99 citations · 329 across the 28 of their papers we have counts for
28 papers
The magnetic sensitivity of the Ca II resonance and subordinate lines in the solar atmosphere
I. Juanikorena Berasategi, E. Alsina Ballester, T. del Pino Alemán +1
Aims: The polarization of the Ca II resonant doublet (H and K lines) and the subordinate infrared triplet lines are key observables for diagnosing solar chromospheric magnetism. It…
Determining the Magnetic Field in the Atmosphere of a Solar Active Region Observed by the CLASP2.1 Sounding Rocket Experiment
Ryohko Ishikawa, Javier Trujillo Bueno, David E. McKenzie +17
We determine magnetic fields from the photosphere to the upper chromosphere combining data from the Hinode satellite and the CLASP2.1 sounding rocket experiment. CLASP2.1 provided…
The uncertainty of magnetic fields in 3D non-local thermodynamic equilibrium inversions
Jiri Stepan, Tanausu del Pino Aleman, Andres Vicente Arevalo
We describe our approach to solve the problem of ensuring the solenoidality of the magnetic field vector in three-dimensional (3D) inversions, as well as the estimation of the unce…
Mapping the longitudinal magnetic field in the atmosphere of an active region plage from the inversion of the near-ultraviolet CLASP2.1 spectropolarimetric data
Hao Li, Tanausú del Pino Alemán, Javier Trujillo Bueno +10
We apply the HanleRT Tenerife Inversion Code to the spectro-polarimetric observations obtained by the Chromospheric LAyer SpectroPolarimeter. This suborbital space experiment measu…
Magnetic field diagnostics of prominences with the Mg II k line: 3D Stokes inversions versus traditional methods
Jiří Štěpán, Tanausú del Pino Alemán, Javier Trujillo Bueno
The Mg II k resonance line is commonly used for diagnosing the solar chromosphere. We theoretically investigated its intensity and polarization in solar prominences, taking 3D radi…
Accurate PRD modeling of the forward-scattering Hanle effect in the chromospheric CaI 4227 Å line
Luca Belluzzi, Simone Riva, Gioele Janett +7
Measurable linear scattering polarization signals have been predicted and detected at the solar disk center in the core of chromospheric lines. These forward-scattering polarizatio…
Observation and Modeling of the circular polarization of the Cr I magnetic field induced transition at 533.03 nm
Hao Li, Tanausú del Pino Alemán, Javier Trujillo Bueno +1
We study the circular polarization of the magnetic field induced transition (MIT) between the and states of \ion{Cr}{1} at 533.03~nm…
Comparing Observed with Simulated Solar Disk Center Scattering Polarization in the Sr I 4607 Å line
Franziska Zeuner, Tanausú del Pino Alemán, Javier Trujillo Bueno +1
Solar magnetic fields alter scattering polarization in spectral lines like Sr I at 4607 Å via the Hanle effect, making it a potential diagnostic for small-scale mixed-polarity phot…
The impact of angle-dependent partial frequency redistribution on the scattering polarization of the solar Na i D lines
Gioele Janett, Ernest Alsina Ballester, Luca Belluzzi +2
The long-standing paradox of the linear polarization signal of the Na i D1 line was recently resolved by accounting for the atom's hyperfine structure and the detailed spectral str…
The He I 10830 A line: Radiative transfer and differential illumination effects
Andres Vicente Arevalo, Jiri Stepan, Tanausu del Pino Aleman +1
We study the formation of the Stokes profiles of the He I multiplet at 10830 A when relaxing two of the approximations that are often considered in the modeling of this multiplet,…
The magnetic sensitivity of the (250-278nm) Fe II polarization spectrum
David Afonso Delgado, Tanausú del Pino Alemán, Javier Trujillo Bueno
This paper presents a theoretical investigation on the polarization and magnetic sensitivity of the near-ultraviolet (near-UV) solar spectral lines of Fe II between 250 and 278 nm.…
Evidence for the Operation of the Hanle and Magneto-Optical Effects in the Scattering Polarization Signals Observed by CLASP2 Across the Mg II h and k Lines
Ryohko Ishikawa, Javier Trujillo Bueno, Ernest Alsina Ballester +8
Radiative transfer investigations of the solar Mg II h and k resonance lines around 280~nm showed that, while their circular polarization (Stokes V) signals arise from the Zeeman e…
Tomography of a solar plage with the Tenerife Inversion Code
Hao Li, T. del Pino Alemán, J. Trujillo Bueno +8
We apply the Tenerife Inversion Code (TIC) to the plage spectropolarimetric observations obtained by the Chromospheric LAyer SpectroPolarimeter (CLASP2). These unprecedented data c…
Formation of the Mg II h and k polarization profiles in a solar plage model and their suitability to infer magnetic fields
David Afonso Delgado, Tanausú del Pino Alemán, Javier Trujillo Bueno
The Mg II h and k lines are among the strongest in the near-ultraviolet solar spectrum and their line core originates in the upper chromosphere, just below the transition region. C…
Effects of spectral resolution on simple magnetic field diagnostics of the Mg II h & k lines
Rebecca Centeno, Matthias Rempel, Roberto Casini +1
We study the effects of finite spectral resolution on the magnetic field values retrieved through the weak field approximation (WFA) from the cores of the Mg II h & k lines. The re…
Ultraviolet Spectropolarimetry With Polstar: Using Polstar to test Magnetospheric Mass-loss Quenching
M. E. Shultz, R. Casini, M. C. M. Cheung +17
Polstar is a proposed NASA MIDEX space telescope that will provide high-resolution, simultaneous full-Stokes spectropolarimetry in the far ultraviolet, together with low-resolution…
The European Solar Telescope
C. Quintero Noda, R. Schlichenmaier, L. R. Bellot Rubio +14
The European Solar Telescope (EST) is a project aimed at studying the magnetic connectivity of the solar atmosphere, from the deep photosphere to the upper chromosphere. Its design…
Quiet Sun Center to Limb Variation of the Linear Polarization Observed by CLASP2 Across the Mg II h & k Lines
L. A. Rachmeler, J. Trujillo Bueno, D. E. McKenzie +25
The CLASP2 (Chromospheric LAyer SpectroPolarimeter 2) sounding rocket mission was launched on 2019 April 11. CLASP2 measured the four Stokes parameters of the Mg II h & k spectral…
Ultraviolet Spectropolarimetry: Investigating stellar magnetic field diagnostics
C. P. Folsom, R. Ignace, C. Erba +9
Magnetic fields are important for stellar photospheres and magnetospheres, influencing photospheric physics and sculpting stellar winds. Observations of stellar magnetic fields are…
TIC: A Stokes inversion code for scattering polarization with partial frequency redistribution and arbitrary magnetic fields
H. Li, T. del Pino Alemán, J. Trujillo Bueno +1
We present the Tenerife Inversion Code (TIC), which has been developed to infer the magnetic and plasma properties of the solar chromosphere and transition region via full-Stokes i…
Ultraviolet Spectropolarimetry With Polstar: Hot Star Magnetospheres
M. E. Shultz, R. Casini, M. C. M. Cheung +17
Polstar is a proposed NASA MIDEX space telescope that will provide high-resolution, simultaneous full-Stokes spectropolarimetry in the far ultraviolet, together with low-resolution…
Convolutional Neural Networks and Stokes Response Functions
Rebecca Centeno, Natasha Flyer, Lipi Mukherjee +4
In this work, we study the information content learned by a convolutional neural network (CNN) when trained to carry out the inverse mapping between a database of synthetic Ca II i…
The impact of limited time resolution on the forward-scattering polarization in the solar Sr I 4607 Å line
T. del Pino Alemán, J. Trujillo Bueno
Theoretical investigations predicted that high spatio-temporal resolution observations in the Sr I 4607 A line must show a conspicuous scattering polarization pattern at the solar…
Magnetic Imaging of the Outer Solar Atmosphere (MImOSA): Unlocking the driver of the dynamics in the upper solar atmosphere
H. Peter, E. Alsina Ballester, V. Andretta +20
The magnetic activity of the Sun directly impacts the Earth and human life. Likewise, other stars will have an impact on the habitability of planets orbiting these host stars. The…