A Critical review of theoretical models of negatively polarized light scattered by atmosphereless solar system bodies

Shkuratov, Yu. G.; Muinonen, K.; Bowell, E.; Lumme, K.; Peltoniemi, Jouni; Kreslavsky, M. A.; Stankevich, D. G.; Tishkovetz, V. P.; Opanasenko, N. V.; Melkumova, L. Ya.

doi:10.1007/bf00579535

Cited by 128 publications

(60 citation statements)

References 40 publications

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“…When comparing Lutetia polarimetric curve with laboratory powder of meteorites, only the carbonaceous chondrites, specially the CV3, show similar minimum of negative branch and inversion angle. Multiple hypothesis have been evoked to explain this phenomena (Shkuratov et al, 1994, for a review), but the shadow-hiding and coherent-backscattering seems to prevail as the main mechanisms (Shkuratov et al, 2002). The connection with such dark meteoritic composition should rule out the contribution of CBOE, since the mechanism is also connect to grain shape and size.…”

Section: Discussionmentioning

confidence: 99%

Asteroid (21) Lutetia: Disk-resolved photometric analysis of Baetica region

Hasselmann

Fornasier

Leyrat

et al. 2016

Icarus

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ABSTRACT. (21) Lutetia has been visited by Rosetta mission on July 2010 and observed with a phase angle ranging from 0.15 to 156.8 degrees. The Baetica region, located at the north pole has been extensively observed by OSIRIS cameras system. Baetica encompass a region called North Pole Crater Cluster (NPCC), shows a cluster of superposed craters which presents signs of variegation at the small phase angle images. For studying the location, we used 187 images distributed throughout 14 filter recorded by the NAC (Narrow Angle Camera) and WAC (Wide Angle Camera) of the OSIRIS system on-board Rosetta taken during the fly-by. Then, we photometrically modeled the region using Minnaert diskfunction and Akimov phase function to obtain a resolved spectral slope map at phase angles of 5 • and 20 • . We observed a dicothomy between Gallicum and Danuvius-Sarnus Labes in the NPCC, but no significant phase reddening (−0.04 ± 0.045% · microns −1 deg −1 ). In the next step, we applied the Hapke (2008Hapke ( ,2012 model for the NAC F82+F22 (649.2 nm), WAC F13 (375 nm) and WAC F17 (631.6 nm) and we obtained normal albedo maps and Hapke parameter maps for NAC F82+F22. On Baetica, at 649.2 nm, the geometric albedo is 0.205 ± 0.005, the average single-scattering albedo is 0.181 ± 0.005, the average asymmetric factor is −0.342 ± 0.003, the average shadow-hiding opposition effect amplitude and width are 0.824 ± 0.002 and 0.040 ± 0.0007, the average roughness slope is 11.45 • ± 3 • and the average porosity is 0.85 ± 0.002. We are unable to confirm the presence of coherent-backscattering mechanism. In the NPCC, the normal albedo variegation among the craters walls reach 8% brighter for Gallicum Labes and 2% fainter for Danuvius Labes. The Hapke parameter maps also show a dicothomy at the opposition effect coefficients, single-scattering albedo and asymmetric factor, that may be attributed to the maturation degree of the regolith or to compositonal variation. In addition, we compared the Hapke (2008Hapke ( , 2012 and Hapke (1993) parameters with laboratory samples and other small-solar system bodies visited by space missions.

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Section: Discussionmentioning

confidence: 99%

Asteroid (21) Lutetia: Disk-resolved photometric analysis of Baetica region

Hasselmann

Fornasier

Leyrat

et al. 2016

Icarus

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“…However, in the backscattering direction, dipole 1 contributes to the scattered radiation, which induces an increase in the intensity with respect to that in the α direction. (In this connection, we note that the geometric optics description of the shadowing effect leads to no negative polarization (Shkuratov et al, 1994;Shkuratov and Grynko, 2005) Contrary to the field inhomogeneity in the near zone, which is most noticeable for the wavelength-sized particles, the mutual shielding effect is independent of the sizes of the particles being in the near field.…”

Section: The Way the Near Field Affects The Scattering Characteristicsmentioning

confidence: 77%

“…Among the mechanisms proposed to explain the phase curves of the polarization of atmosphereless celestial bodies (see, e.g., the review by Shkuratov et al, 1994), the coherent backscattering mechanism (also known as weak photon localization) is most widely accepted. It induces a sharp increase of brightness near opposition by the constructive interference of waves scattered multiply inside the medium along direct and reverse trajectories (e.g., van Albada and Lagendijk, 1985;Wolf and Maret, 1985;Akkermans et al, 1986;Barabanenkov et al, 1991).…”

Section: Introductionmentioning

confidence: 99%

Interaction of particles in the near field and opposition effects in regolith-like surfaces

2009

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“…This effect is schematically explained in Fig. 3.2b (also see Shkuratov, 1989;Muinonen, 1990;Shkuratov et al, 1994;Mishchenko, 2008). Particles 1-4 are in the plane perpendicular to the direction of the incident nonpolarized light.…”

Section: Coherent Backscattering Effectmentioning

confidence: 92%