202 citations · 1.3k across the 37 of their papers we have counts for
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Wave propagation and shock formation in different magnetic structures
Rebecca Centeno, Manuel Collados, Javier Trujillo Bueno
Velocity oscillations "measured" simultaneously at the photosphere and the chromosphere -from time series of spectropolarimetric data in the 10830 A region- of different solar magn…
Theoretical modeling of propagation of magneto-acoustic waves in magnetic regions below sunspots
E. Khomenko, A. Kosovichev, M. Collados +2
We use 2D numerical simulations and eikonal approximation, to study properties of MHD waves traveling below the solar surface through the magnetic structure of sunspots. We conside…
Error propagation in polarimetric demodulation
A. Asensio Ramos, M. Collados
The polarization analysis of the light is typically carried out using modulation schemes. The light of unknown polarization state is passed through a set of known modulation optics…
Channeling 5-min photospheric oscillations into the solar outer atmosphere through small-scale vertical magnetic flux tubes
E. Khomenko, R. Centeno, M. Collados +1
We report two-dimensional MHD simulations which demonstrate that photospheric 5-min oscillations can leak into the chromosphere inside small-scale vertical magnetic flux tubes. The…
Non-linear numerical simulations of magneto-acoustic wave propagation in small-scale flux tubes
E. Khomenko, M. Collados, T. Felipe
We present results of non-linear, 2D, numerical simulations of magneto-acoustic wave propagation in the photosphere and chromosphere of small-scale flux tubes with internal structu…
Low-lying magnetic loops in the solar internetwork
M. J. Martinez Gonzalez, M. Collados, B. Ruiz Cobo +1
The aim of this work is to study the structure of the magnetic field vector in the internetwork and search for the presence of small-scale loops. We invert 1.56 micron spectropolar…
A near-IR line of Mn I as a diagnostic tool of the average magnetic energy in the solar photosphere
A. Asensio Ramos, M. J. Martinez Gonzalez, A. Lopez Ariste +2
We report on spectropolarimetric observations of a near-IR line of Mn I located at 15262.702 A whose intensity and polarization profiles are very sensitive to the presence of hyper…
Evidence for Fine Structure in the Chromospheric Umbral Oscillation
R. Centeno, H. Socas-Navarro, M. Collados +1
Novel spectro-polarimetric observations of the \ion{He}{1} multiplet are used to explore the dynamics of the chromospheric oscillation above sunspot umbrae. The results presented h…
On the fine structure of the sunspot penumbrae. II. The nature of the Evershed flow
J. M. Borrero, A. Lagg, S. K. Solanki +1
We investigate the fine structure of the sunspot penumbra by means of a model that allows for a flux tube in horizontal pressure balance with the magnetic background atmosphere in…
The Hanle and Zeeman Effects in Solar Spicules: A Novel Diagnostic Window on Chromospheric Magnetism
J. Trujillo Bueno, L. Merenda, R. Centeno +2
An attractive diagnostic tool for investigating the magnetism of the solar chromosphere is the observation and theoretical modeling of the Hanle and Zeeman effects in spicules, as…
Detection of polarization from the E^4Π-A^4Πsystem of FeH in sunspot spectra
A. Asensio Ramos, J. Trujillo Bueno, M. Collados
Here we report the first detection of polarization signals induced by the Zeeman effect in spectral lines of the E^4Π-A^4Πsystem of FeH located around 1.6 m. Motivated by the te…
Fluxtube model atmospheres and Stokes V zero-crossing wavelengths
L. R. Bellot Rubio, B. Ruiz Cobo, M. Collados
First results of the inversion of Stokes I and V profiles from plage regions near disk center are presented. Both low and high spatial resolution spectra of FeI 6301.5 and FeI 6302…