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Exoplanetary searches with gravitational microlensing: Polarization issues


Zakharov, Alexander F; Ingrosso, Gabriele; De Paolis, Francesco; Nucita, Achille A; Strafella, Francesco; Calchi Novati, Sebastiano; Jetzer, Philippe (2014). Exoplanetary searches with gravitational microlensing: Polarization issues. Advances in Space Research, 54(7):1319-1325.

Abstract

There are different methods for finding exoplanets such as radial spectral shifts, astrometrical measurements, transits, timing etc. Gravitational microlensing (including pixel-lensing) is among the most promising techniques with the potentiality of detecting Earth-like planets at distances about a few astronomical units from their host star or near the so-called snow line with a temperature in the range 0-100 °C on a solid surface of an exoplanet. We emphasize the importance of polarization measurements which can help to resolve degeneracies in theoretical models. In particular, the polarization angle could give additional information about the relative position of the lens with respect to the source.

Abstract

There are different methods for finding exoplanets such as radial spectral shifts, astrometrical measurements, transits, timing etc. Gravitational microlensing (including pixel-lensing) is among the most promising techniques with the potentiality of detecting Earth-like planets at distances about a few astronomical units from their host star or near the so-called snow line with a temperature in the range 0-100 °C on a solid surface of an exoplanet. We emphasize the importance of polarization measurements which can help to resolve degeneracies in theoretical models. In particular, the polarization angle could give additional information about the relative position of the lens with respect to the source.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Aerospace Engineering
Physical Sciences > Astronomy and Astrophysics
Physical Sciences > Geophysics
Physical Sciences > Atmospheric Science
Physical Sciences > Space and Planetary Science
Physical Sciences > General Earth and Planetary Sciences
Language:English
Date:2014
Deposited On:24 Feb 2015 11:49
Last Modified:30 Jul 2020 17:21
Publisher:Pergamon Press
ISSN:0273-1177
OA Status:Green
Publisher DOI:https://doi.org/10.1016/j.asr.2013.12.013

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