of 10%, the mass of bright, nearby stars by means of astrometric microlensing observations is investigated in the context of the future ground-based and spaceborne high precision astrometric instruments ...
Surdej, Jean   +2 more
core   +1 more source

Astrometric microlensing of quasars : dependence on surface mass density and external shear

open access: yes, 2004
A small fraction of all quasars are strongly lensed and multiply imaged, with usually a galaxy acting as the main lens. Some, or maybe all of these quasars are also affected by microlensing, the effect of stellar mass objects in the lensing galaxy ...
Wambsganss, Joachim, Treyer, A.
core  

Exoplanet Biosignatures: Observational Prospects. [PDF]

open access: yesAstrobiology, 2018
Fujii Y   +11 more
europepmc   +1 more source

Astrometric microlensing probes of the isolated neutron star population with

open access: yes
Context. Notoriously hard to detect and study, isolated neutron stars (NSs) might provide valuable answers to fundamental questions about stellar evolution and explosion physics.
P. McGill   +4 more
core   +1 more source

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