Results 41 to 50 of about 10,420 (207)
Microlensing by Cosmic Strings [PDF]
, 2007 We consider the signature and detectability of gravitational microlensing of distant quasars by cosmic strings. Because of the simple image configuration such events will have a characteristic light curve, in which a source would appear to brighten by ...
Konrad Kuijken +7 more
core +4 more sources
Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018 Nonsingular Ayon‐Beato‐Garcia (ABG) spherically symmetric static black hole (BH) with charge to mass ratio q = g/2m is metric solution of Born Infeld nonlinear Maxwell‐Einstein theory. Central region of the BH behaves as (anti‐)de Sitter for (|q | > 1) | q | < 1.
H. Ghaffarnejad +3 more
wiley +1 more source
Higher order corrections in gravitational microlensing [PDF]
Physics Letters A, 1999 We show that, in cosmological microlensing, corrections of order $v/c \sim / $, 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.
CAPOZZIELLO, SALVATORE +3 more
openaire +4 more sources
Bose‐Einstein Condensate Dark Matter Halos Confronted with Galactic Rotation Curves
Advances in High Energy Physics, Volume 2017, Issue 1, 2017., 2017 We present a comparative confrontation of both the Bose‐Einstein Condensate (BEC) and the Navarro‐Frenk‐White (NFW) dark halo models with galactic rotation curves. We employ 6 High Surface Brightness (HSB), 6 Low Surface Brightness (LSB), and 7 dwarf galaxies with rotation curves falling into two classes.
M. Dwornik +4 more
wiley +1 more source
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.
Damien Hutsemékers +4 more
doaj +1 more source
Advances in Astronomy, Volume 2015, Issue 1, 2015., 2015 In recent years free‐floating planets (FFPs) have drawn a great interest among astrophysicists. Gravitational microlensing is a unique and exclusive method for their investigation which may allow obtaining precious information about their mass and spatial distribution.
Lindita Hamolli +4 more
wiley +1 more source
Gravitational Microlensing near Caustics. II. Cusps [PDF]
The Astrophysical Journal, 2002 52 pages, 12 figures. Revised version, minor changes. Accepted to ApJ, to appear in the November 20, 2002 issue (v580).
Gaudi, B. Scott, Petters, A. O.
openaire +2 more sources
The Microlensing Planet Finder: Completing the Census of Extrasolar Planets in the Milky Way
, 2004 The Microlensing Planet Finder (MPF) is a proposed Discovery mission that will complete the first census of extrasolar planets with sensitivity to planets like those in our own solar system.
+24 more
core +1 more source
Advances in Astronomy, Volume 2014, Issue 1, 2014., 2014 The perturbation caused by planet‐moon binarity on the time‐of‐arrival (TOA) signal of a pulsar with an orbiting planet is derived for the case of the orbit of the planet‐moon system inclined of an angle α with respect to the plane of the orbit of the planet‐moon barycenter around the pulsar.
Antonio Pasqua +2 more
wiley +1 more source
Two Micron‐Size Dark Dimensions
Fortschritte der Physik, Volume 73, Issue 8, August 2025.Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui +2 more
wiley +1 more source