Results 91 to 100 of about 130 (112)
The Astrobiology Primer v2.0. [PDF]
Astrobiology, 2016 Domagal-Goldman SD +48 more
europepmc +1 more source
KMT-2021-BLG-1898: Planetary microlensing event involved with binary source stars
Astronomy and Astrophysics, 2022 Aims. The light curve of the microlensing event KMT-2021-BLG-1898 exhibits a short-term central anomaly with double-bump features that cannot be explained by the usual binary-lens or binary-source interpretations. With the aim of interpreting the anomaly, we analyze the lensing light curve under various sophisticated models. Methods.
Michael D Albrow
exaly +3 more sources
The effect of a binary source companion on the astrometric microlensing behaviour [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 If gravitational microlensing occurs in a binary-source system, both source components are magnified, and the resulting light curve deviates from the standard one of a single source event. However, in most cases only one source component is highly magnified and the other component (the companion) can be treated as a simple blending source: blending ...
Cheongho Han
exaly +3 more sources
Distinguishing between Binary‐Source and Planetary Microlensing Perturbations [PDF]
Astrophysical Journal, 1998 A planetary microlensing event is characterized by a short-lived perturbation to the standard microlensing curve. Planetary perturbations typically last from a few hours to a day, have maximum amplitudes, ?max, of ?5%-20% of the standard curve, and come in two classes: major and minor image perturbations.
B Scott Gaudi
exaly +3 more sources
Detection of exoplanet as a binary source of microlensing events in WFIRST survey [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 ABSTRACT We investigate the possibility of exoplanet detection orbiting source stars in microlensing events through WFIRST observations. We perform a Monte Carlo simulation on the detection rate of exoplanets via microlensing, assuming that each source star has at least one exoplanet.
Fatemeh Bagheri +2 more
exaly +3 more sources
PARALLAX AND ORBITAL EFFECTS IN ASTROMETRIC MICROLENSING WITH BINARY SOURCES [PDF]
Astrophysical Journal, 2016 ABSTRACT In gravitational microlensing, binary systems may act as lenses or sources. Identifying lens binarity is generally easy, in particular in events characterized by caustic crossing since the resulting light curve exhibits strong deviations from a smooth single-lensing light curve.
A A Nucita, F De Paolis, L Manni
exaly +4 more sources
Astrophysical Journal, 2002 An extra-solar planet can be detected by microlensing because the planet can perturb the smooth lensing light curve created by the primary lens. However, it was shown by Gaudi that a subset of binary-source events can produce light curves that closely resemble those produced by a significant fraction of planet/star lens systems, causing serious ...
Cheongho Han
exaly +3 more sources
Astrophysical Journal, 1992 If the dark matter in the Galactic halo consists of compact objects in the 10 −6 -10 2 M ⊙ mass range, it can be detected as it gravitationally microlenses stars in neighboring galaxies and the Galactic bulge. Though extremely rare, microlensing has several powerful signatures: the light curves follow a well-known function, are time symmetric, and ...
Kim Griest
exaly +2 more sources
Where are the binary source gravitational microlensing events? II [PDF]
Monthly Notices of the Royal Astronomical Society, 1998 10 pages, including 1 Table and 1 ...
Cheongho Han
exaly +3 more sources