Zobrazeno 1 - 10 of 288 pro vyhledávání: '"Guy Perrin"'
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Akademický článek
Estudio preliminar de las formas de clima en las zonas cálidas y de sus relaciones con la vegetación
Autor: Guy Perrin de Brichambaut
Publikováno v: Botan‪ical Sciences, Iss 23 (1958)
Muchas y muy diferentes clasificaciones, climáticas se han usado para los estudios ecológicos en la región tropical. Todas ellas resultan incompletas, ya que faltan observaciones sobre numerosos factores climáticos muy importantes. Por ello, y po
Externí odkaz: https://doaj.org/article/57ae54b2f733434f8c9eab7093ac928b
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4
A dusty veil shading Betelgeuse during its Great Dimming
Autor: Stefan Kraus, Eric Lagadec, E. Cannon, Florentin Millour, Guy Perrin, A. de Koter, John D. Monnier, Andrea Chiavassa, Xavier Haubois, Claudia Paladini, Narsireddy Anugu, Peter Scicluna, Andrea K. Dupree, L. Decin, Philippe Stee, Bruno Lopez, Gioia Rau, M. Montargès, William C. Danchi, K. Kravchenko, S. T. Ridgway, Ryan P. Norris, J. Sanchez-Bermudez, Pierre Kervella, Faustine Cantalloube, J-B. Le Bouquin, Markus Wittkowski
Publikováno v: Nature
Nature, Nature Publishing Group, 2021, 594 (7863), pp.365-368. ⟨10.1038/s41586-021-03546-8⟩
Nature, 594(7863), 365-368. Nature Publishing Group
Red supergiants are the most common final evolutionary stage of stars that have initial masses between 8 and 35 times that of the Sun1. During this stage, which lasts roughly 100,000 years1, red supergiants experience substantial mass loss. However,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c41df1f9c29423c75459ae844cf0cdc
https://doi.org/10.1038/s41586-021-03546-8
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5
Du flou des images astronomiques à un prix Nobel de physique
Autor: Pierre Léna, Guy Perrin
Publikováno v: Reflets de la physique. :21-27
Deux des lauréats du prix Nobel de physique 2020 sont primés pour leurs observations 1, qui ont confirmé l’existence d’un trou noir supermassif au centre de notre Galaxie. En améliorant considérablement, jusqu’à un facteur de plus de cent
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1494b8b5ccba4d50a8d6067bddbe1fe4
https://doi.org/10.1051/refdp/202169021
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9
A geometric distance to the supermassive black Hole of NGC 3783
Autor: N. M. Förster Schreiber, M. L. Bolzer, Pierre-Olivier Petrucci, E. Sturm, Jason Dexter, Thibaut Paumard, Florentin Millour, Christopher A. Onken, Christian Straubmeier, Sebastian F. Hönig, Daniel Rouan, Makoto Kishimoto, Reinhard Genzel, Yann Clénet, P. T. de Zeeuw, Julien Woillez, Ric Davies, D. Kaltenbrunner, António Amorim, A. Drescher, Jinyi Shangguan, S. von Fellenberg, D. Gratadour, Misty C. Bentz, Linda J. Tacconi, J. Stadler, Karine Perraut, Felix Widmann, P. Vermot, Amiel Sternberg, Thomas Ott, Paulo J. V. Garcia, Rachel Street, Wolfgang Brandner, Odele Straub, Dieter Lutz, Hagai Netzer, Mercedes Prieto, Taro Shimizu, Stefan Gillessen, Konrad R. W. Tristram, Oliver Pfuhl, M. Bauböck, Frank Eisenhauer, Andreas Eckart, Guy Perrin, Sylvestre Lacour
Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 654, pp.A85. ⟨10.1051/0004-6361/202141426⟩
Astron.Astrophys.
Astron.Astrophys., 2021, 654, pp.A85. ⟨10.1051/0004-6361/202141426⟩
Astronomy and Astrophysics, 654, 1-14
The angular size of the broad line region (BLR) of the nearby active galactic nucleus (AGN) NGC 3783 has been spatially resolved by recent observations with VLTI/GRAVITY. A reverberation mapping (RM) campaign has also recently obtained high quality l
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1aab43db09055b853d3eadf05fdca70b
https://hal.archives-ouvertes.fr/hal-03441771
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10
Constraining particle acceleration in Sgr A⋆ with simultaneous GRAVITY, Spitzer, NuSTAR, and Chandra observations
Autor: Wolfgang Brandner, A. Jiménez-Rosales, Mark Gurwell, Stefan Hippler, Christian Straubmeier, Th. Henning, Fiona A. Harrison, Jason Dexter, N. M. Förster Schreiber, F. Vincent, Pierre Kervella, Daryl Haggard, S. Yazici, Silvia Scheithauer, Oliver Pfuhl, Y. Dallilar, T. Taro Shimizu, Idel Waisberg, Odele Straub, K. Foster, Felix Widmann, Sera Markoff, Dieter Lutz, J.-B. Le Bouquin, M. Bauböck, Matthew Horrobin, Yann Clénet, P. T. de Zeeuw, Gabriele Ghisellini, Howard A. Smith, Frederick K. Baganoff, Daniel Stern, Thibaut Paumard, Eckhard Sturm, Ric Davies, M. Nowak, Andreas Eckart, Andreas Kaufer, Sebastian Rabien, Laurent Jocou, Paulo J. V. Garcia, Ekkehard Wieprecht, Reinhard Genzel, Jinyi Shangguan, G. Rodríguez-Coira, Patrick Lowrance, C. J. Hailey, Thomas Ott, S. Zhang, A. Drescher, G. Ponti, Giovanni G. Fazio, Steven P. Willner, S. D. von Fellenberg, Linda J. Tacconi, Maryam Habibi, H. Bonnet, Julien Woillez, V. Lapeyrère, Sylvestre Lacour, António Amorim, Erich Wiezorrek, Xavier Haubois, Guy Perrin, J. Neilsen, K. Mori, Eric Gendron, Frank Eisenhauer, G. Heißel, Pierre Léna, Joseph L. Hora, Karine Perraut, Charles F. Gammie, Feng Gao, G. Witzel, Gérard Zins, Mark Morris, André Young, Julia Stadler, Jean-Phillipe Berger, Hope Boyce, Stefan Gillessen, Lieselotte Jochum, Roberto Abuter
Publikováno v: Astronomy and Astrophysics, 654, 1-18
Astronomy & Astrophysics, 654:A22. EDP Sciences
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 654, pp.A22. ⟨10.1051/0004-6361/202140981⟩
Astronomy & Astrophysics
We report the time-resolved spectral analysis of a bright near-infrared and moderate X-ray flare of Sgr A*. We obtained light curves in the $M$-, $K$-, and $H$-bands in the mid- and near-infrared and in the $2-8~\mathrm{keV}$ and $2-70~\mathrm{keV}$
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b318bce0dbccbb512624716eecc8f67
https://doi.org/10.1051/0004-6361/202140981
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