Analytical Methods in Gravitational Microlensing
نویسندگان
چکیده
منابع مشابه
Introduction to Gravitational Microlensing
The basic concepts of gravitational microlensing are introduced. We start with the lens equation, and then derive the image positions and magnifications. The statistical quantities of optical depth and event rate are then described. We finish with a summary and a list of challenges and open questions. A problem set is given for students to practice. Gravitational microlensing (in the local grou...
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Twenty-one years after Bohdan’s seminal paper launched the field of gravitational microlensing, it has radically diversified from a method narrowly focused on finding dark matter to a very general astronomical tool. Microlensing has now detected 12 planets, including several that are inaccessible by other search methods. It has resolved the surfaces of distant stars, served as a magnifying glas...
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The MACHO project is searching for dark matter in the form of massive compact halo objects (Machos), by monitoring the brightness of millions of stars in the Magellanic Clouds to search for gravitational microlensing events. Analysis of our first 2.3 years of data for 8.5 million stars in the LMC yields 8 candidate microlensing events, well in excess of the ≈ 1 event expected from lensing by kn...
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ژورنال
عنوان ژورنال: ISRN Astronomy and Astrophysics
سال: 2012
ISSN: 2090-4746
DOI: 10.5402/2012/906951