Polarimetric Remote Sensing of Solar System Objects

Мищенко, М. И.; Rosenbush, V. K.; Kiselev, N. N.; Lupishko, D. F.; Тишковец, В. П.; Kaydash, V. G.; Belskaya, I. N.; Efimov, Y. S.; Shakhovskoy, N. M.

doi:10.48550/arxiv.1010.1171

Cited by 3 publications

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“…Note the difference between the Anderson localization scheme and the recurrent scattering mechanism shown in Fig. 6, because the latter takes place in the microscopic scale while the former occurs in the mesoscopic scale 16 .…”

Section: Anderson Localization Of Lightmentioning

confidence: 97%

“…The radiative properties entering the RTE, including the scattering coefficient κ s , absorption coefficient κ a and phase function P (Ω , Ω) (where Ω and Ω denote incident and scattered directions, respectively), depend on the microstructures as well as the permittivity and permeability of the composing materials. In particular, for disordered media consisting of discrete scatterers, i.e., discrete disordered media (DDM), the radiative properties are usually theoretically predicted under the independent scattering approximation (ISA), i.e., in which each discrete inclusion is assumed to scatter electromagnetic waves independently as if no other inclusions exist, i.e., without any inter-scatterer interference effects [12][13][14][15][16]. ISA is valid only when the scatterers are far-apart from each other (i.e., the far-field assumption) and no interparticle correlations exist (i.e., independent scatterers) [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…In particular, for disordered media consisting of discrete scatterers, i.e., discrete disordered media (DDM), the radiative properties are usually theoretically predicted under the independent scattering approximation (ISA), i.e., in which each discrete inclusion is assumed to scatter electromagnetic waves independently as if no other inclusions exist, i.e., without any inter-scatterer interference effects [12][13][14][15][16]. ISA is valid only when the scatterers are far-apart from each other (i.e., the far-field assumption) and no interparticle correlations exist (i.e., independent scatterers) [13][14][15][16][17]. When the two conditions are violated, the scattered waves from different scatterers interfere substantially and consequently, ISA fails [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

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The dependent scattering effect on radiative properties of micro/nanoscale discrete disordered media

Wang,

Zhao

2020

Preprint

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The dependent scattering effect (DSE), which arises from the wave nature of electromagnetic radiation, is a critical mechanism affecting the radiative properties of micro/nanoscale discrete disordered media (DDM). In the last a few decades, the approximate nature of radiative transfer equation (RTE) leads to a plethora of investigations of the DSE in various DDM, ranging from fluidized beds, photonic glass, colloidal suspensions and snow packs, etc. In this article, we give a general overview on the theoretical, numerical and experimental methods and progresses in the study of the DSE. We first present a summary of the multiple scattering theory of electromagnetic waves, including the analytic wave theory and Foldy-Lax equations, as well as its relationship with the RTE. Then we describe in detail the physical mechanisms that are critical to DSE and relevant theoretical considerations as well as numerical modeling methods. Experimental approaches to probe the radiative properties and relevant progresses in the experimental investigations of the DSE are also discussed. In addition, we give a brief review on the studies on the DSE and other relevant interference phenomena in mesoscopic physics and atomic physics, especially the coherent backscattering cone, Anderson localization, as well as the statistics and correlations in disordered media. We expect this review can provide profound and interdisciplinary insights to the understanding and manipulation of the DSE in disordered media for thermal engineering applications.

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Section: Anderson Localization Of Lightmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The dependent scattering effect on radiative properties of micro/nanoscale discrete disordered media

Wang,

Zhao

2020

Preprint

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“…A survey of the available observations showed that polarimetric observations of the Galilean satellites with high accuracy in different spectral bands in the opposition region (α 2°), as well as in the whole range of phase angles accessible for Jupiter satellites (α < 12°), are extremely rare, and the behavior of the negative polarization, including its wavelength dependence, is still unknown in detail. Besides, there is a large scatter in the data obtained by different authors (see, e.g., Mishchenko et al 2010;Rosenbush et al 2015).…”

Section: Objectives Of This Studymentioning

confidence: 99%

“…This means that the electric field vector component parallel to the scattering plane dominates the perpendicular component. The observed angular dependence of negative polarization for atmosphereless solar system bodies (ASSBs) and laboratory samples usually exhibits a negative polarization branch (NPB) that is almost parabolic with the minimum at approximately 5°− 15°, depending on the properties of the scattering surface (Geake & Geake 1990;Shkuratov et al 2002;Mishchenko et al 2010;Bagnulo et al 2011;Afanasiev et al 2014;Levasseur-Regourd et al 2015;Belskaya et al 2017). However, in some cases a strongly asymmetric NPB with the minimum centered at about 0°.5-2°i s observed.…”

Section: Characterizing the Europa Surfacementioning

confidence: 99%

New Polarimetric Data for the Galilean Satellites: Europa Observations and Modeling

et al. 2022

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This paper is dedicated to a long-standing problem of the shape of the negative branch of polarization (NBP) for Jupiter's moon Europa, determination of which is crucial for the characterization of the icy regolith on this satellite and similar objects, as well as for further progress in understanding light scattering by particulate surfaces. To establish the shape of Europa's NBP, in 2018–2021 we accomplished high-precision disk-integrated polarimetry of Europa in the UBVR I bands using the identical two-channel photoelectric polarimeters mounted on the 2.6 m Shajn reflector of the Crimean Astrophysical Observatory and the 2 m telescope of the Peak Terskol Observatory. We found that the polarization dependence on the phase angle in each filter is an asymmetric curve with a sharp polarization minimum P min ≈ − 0.3 % at phase angle α min ≤ 0 .° 4 , after which the polarization degree gradually increases to positive values, passing the inversion angle at α inv ≈ 6° − 7°. Within the error limits, the parameters P min, α min , and α inv of the NPB are independent of the wavelength in the visible spectrum. The polarization curve clearly demonstrates the so-called polarization opposition effect (POE). Our analysis of the previous and new polarimetric observations of Europa allows us to conclude that the POE is caused by coherent backscattering of sunlight on microscopic icy grains covering Europa’s surface. Computer modeling with the numerical radiative transfer coherent backscattering method demonstrates that the best fit to the polarimetric observations and geometric albedo of Europa is provided by a regolith layer of elementary single-scattering albedo ∼0.985 and extinction mean free path length 2π l/λ eff ≈ 150, λ eff representing the effective wavelength in the UBVR I spectral bands.

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Main Mechanisms of Celestial Bodies Negative Polarization Formation: A Review

Петров

2023

eps

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The scattered light by the vast majority of celestial bodies without atmospheres has a characteristic feature: A negative branch of linear polarization degree at little phase angles. Researchers have proposed many theoretical mechanisms to explain this feature. This review describes the main mechanisms that form a negative branch of linear polarization degree. The results of ground-based observations of the negative branch of the degree of linear polarization of various objects of the solar system are described. Scattering by single particles, shadow effect, coherent backscattering enhancement, and effects of the near field are considered. The review will be useful for all researchers studying the scattering of light by celestial bodies.

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Polarimetric Remote Sensing of Solar System Objects

Cited by 3 publications

References 0 publications

The dependent scattering effect on radiative properties of micro/nanoscale discrete disordered media

The dependent scattering effect on radiative properties of micro/nanoscale discrete disordered media

New Polarimetric Data for the Galilean Satellites: Europa Observations and Modeling

Main Mechanisms of Celestial Bodies Negative Polarization Formation: A Review

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