Zobrazeno 1 - 10
of 489
pro vyhledávání: '"Arregui, I."'
Publikováno v:
A&A 677, A23 (2023)
We compute the evidence in favour of two models, one based on field-aligned thermal conduction alone and another that includes thermal misbalance as well, in explaining the damping of slow magneto-acoustic waves in hot coronal loops. Our analysis is
Externí odkaz:
http://arxiv.org/abs/2307.02439
Autor:
Terradas, J., Soler, R., Oliver, R., Antolin, P., Arregui, I., Luna, M., Piantschitsch, I., Soubrié, E., L., J., Ballester
Coronal holes and active regions are typical magnetic structures found in the solar atmosphere. We propose several magnetohydrostatic equilibrium solutions that are representative of these structures in two dimensions. Our models include the effect o
Externí odkaz:
http://arxiv.org/abs/2202.06800
Autor:
Arregui, I.
Recent observational and theoretical studies indicate that the damping of solar coronal loop oscillations depends on the oscillation amplitude. We consider two mechanisms, linear resonant absorption and a nonlinear damping model. We confront theoreti
Externí odkaz:
http://arxiv.org/abs/2106.12243
Publikováno v:
A&A, 641, A106 (2020)
This paper investigates the changes in spatial properties when magnetohydrodynamic (MHD) waves undergo resonant damping in the Alfv\'en continuum. The analysis is carried out for a 1D cylindrical pressure-less plasma with a straight magnetic field. T
Externí odkaz:
http://arxiv.org/abs/2009.08152
Autor:
Montes-Solís, M., Arregui, I.
We use Coronal Multi-channel Polarimeter (CoMP) observations of propagating waves in the solar corona and Bayesian analysis to assess the evidence of models with resonant damping and foot-point wave power asymmetries. Two nested models are considered
Externí odkaz:
http://arxiv.org/abs/2008.03004
Publikováno v:
A&A 625, A35 (2019)
A classic application of coronal seismology uses transverse oscillations of waveguides to obtain estimates of the magnetic field strength. The procedure requires information on the density of the structures. Often, it ignores the damping of the oscil
Externí odkaz:
http://arxiv.org/abs/1903.05437
Publikováno v:
Rial et al. (2019) ApJ, 876, 86
The purpose of this work is to develop a procedure to obtain the normal modes of a coronal loop from time-dependent numerical simulations with the aim of better understanding observed transverse loop oscillations. To achieve this goal, in this paper
Externí odkaz:
http://arxiv.org/abs/1902.00211
Autor:
Montes-Solís, M., Arregui, I.
Publikováno v:
A&A 622, A88 (2019)
High resolution observations have permitted to resolve the solar prominences/filaments as sets of threads/fibrils. However, the values of the physical parameters of these threads and their structuring remain poorly constrained. We use prominence seis
Externí odkaz:
http://arxiv.org/abs/1812.07262
Autor:
Said, H. Ait, Ait Bourhim, I., Ouarga, A., Iraola-Arregui, I., Lahcini, M., Barroug, A., Noukrati, H., Ben youcef, H.
Publikováno v:
In International Journal of Biological Macromolecules 15 January 2023 225:1107-1118
Autor:
Arregui, I.
In contrast to the situation in a laboratory, the study of the solar atmosphere has to be pursued without direct access to the physical conditions of interest. Information is therefore incomplete and uncertain and inference methods need to be employe
Externí odkaz:
http://arxiv.org/abs/1709.08372