77 citations · 201 across the 15 of their papers we have counts for
15 papers
Quantifying Poynting flux in the Quiet Sun Photosphere
Dennis Tilipman, Maria Kazachenko, Benoit Tremblay +3
Poynting flux is the flux of magnetic energy, which is responsible for chromospheric and coronal heating in the solar atmosphere. It is defined as a cross product of electric and m…
Limitations and biases in the retrieval of the polar magnetic field I: the role of the magnetic filling factor in Milne-Eddington inversions of simulated Hinode/SP data
Rebecca Centeno, Ivan Milić, Matthias Rempel +2
We study the extent to which Milne-Eddington inversions are able to retrieve and characterize the magnetic landscape of the solar poles from observations by the spectropolarimeter…
Constraining the systematics of (acoustic) wave heating estimates in the solar chromosphere
Momchil E. Molnar, Kevin P. Reardon, Steven R. Cranmer +2
Acoustic wave heating is believed to contribute significantly to the missing energy input required to maintain the solar chromosphere in its observed state. We studied the propagat…
Evaluating Non-LTE Spectral Inversions with ALMA and IBIS
Ryan Hofmann, Kevin Reardon, Ivan Milic +3
We present observations of a solar plage in the millimeter-continuum with the ALMA and in the Ca 8542 and Na 5896 spectral lines with the Interferometric BIdimensional Spectrometer…
Limitations of the Ca II 8542 Å line for the determination of magnetic field oscillations
T. Felipe, H. Socas Navarro, C. R. Sangeetha +1
Chromospheric umbral oscillations produce periodic brightenings in the core of some spectral lines, known as umbral flashes. They are also accompanied by fluctuations in velocity,…
The Lightweaver Framework for NLTE Radiative Transfer in Python
Christopher M J Osborne, Ivan Milić
Tools for computing detailed optically thick spectral line profiles out of local thermodynamic equilibrium have always been focused on speed, due to the large computational effort…
Are the Magnetic Fields Radial in the Solar Polar Region?
Xudong Sun, Yang Liu, Ivan Milić +1
We investigate the orientation of the photospheric magnetic fields in the solar polar region using observations from the Helioseismic and Magnetic Imager (HMI). Inside small patche…
Chromospheric resonances above sunspots and potential seismological applications
T. Felipe, C. Kuckein, S. J. González Manrique +2
Oscillations in sunspot umbrae exhibit remarkable differences between the photosphere and chromosphere. We evaluate two competing scenarios proposed for explaining those observatio…
Mimicking spectropolarimetric inversions using convolutional neural networks
Ivan Milic, Ricardo Gafeira
Interpreting spectropolarimetric observations of the solar atmosphere takes much longer than the acquiring the data. The most important reason for this is that the model fitting, o…
Using the infrared iron lines to probe solar subsurface convection
Ivan Milic, Smitha Narayanamurthy, Andreas Lagg
Studying the properties of the solar convection using high-resolution spectropolarimetry began in the early 90's with the focus on observations in the visible wavelength regions. I…
Spectropolarimetric NLTE inversion code SNAPI
Ivan Milic, Michiel van Noort
Inversion codes are computer programs that fit a model atmosphere to the observed Stokes spectra, thus retrieving the relevant atmospheric parameters. The rising interest in the so…
Inference of magnetic fields in inhomogeneous prominences
Ivan Milic, Marianne Faurobert, Olga Atanackovic
Most of the quantitative information about the magnetic field vector in solar prominences comes from the analysis of the Hanle effect acting on lines formed by scattering. As these…
Scattering line polarization in rotating, optically thick disks
Ivan Milic, Marianne Faurobert
To interpret observations of astrophysical disks it is essential to understand the formation process of the emitted light. If the disk is optically thick, scattering dominated and…
Accelerating NLTE radiative transfer by means of the Forth-and-Back Implicit Lambda Iteration: A two-level atom line formation in 2D Cartesian coordinates
Ivan Milic, Olga Atanackovic
State-of-the-art methods in multidimensional NLTE radiative transfer are based on the use of local approximate lambda operator within either Jacobi or Gauss-Seidel iterative scheme…
Boundary conditions for NLTE polarized radiative transfer with incident radiation
Marianne Faurobert, Ivan Milic, Olga Atanackovic
Polarized NLTE radiative transfer in the presence of scattering in spectral lines and/or in continua may be cast in a so-called reduced form for six reduced components of the radia…