Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Andrei, Alexandre Humberto"'
Autor:
Sigismondi, Costantino, Andrei, Alexandre Humberto, Boscardin, Sérgio Calderari, Penna, Jucira Lousada, Reis-Neto, Eugênio
Measuring the solar diameter at all position angles gives the complete figure of the Sun. Their asphericities have implications in classical physics and general relativity, and the behavior of the optical systems used in the direct measurements is to
Externí odkaz:
http://arxiv.org/abs/1507.03636
The great meridian line in the Basilica of Santa Maria degli Angeli in Rome was built in 1701/1702 with the scope of measuring the obliquity of the Earth's orbit in the following eight centuries, upon the will of Pope Clement XI. During the winter so
Externí odkaz:
http://arxiv.org/abs/1412.6096
Autor:
Sigismondi, Costantino, Boscardin, Sergio Calderari, Andrei, Alexandre Humberto, Penna, Jucira Lousada, Neto, Eugenio Reis, D'Ávila, Victor Amorim
The interest on the solar diameter variations has been primary since the scientific revolution for different reasons: first the elliptical orbits found by Kepler in 1609 was confirmed in the case of the Earth, and after the intrinsic solar variabilit
Externí odkaz:
http://arxiv.org/abs/1402.1762
Autor:
Sigismondi, Costantino, Boscardin, Sergio Calderari, Andrei, Alexandre Humberto, Reis-Neto, Eugenio, Penna, Jucira Lousada, D'Avila, Victor Amorim
Monitoring the micro-variations of the solar diameter helps to better understand local and secular trends of solar activity and Earth climate. The instant measurements with the Reflecting Heliometer of Observatorio Nacional in Rio de Janeiro have min
Externí odkaz:
http://arxiv.org/abs/1311.3472
Autor:
Andrei, Alexandre Humberto, Sigismondi, Costantino, Reis-Neto, Eugenio, Penna, Jucira Lousada, Boscardin, Sergio Calderari
Out of the three quantities that characterize the state of an isolated gaseous body: pressure, temperature and volume the radius is the only one directly measurable for the Sun, what is specially true in the optical window and for ground base measure
Externí odkaz:
http://arxiv.org/abs/1306.3204
Autor:
d'Avila, Victor, Neto, Eugenio Reis, Coletti, Alissandro, Oliveira, Luis Carlos, Matias, Victor, Andrei, Alexandre Humberto, Penna, Jucira Lousada, Boscardin, Sergio Calderari, Sigismondi, Costantino
The heliometer of Fraunhofer in Koenigsberg (1824) is a refractor in which the lens is split into two halves to which is applied a linear displacement along the cut. Later in 1890s a variation of the heliometer has been realized in Goettingen using a
Externí odkaz:
http://arxiv.org/abs/1112.5871
Autor:
Malbet, Fabien, Léger, Alain, Shao, Michael, Goullioud, Renaud, Lagage, Pierre-Olivier, Brown, Anthony G. A., Cara, Christophe, Durand, Gilles, Eiroa, Carlos, Feautrier, Philippe, Jakobsson, Björn, Hinglais, Emmanuel, Kaltenegger, Lisa, Labadie, Lucas, Lagrange, Anne-Marie, Laskar, Jacques, Liseau, René, Lunine, Jonathan, Maldonado, Jesús, Mercier, Manuel, Mordasini, Christoph, Queloz, Didier, Quirrenbach, Andreas, Sozzetti, Alessandro, Traub, Wesley, Absil, Olivier, Alibert, Yann, Andrei, Alexandre Humberto, Arenou, Frédéric, Beichman, Charles, Chelli, Alain, Cockell, Charles S., Duvert, Gilles, Forveille, Thierry, Garcia, Paulo J. V., Hobbs, David, Krone-Martins, Alberto, Lammer, Helmut, Meunier, Nadège, Minardi, Stefano, de Almeida, André Moitinho, Rambaux, Nicolas, Raymond, Sean, Röttgering, Huub J. A., Sahlmann, Johannes, Schuller, Peter A., Ségransan, Damien, Selsis, Franck, Surdej, Jean, Villaver, Eva, White, Glenn J., Zinnecker, Hans
(abridged) A complete census of planetary systems around a volume-limited sample of solar-type stars (FGK dwarfs) in the Solar neighborhood with uniform sensitivity down to Earth-mass planets within their Habitable Zones out to several AUs would be a
Externí odkaz:
http://arxiv.org/abs/1107.3643
Autor:
Andrei, Alexandre Humberto
Publikováno v:
Publications of the Astronomical Society of the Pacific, 1993 Mar 01. 105(685), 319-319.
Externí odkaz:
https://www.jstor.org/stable/40680026
Autor:
Lopez Fuentes, M. C., Mandrini, Cristina H., Démoulin, Pascal, Andrei, Alexandre Humberto, Rozelot, Jean-Pierre
Publikováno v:
IAU Symposium
Solar and Stellar Variability-Impact on Earth and Planets, IAU Symposium 264
Solar and Stellar Variability-Impact on Earth and Planets, IAU Symposium 264, Aug 2009, Rio de Janeiro, Brazil, Brazil. pp.102-104, ⟨10.1017/S1743921309992493⟩
Solar and Stellar Variability-Impact on Earth and Planets, IAU Symposium 264
Solar and Stellar Variability-Impact on Earth and Planets, IAU Symposium 264, Aug 2009, Rio de Janeiro, Brazil, Brazil. pp.102-104, ⟨10.1017/S1743921309992493⟩
Peculiar solar active regions (ARs), such as δ-islands and other high tilt bipoles, are commonly associated with the emergence of severely deformed magnetic flux tubes. Therefore, the study of these ARs provides valuable information on the origin an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::304a3fab4e1428c447f27fafba671736
https://doi.org/10.1017/s1743921309992493
https://doi.org/10.1017/s1743921309992493