Готові списки джерел за темами / Spectro-Polarimetric

Добірка наукової літератури з теми "Spectro-Polarimetric"

Автор: Grafiati
Опубліковано: 7 липня 2024

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Зміст

  1. Статті в журналах
  2. Дисертації
  3. Книги
  4. Частини книг
  5. Тези доповідей конференцій
  6. Звіти організацій

Статті в журналах з теми "Spectro-Polarimetric":

1

Rousselet-Perraut, K., C. Stehlé, J. B. Le Bouquin, S. Jankov, and F. Vakili. "Stellar polarimetry with SPIN (Spectro-Polarimetric INterferometry)." EAS Publications Series 9 (2003): 123. http://dx.doi.org/10.1051/eas:2003094.

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2

Smith, Craig H., Christopher M. Wright, David K. Aitken, and Patrick F. Roche. "Mid-infrared Observations of Magnetic Fields in the Disks of Bi-Polar Outflow Sources." International Astronomical Union Colloquium 163 (1997): 799–800. http://dx.doi.org/10.1017/s0252921100044067.

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AbstractWe present the results from mid-infrared spectro-polarimetric observations of a number of bi-polar outflow sources. The specto-polarimetric data provides information on the polarization mechanism and the magnetic field direction. The field direction in the disks of the observed sources is most often normal to the ambient field direction and lies in the plane of the disk, indicating a toroidal rather than poloidal field configuration.
3

van Noort, M. "Spatially coupled inversion of spectro-polarimetric image data." Astronomy & Astrophysics 548 (November 12, 2012): A5. http://dx.doi.org/10.1051/0004-6361/201220220.

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4

Boccaletti, Anthony, Anne-Lise Maire, Raphaël Galicher, Pierre Baudoz, Dimitri Mawet, John Trauger, Jean Schneider, et al. "SPICES: A Mission Concept to Characterize Long Period Planets from Giants to Super-Earths." Proceedings of the International Astronomical Union 8, S293 (August 2012): 429–34. http://dx.doi.org/10.1017/s1743921313013331.

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AbstractSPICES (Spectro-Polarimetric Imaging and Characterization of Exoplanetary Systems) was proposed in 2010 for a five-year M-class mission in the context of ESA Cosmic Vision. Its purpose is to image and characterize long-period extrasolar planets located at several AUs (0.5-10 AU) from nearby stars (<25 pc) with masses ranging from a few Jupiter masses down to super-Earths (~2 Earth radii, ~10 M⊕), possibly habitable. In addition, circumstellar disks as faint as a few times the zodiacal light in the Solar System can be studied. SPICES is based on a 1.5-m off-axis telescope and can perform spectro-polarimetric measurements in the visible (450 - 900 nm) at a spectral resolution of about 40. This paper summarizes the top science program and the choices made to conceive the instrument. The performance is illustrated for a few emblematic cases.
5

Jordan, Stefan. "Magnetic fields in White Dwarfs and their direct progenitors." Proceedings of the International Astronomical Union 4, S259 (November 2008): 369–78. http://dx.doi.org/10.1017/s1743921309030749.

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AbstractThe paper provides an overview on the results of the analyses of spectro-polarimetric observations of white dwarfs, subdwarfs, and central stars of planetary nebulae. It will also discuss the question of the origin of the magnetic fields in white dwarfs.
6

GAN Shi-qi, 甘世奇, 陈向宁 CHEN Xiang-ning, 刘鹏 LIU Peng, and 孙健 SUN Jian. "Transmittance spectrum in the liquid crystal spectro-polarimetric system." Chinese Journal of Liquid Crystals and Displays 32, no. 2 (2017): 97–103. http://dx.doi.org/10.3788/yjyxs20173202.0097.

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7

Lepera, E., C. Provenzano, P. Pagliusi, and G. Cipparrone. "Liquid Crystal Based Polarization Gratings for Spectro-Polarimetric Applications." Molecular Crystals and Liquid Crystals 558, no. 1 (May 30, 2012): 109–19. http://dx.doi.org/10.1080/15421406.2011.653716.

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8

Bommier, V., E. Landi Degl'Innocenti, M. Landolfi, and G. Molodij. "UNNOFIT inversion of spectro-polarimetric maps observed with THEMIS." Astronomy & Astrophysics 464, no. 1 (December 14, 2006): 323–39. http://dx.doi.org/10.1051/0004-6361:20054576.

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9

Boccaletti, Anthony, Jean Schneider, Wes Traub, Pierre-Olivier Lagage, Daphne Stam, Raffaele Gratton, John Trauger, et al. "SPICES: spectro-polarimetric imaging and characterization of exoplanetary systems." Experimental Astronomy 34, no. 2 (February 29, 2012): 355–84. http://dx.doi.org/10.1007/s10686-012-9290-5.

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10

Libbrecht, Tine, Jaime de la Cruz Rodríguez, Sanja Danilovic, Jorrit Leenaarts, and Hiva Pazira. "Chromospheric condensations and magnetic field in a C3.6-class flare studied via He I D3 spectro-polarimetry." Astronomy & Astrophysics 621 (January 2019): A35. http://dx.doi.org/10.1051/0004-6361/201833610.

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Context. Magnetic reconnection during flares takes place in the corona, but a substantial part of flare energy is deposited in the chromosphere. However, high-resolution spectro-polarimetric chromospheric observations of flares are very rare. The most used observables are Ca II 8542 Å and He I 10830 Å. Aims. We aim to study the chromosphere during a C3.6 class flare via spectro-polarimetric observations of the He I D3 line. Methods. We present the first SST/CRISP spectro-polarimetric observations of He I D3. We analyzed the data using the inversion code HAZEL, and estimate the line-of-sight velocity and the magnetic field vector. Results. Strong He I D3 emission at the flare footpoints, as well as strong He I D3 absorption profiles tracing the flaring loops are observed during the flare. The He I D3 traveling emission kernels at the flare footpoints exhibit strong chromospheric condensations of up to ∼60 km s−1 at their leading edge. Our observations suggest that such condensations result in shocking the deep chromosphere, causing broad and modestly blueshifted He I D3 profiles indicating subsequent upflows. A strong and rather vertical magnetic field of up to ∼2500 G is measured in the flare footpoints, confirming that the He I D3 line is likely formed in the deep chromosphere at those locations. We provide chromospheric line-of-sight velocity and magnetic field maps obtained via He I D3 inversions. We propose a fan-spine configuration as the flare magnetic field topology. Conclusions. The He I D3 line is an excellent diagnostic to study the chromosphere during flares. The impact of strong condensations on the deep chromosphere has been observed. Detailed maps of the flare dynamics and the magnetic field are obtained.
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Статті в журналах

Дисертації з теми "Spectro-Polarimetric":

1

Aleau, Killian. "Développement d’un diffusiomètre supercontinuum pour la caractérisation spectro-polarimétrique des aérosols : application au problème de l’inversion des données lidar." Electronic Thesis or Diss., Toulouse, ISAE, 2024. http://www.theses.fr/2024ESAE0022.

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Les propriétés radiatives des particules comme les aérosols est un domaine d’étude essentiel pour la télédétection optique, notamment pour les techniques lidar à rétrodiffusion élastique. Les propriétés radiatives en rétrodiffusion, comme le rapport de dépolarisation, sont particulièrement importantes pour inverser l’équation lidar et dériver des produits physiques d’une mesure lidar. L’objectif de ces travaux de thèse vise à développer une instrumentation de laboratoire dédiée à la mesure spectro-polarimétrique des paramètres radiatifs des aérosols tels que les poussières désertiques ou volcaniques. L’instrument, dénommé SOPHOS pour SpectrO-Polarimetric and HOlographic Scatterometer, permet de mesurer les propriétés de diffusion, dont la rétrodiffusion, en fonction de la longueur d’onde dans le domaine visible proche-infrarouge, en fonction des états de polarisation. Ces mesures de diffusion spectro-polarimétriques sont couplées à une technique d’imagerie par holographie digitale pour permettre de la mesure en simultanée des propriétés microphysiques, telles que la taille et la forme des aérosols. En effet, le phénomène de rétrodiffusion est un phénomène particulièrement sensible aux propriétés microphysiques des aérosols. Après une validation du concept de mesure, l’instrument SOPHOS a été étalonné à partir de particules sphériques de taille connue, puis utilisé pour mesurer des propriétés radiatives spectro-polarimétriques d’aérosols atmosphériques tels que des poussières volcaniques et désertiques, mais aussi d’intérêt pour spatial tel que les régolithes lunaires. L’apport de ces mesures sera in fine d’établir un lien entre leurs propriétés microphysiques et radiatives, en particulier en rétrodiffusion pour des applications lidar. Cette étude se portera sur l’analyse de la dépolarisation en fonction de la taille et du facteur de forme des particules a une multitude de longueurs d’onde. De manière à observer l’effet de l’asphéricité des particules et de la longueur d’onde sur la dépolarisation. En perspective, une déclinaison portable de l’instrument SOPHOS a été développé durant la thèse. L’instrument HALO est un moyen portable de mesure holographique dédié à l'analyse des aérosols dans l’air. Ce dispositif permet de déterminer la distribution en taille et en forme ainsi qu’une mesure de l’extinction des aérosols dans le but d’apporter une analyse complémentaire aux mesures lidar à distance
The radiative properties of particles like aerosols are a crucial area of study for optical remote sensing, especially for techniques like elastic backscatter lidar. Radiative backscatter properties, such as the depolarization ratio, are particularly important for inverting the lidar equation and deriving physical products from a lidar measurement. The goal of this doctoral work aims to develop laboratory instrumentation dedicated to the spectropolarimetric measurement of the radiative parameters of aerosols, such as desert or volcanic dust. The instrument, named SOPHOS for Spectro-Polarimetric and HOlographic Scatterometer, allows for the measurement of scattering properties, including backscatter, as a function of wavelength in the visible to near-infrared spectrum, based on polarization states. These spectropolarimetric scattering measurements are coupled with a digital holography imaging technique to simultaneously measure microphysical properties, such as the size and shape of aerosols. Indeed, the backscatter phenomenon is particularly sensitive to the microphysical properties of aerosols. Following a validation of the measurement concept, the SOPHOS instrument was calibrated using spherical particles of known size and then used to measure the spectropolarimetric radiative properties of atmospheric aerosols, such as volcanic and desert dust, but also of interest for space, such as lunar regoliths. The contribution of these measurements will ultimately establish a link between their microphysical and radiative properties, particularly in backscatter for lidar applications. This study will focus on the analysis of depolarization as a function of particle size and shape factor at a multitude of wavelengths, to observe the effect of particle asphericity and wavelength on depolarization. In perspective, a portable version of the SOPHOS instrument was developed during the thesis. The HALO instrument is a portable holographic measurement device dedicated to the analysis of aerosols in the air. This device allows determining the size and shape distribution as well as a measurement of the aerosol extinction with the aim of providing a complementary analysis to remote lidar measurements
2

Perrot, Clément. "Imagerie directe de systèmes planétaires avec SPHERE et prédiction des performances de MICADO sur l’E-ELT." Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCC212/document.

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Cette thèse s'inscrit dans la thématique de l'étude de la formation et de l'évolution des systèmes planétaire grâce à la méthode de l'imagerie à haut contraste, aussi appelée imagerie directe, par comparaison aux méthodes de détection dites "indirectes". Le travail que je présente dans ce manuscrit s'articule en deux parties bien distinctes. La première partie concerne la composante observationnel de ma thèse, à l'aide de l'instrument SPHERE installé au Very Large Telescope, au sein du consortium du même nom. L'instrument SPHERE a pour objectif la détection et la caractérisation de jeunes et massives exoplanètes mais également de disques circumstellaires allant des très jeune disques protoplanétaires aux disques de débris, plus âgés. Ainsi, je présente dans ce manuscrit ma contribution au programme SHINE, un grand relevé de 200 nuits dont le but est la détection de nouvelles exoplanètes ainsi que la caractérisation spectrale et orbitale des quelques compagnons déjà connus. J'y présente également les deux études de disques circumstellaires que j'ai réalisées, autour des étoiles HD 141569 et HIP 86598. La première étude ayant permis la découverte d'anneaux concentriques à quelques dizaine d'UA de l'étoile ainsi que de asymétrie dans le flux du disque inhabituelle. La seconde étude porte sur la découverte d'un disque de débris présentant également une asymétrie en flux inhabituelle. La deuxième partie concerne la composante instrumentale de mon travail de thèse, au sein du consortium MICADO, en charge de la conception de la caméra du même nom qui sera l'un des instruments de première lumière de l'Extremely Large Telescope Européen (ELT). Dans ce manuscrit, je présente l'étude que j'ai menée afin de définir le design de certain composant du mode coronographique de MICADO tout en tenant compte des contraintes de l'instrument qui n'est pas dédié à l'imagerie haut contraste, contrairement à SPHERE
This thesis is performed in the context of the study of the formation and evolution of planetary systems using high contrast imaging, also known as direct imaging in contrast to so-called "indirect" detection methods. The work I present in this manuscript is divided into two distinct parts.The first part concerns the observational component of my thesis, using the SPHERE instrument installed at Very LargeTelescope. This work was done as part of the consortium of the same name. The purpose of the SPHERE instrument is to detect and characterize young and massive exoplanets, but also circumstellar disks ranging from very young protoplanetary disks to older debris disks. In this manuscript, I present my contribution to the program SHINE, a large survey with an integration time of 200 nights' worth of observation, the goal of which is the detection of new exoplanets and the spectral and orbital characterization of some previously-known companions. I also present the two studies of circumstellar disks that I made, around the stars HD 141569 and HIP 86598. The first study allowed the discovery of concentric rings at about ten AU of the star along with an unusual flux asymmetry in the disk. The second study is about the discovery of a debris disk that also has an unusual flux asymmetry. The second part concerns the instrumental component of my thesis work done within the MICADO consortium, in charge of the design of the camera of the same name which will be one of the first light instruments of the European Extremely Large Telescope (ELT). In this manuscript, I present the study in which I define the design of some components of the coronagraphic mode of MICADO while taking into account the constraints of the instrument - which is not dedicated to high contrast imaging, unlike SPHERE

Книги з теми "Spectro-Polarimetric":

1

Hyperspectral and Spectro-Polarimetric Pixel-Level Classification Using Genetic Programming. Storming Media, 2001.

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Частини книг з теми "Spectro-Polarimetric":

1

Ceolato, Romain, and Nicolas Riviere. "Advances in Spectro-Polarimetric Light-Scattering by Particulate Media." In Springer Series in Light Scattering, 55–107. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70808-9_2.

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2

Mukhopadhyay, Nilanjan, and Arijit Saha. "Design of Super-Achromatic Phase Controlling Assemblies for THz Spectro-Polarimetric Imaging System Using Metaheuristic Optimization Technique." In Progress in Optical Science and Photonics, 17–28. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0228-6_2.

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Тези доповідей конференцій з теми "Spectro-Polarimetric":

1

Kim, Youngchan, Wonjoon Jin, Sunghyun Cho, and Seung-Hwan Baek. "Neural Spectro-polarimetric Fields." In SA '23: SIGGRAPH Asia 2023. New York, NY, USA: ACM, 2023. http://dx.doi.org/10.1145/3610548.3618172.

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2

Gerini, G., L. P. Stoevelaar, and T. Ceccotti. "Metamaterial Based Spectro-polarimetric Systems." In 2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials). IEEE, 2020. http://dx.doi.org/10.1109/metamaterials49557.2020.9285133.

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3

Knitter, S., M. Kues, and C. Fallnich. "Spectro-polarimetric Measurements on Random Lasers." In CLEO: Science and Innovations. Washington, D.C.: OSA, 2012. http://dx.doi.org/10.1364/cleo_si.2012.cth4d.5.

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4

Wang, Xueji, Ziyi Yang, and Zubin Jacob. "Spinning Meta-Cam: Spectro-Polarimetric Long-wave Infrared Thermal Imaging based on Spinning Metasurfaces." In CLEO: Fundamental Science. Washington, D.C.: Optica Publishing Group, 2023. http://dx.doi.org/10.1364/cleo_fs.2023.fth4d.2.

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5

Huber, Daniel F., Louis J. Denes, Martial Hebert, Milton S. Gottlieb, Boris Kaminsky, and Peter Metes. "Spectro-polarimetric imager for intelligent transportation systems." In Intelligent Systems & Advanced Manufacturing, edited by Marten J. de Vries, Pushkin Kachroo, Kaan Ozbay, and Alan C. Chachich. SPIE, 1998. http://dx.doi.org/10.1117/12.300844.

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6

Levesque, Martin P., Maria Dissanska, and Jean-Pierre Ardouin. "Polarization artefacts correction procedure for a spectro-polarimetric goniometer." In IGARSS 2014 - 2014 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2014. http://dx.doi.org/10.1109/igarss.2014.6947108.

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7

Plemmons, Robert J., Sudhakar Prasad, and Qiang Zhang. "Deblurring Compressive Spectro-Polarimetric Images Taken Trough Atmospheric Turbulence." In Signal Recovery and Synthesis. Washington, D.C.: OSA, 2014. http://dx.doi.org/10.1364/srs.2014.stu3f.1.

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8

Jones, A. M., S. A. Kemme, D. A. Scrymgeour, and R. A. Norwood. "Single layer spectro-polarimetric filter for advanced LWIR FPAs." In SPIE Defense, Security, and Sensing, edited by Bjørn F. Andresen, Gabor F. Fulop, and Paul R. Norton. SPIE, 2012. http://dx.doi.org/10.1117/12.919313.

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9

Rodenhuis, M., B. Sprenger, and C. U. Keller. "A spectro-polarimetric integral field spectrograph for EPICS-EPOL." In SPIE Astronomical Telescopes + Instrumentation, edited by Ian S. McLean, Suzanne K. Ramsay, and Hideki Takami. SPIE, 2012. http://dx.doi.org/10.1117/12.927206.

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10

Lozi, Julien, Olivier Guyon, Tomoyuki Kudo, Jin Zhang, Nemanja Jovanovic, Barnaby Norris, Marc-Antoine Martinod, et al. "New NIR spectro-polarimetric modes for the SCExAO instrument." In Adaptive Optics Systems VII, edited by Dirk Schmidt, Laura Schreiber, and Elise Vernet. SPIE, 2020. http://dx.doi.org/10.1117/12.2562792.

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Звіти організацій з теми "Spectro-Polarimetric":

1

Rauss, Patrick. Hyperspectral and Spectro-Polarimetric Pixel-Level Classification Using Genetic Programming. Fort Belvoir, VA: Defense Technical Information Center, November 2001. http://dx.doi.org/10.21236/ada397832.

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