Literatura científica selecionada sobre o tema "Astronomie sphérique"
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Artigos de revistas sobre o assunto "Astronomie sphérique"
BELLOSTA, HÉLÈNE. "LE TRAITÉ DE THĀBIT IBN QURRA SUR LA FIGURE SECTEUR". Arabic Sciences and Philosophy 14, n.º 1 (março de 2004): 145–68. http://dx.doi.org/10.1017/s0957423904000037.
Texto completo da fonteNorth, John. "Les mathématiques infinitésimales du IXe au XIe siècle; Astronomie, géométrie sphérique et trigonométrie". Early Science and Medicine 12, n.º 4 (2007): 437–39. http://dx.doi.org/10.1163/157338207x231431.
Texto completo da fonteNadal, Robert, Abdelkaddous Taha e Pierre Pinel. "Le contenu astronomique des Sphériques de Ménélaos". Archive for History of Exact Sciences 58, n.º 5 (julho de 2004): 381–436. http://dx.doi.org/10.1007/s00407-003-0077-y.
Texto completo da fonteNadal, Robert, Abdelkaddous Taha e Pierre Pinel. "Le contenu astronomique des Sphériques de Ménélaos". Archive for History of Exact Sciences 58, n.º 5 (julho de 2004): 437. http://dx.doi.org/10.1007/s00407-004-0084-7.
Texto completo da fonteDettwiller, Luc. "Propriétés remarquables de la réfraction astronomique dans une atmosphère à symétrie sphérique". Comptes Rendus. Physique 23, S1 (8 de março de 2023): 1–40. http://dx.doi.org/10.5802/crphys.113.
Texto completo da fonteBorghese, F., P. Denti, R. Saija, M. A. Iatì e O. I. Sindoni. "Optical resonances of spheres containing an eccentric spherical inclusion". Journal of Optics 29, n.º 1 (fevereiro de 1998): 28–34. http://dx.doi.org/10.1088/0150-536x/29/1/005.
Texto completo da fontePellat-Finet, Pierre, e Pierre-Emmanuel Durand. "La notion de spectre angulaire sphérique". Comptes Rendus Physique 7, n.º 3-4 (abril de 2006): 457–63. http://dx.doi.org/10.1016/j.crhy.2006.05.003.
Texto completo da fonteCOSTE, O., J. C. PATRAT e R. HENRY. "APPLICATION DES ÉQUATIONS INTÉGRALES D'HELMHOLTZ À L'OPTIMISATION D'UNE SONDE INTENSIMÉTRIQUE 3D SPHÉRIQUE". Le Journal de Physique IV 02, n.º C1 (abril de 1992): C1–669—C1–672. http://dx.doi.org/10.1051/jp4:19921145.
Texto completo da fonteGourgoulhon, Eric. "Equilibre et effondrement gravitationnel des étoiles en relativité générale et en symétrie sphérique". Annales de Physique 18, n.º 1 (1993): 1–87. http://dx.doi.org/10.1051/anphys:019930018010100.
Texto completo da fonteVilleneuve, Jean-Eudes, Albéric Boivin e Subhash C. Biswas. "L'image tridimensionnelle du point en présence d'aberration sphérique primaire et de filtrage d'amplitude : unitaire ou modal". Canadian Journal of Physics 63, n.º 2 (1 de fevereiro de 1985): 287–300. http://dx.doi.org/10.1139/p85-046.
Texto completo da fonteTeses / dissertações sobre o assunto "Astronomie sphérique"
Moussa, Ali Ibrahim. "L' Almageste d'Abû Al-Wafâ'". Paris 7, 2005. http://www.theses.fr/2005PA070029.
Texto completo da fonteWe find here the edition, the translation and the historical-mathematical commentaries of one of the astronomical traetises of the tenth century in Baghdad. His author, Abû Al-Wafâ', has discovered the law of sines in spherical trigonometry, and this discovery is very important historically. The theory of the planets is directly dependant of the theory of Ptolemy, but with a better mathematical accuracy
Dastgheibi, Fard Ali. "Étude d’un détecteur sphérique gazeux pour la recherche d’événements rares à bas seuil en énergie". Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112297/document.
Texto completo da fonteThe Spherical gaseous detector (or Spherical Proportional Counter, SPC) is a novel type of a particle detector, with a broad range of applications. Its main features in- clude a very low energy threshold which is independent of the volume (due to its very low capacitance), a good energy resolution, robustness and a single detection readout channel. SEDINE, a low background detector installed at the underground site of Laboratoire Souterrain de Modane is currently being operated and aims at measuring events at a very low energy threshold, around 40 eV. The sensitivity for the rare events detection at low energy is correlated to the detector background and to the decreasing the level of energy threshold, which was the main point of this thesis. A major effort has been devoted to the operating of the experimental detector. Several detection parameters were optimized: the electric field homogeneity in the sphere, keeping clear of sparks, the electronic noise level and the leak rate of the detector. The detector is optimized for operation with a high pressure stable gain. The modification of the shield, cleanings of the detector and the addition of an anti-Radon tent have significantly reduced the background of SEDINE. Progress has increased the sensitivity of the detector at low energy up to a value comparable to the results other underground research experiences for the low mass WIMPs. We will present the results with a measured background in the region of keV, which has allowed us to show a competitive figure of exclusion for the production of light dark matter
Czinczenheim, Claire, e Théodose de Tripoli. "Édition, traduction et commentaire des Sphériques de Théodose". Paris 4, 2000. http://www.theses.fr/2000PA040162.
Texto completo da fonteBrossard, Alexis. "Optimization of spherical proportional counter backgrounds and response for low mass dark matter search". Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASS041.
Texto completo da fonteThe spherical proportional counters have been used by the NEWS-G collaboration since 2013 for dark matter search with the SEDINE detector installed at the Laboratoire Souterrain de Modane. This first detector allowed for establishing a new limit on the WIMP-nucleon cross section for WIMPs of mass less than 0.6 GeV/c². Since then, the collaboration has been working on the development of a new detector. This thesis focuses on two improved aspects of the second detector. The study of the background observed by SEDINE led to the conclusion that it is dominated by the presence of Pb²¹⁰ decay chain on the surfaces and in the materials making up the detector and its shielding. This allowed for the selection of materials and manufacturing methods to reduce the background noise of the next detector. The second development concerns the detector anode. Placed in the center of the sphere, the anode ensures the formation of the signal. The latest developments show the ability of this component to ensure the detection of single electrons while being stable and with good resolution. This study made it possible to develop a new generation of detector which will be installed at SNOLAB in 2020
Fromont, Paul de. "Cosmologie et gravité des régions sphériques compensées". Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCC148/document.
Texto completo da fonteThis thesis is devoted to the study of the imprints of dark energy on the formation of the large scale structures in the Universe. I define the spherically compensated cosmic regions as the large-scale environment around local extrema in the density field. For central minimum, this region can be identified with standard cosmic voids. Using numerical simulations, I show that these regions, once properly identified, can be used efficiently to distinguish competitive cosmological models. I show that the average shape of these density profiles and their statistical properties can be analytically computed in the primordial Universe. Using an appropriate dynamical formalism, I show that it is possible to follow the nonlinear evolution of these structures until today. This allows to reconstruct the shape of such large scale regions from first principles. I exhibit a fundamental property of these regions which maintains constant a particular size : the compensation radius. Around this radius, the nonlinear evolution of the matter field can be analytically derived. By studying the gravitational collapse in gravity models beyond General Relativity, I show that it is possible to constrain efficiently both cosmology and the nature of gravity. Beside giving a physically motivated model for both shape and statistical properties of such large scale matter profile, this work also define new cosmological probes that could be used to test the nature of our Universe
Zhang, Jiao. "Map making from transit interferometers observations for 21cm Intensity Mapping experiments : Application to Tianlai and PAON-4". Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS158/document.
Texto completo da fonteThe analysis of the statistical properties of the distribution of matter in the cosmos (LSS or Large Scale Structure) is one of the main cosmological probes that allow the study of the cosmological standard model, in particular the parameters characterizing dark matter and dark energy. Baryonic Acoustic Oscillations (BAO's) are one of the measurements that can be extracted from the study of matter distribution in large-scale structure (LSS).The observation of the cosmic distribution of the matter from neutral atomic hydrogen (HI) 21 cm emission is a new method, complementary to the optical observation to map the distribution of matter in the cosmos. In the last decade, the Intensity Mapping method has been proposed as an effective method for mapping the 21cm radio emission in three dimensions. In particular, it does not require the detection of individual objects (galaxies), and can therefore be performed with instruments smaller in size than those such as SKA or FAST, which are designed to detect 21 cm galaxies at cosmological distances. A radio interferometer using a set of fixed cylindrical or parabolic reflectors observing the sky in transit mode are suitable instruments for intensity mapping surveys. The specific observational mode from this type of radio telescope by intensity mapping is studied in the context of this thesis. We show in particular that a specific sky maps reconstruction method from the visibilities can be applied to the observations of these interferometers operating in transit mode. This method corresponds to the m-modes decomposition of the spherical harmonics and is very efficient for the reconstruction of large sky areas observed in transit mode. A reconstruction code based on this principle has been developed, as well as different criteria for the comparison of instrumental performances, such as the synthesized antenna lobe, the noise spectrum of the reconstructed maps and the overall instrument response in the spherical harmonics (l,m) plane. The method has then been applied to different configurations of interferometers composed of parabolic or cylindrical reflectors in the PAON-4 and Tianlai projects. In addition to optimizing the Tianlai and PAON-4 interferometer configurations, the work presented here includes a first application of the method to the PAON-4 data
Livros sobre o assunto "Astronomie sphérique"
Danjon. Astronomie générale: Astronomie sphérique et éléments de mécanique céleste. Albert Blanchard, 1986.
Encontre o texto completo da fonteBerggren, J. L., e R. S. D. Thomas. Euclid's Phaenomena: A Translation and Study of a Hellenistic Treatise in Spherical Astronomy. CRC Press LLC, 2019.
Encontre o texto completo da fonteBerggren, J. L. Euclid's Phaenomena: A Translation and Study of a Hellenistic Treatise in Spherical Astronomy. CRC Press LLC, 2019.
Encontre o texto completo da fonteBerggren, J. L. Euclid's Phaenomena: A Translation and Study of a Hellenistic Treatise in Spherical Astronomy. CRC Press LLC, 2019.
Encontre o texto completo da fonte