Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Jouve, Laurene"'
The transport of angular momentum (AM) and chemical elements within evolving stars remains poorly understood. Recent observations showed that the radiative cores of low mass main sequence stars and red giants rotate orders of magnitude slower than cl
Externí odkaz:
http://arxiv.org/abs/2311.13962
The emergence of active regions on the Sun is an integral feature of the solar dynamo mechanism. However, details about the generation of active-region-scale magnetism and the journey of this magnetic flux to the photosphere are still in question. Sh
Externí odkaz:
http://arxiv.org/abs/2306.06536
Autor:
Nandy, Dibyendu, Banerjee, Dipankar, Bhowmik, Prantika, Brun, Allan Sacha, Cameron, Robert H., Gibson, S. E., Hanasoge, Shravan, Harra, Louise, Hassler, Donald M., Jain, Rekha, Jiang, Jie, Jouve, Laurène, Mackay, Duncan H., Mahajan, Sushant S., Mandrini, Cristina H., Owens, Mathew, Pal, Shaonwita, Pinto, Rui F., Saha, Chitradeep, Sun, Xudong, Tripathi, Durgesh, Usoskin, Ilya G.
Despite investments in multiple space and ground-based solar observatories by the global community, the Sun's polar regions remain unchartered territory - the last great frontier for solar observations. Breaching this frontier is fundamental to under
Externí odkaz:
http://arxiv.org/abs/2301.00010
Autor:
Zaire, Bonnie, Jouve, Laurene
Magnetic fields vary in complexity for different stars. The stability of dipolar magnetic fields is known to depend on different quantities, e.g., the stellar rotation, the stratification, and the intensity of convective motions. Here, we study the d
Externí odkaz:
http://arxiv.org/abs/1911.13285
Autor:
Yu, Louise F., Donati, Jean-François, Grankin, Konstantin, Cameron, Andrew Collier, Moutou, Claire, Hussain, Gaitee, Baruteau, Clément, Jouve, Laurène, collaboration, the MaTYSSE
We report the analysis, conducted as part of the MaTYSSE programme, of a spectropolarimetric monitoring of the ~0.8 Myr, ~1.4 MSun disc-less weak-line T Tauri star V410 Tau with the ESPaDOnS instrument at the Canada-France-Hawaii Telescope and NARVAL
Externí odkaz:
http://arxiv.org/abs/1909.01199
Publikováno v:
Frontiers in Astronomy and Space Sciences 5:4, 2018
We present a three-dimensional numerical model for the generation and evolution of the magnetic field in the solar convection zone, in which sunspots are produced and contribute to the cyclic reversal of the large-scale magnetic field. We then assess
Externí odkaz:
http://arxiv.org/abs/1801.09625
Autor:
Hung, Ching Pui, Brun, Allan Sacha, Fournier, Alexandre, Jouve, Laurène, Talagrand, Olivier, Zakari, Mustapha
We present in this work the development of a solar data assimilation method based on an axisymmetric mean field dynamo model and magnetic surface data, our mid-term goal is to predict the solar quasi cyclic activity. Here we focus on the ability of o
Externí odkaz:
http://arxiv.org/abs/1710.02114
We show how magnetic observations of the Sun can be used in conjunction with an axisymmetric flux-transport solar dynamo model in order to estimate the large-scale meridional circulation throughout the convection zone. Our innovative approach rests o
Externí odkaz:
http://arxiv.org/abs/1710.02084
Publikováno v:
Space Sci. Rev., 196, 221, 2015
We review recent advances and results in enhancing and developing helioseismic analysis methods and in solar data assimilation. In the first part of this paper we will focus on selected developments in time-distance and global helioseismology. In the
Externí odkaz:
http://arxiv.org/abs/1603.04742
Publikováno v:
A&A 580, A103 (2015)
Recent spectropolarimetric surveys of main-sequence intermediate-mass stars have exhibited a dichotomy in the distribution of the observed magnetic field between the kG dipoles of Ap/Bp stars and the sub-Gauss magnetism of Vega and Sirius. We would l
Externí odkaz:
http://arxiv.org/abs/1507.01508