46 citations · 112 across the 12 of their papers we have counts for
12 papers
Synthetic Ca II 8542 Å Stokes Profile Associated with Chromospheric Magnetic Reconnection in a Simulated Active Region
Xinyu Zhou, Takaaki Yokoyama, Haruhisa Iijima +4
Magnetic reconnection is an important driving mechanism of many chromospheric phenomena, e.g., UV bursts and chromospheric jets. Information about magnetic field is indispensable f…
Comparison of Polar Magnetic Fields Derived from MILOS and MERLIN Inversions with Hinode/SOT-SP Data
Masahito Kubo, Daikou Shiota, Yukio Katsukawa +8
The detailed investigation of the polar magnetic field and its time evolution is one of the major achievements of Hinode. Precise measurements of the polar magnetic field are essen…
Origin of line broadening in fading granule: influence of small-scale turbulence
Ryohtaroh T. Ishikawa, Yukio Katsukawa
In the quiet region of the solar photosphere, turbulent convective motions of the granular flows naturally drive the subgranular-scale flows. However, evaluating such small-scale v…
Magnetic diffusion in Solar atmosphere produces measurable electric fields
Tetsu Anan, Roberto Casini, Han Uitenbroek +13
The efficient release of magnetic energy in astrophysical plasmas, such as during solar flares, can in principle be achieved through magnetic diffusion, at a rate determined by the…
Persistent Homology analysis for solar magnetograms
Pablo Santamarina Guerrero, Yukio Katsukawa, Shin Toriumi +1
Understanding the magnetic fields of the Sun is essential for unraveling the underlying mechanisms driving solar activity. Integrating topological data analysis techniques into the…
The connection between internetwork magnetic elements and supergranular flows
D. Orozco Suárez, L. R. Bellot Rubio, Y. Katsukawa
The advection of internetwork magnetic elements by supergranular convective flows is investigated using high spatial resolution, high cadence, and high signal-to-noise ratio Na I D…
Solar horizontal flow evaluation using neural network and numerical simulation with snapshot data
Hiroyuki Masaki, Hideyuki Hotta, Yukio Katsukawa +1
We suggest a method that evaluates the horizontal velocity in the solar photosphere with easily observable values using a combination of neural network and radiative magnetohydrody…
Ground-based Synoptic Studies of the Sun
Sanjay Gosain, V. Martinez Pillet, A. Pevtsov +15
Ground-based synoptic solar observations provide critical contextual data used to model the large-scale state of the heliosphere. The next decade will see a combination of ground-b…
Diagnostic capabilities of spectropolarimetric observations for understanding solar phenomena I. Zeeman-sensitive photospheric lines
C. Quintero Noda, P. S. Barklem, R. Gafeira +7
Future ground-based telescopes will expand our capabilities for simultaneous multi-line polarimetric observations in a wide range of wavelengths, from the near-ultraviolet to the n…
The Solar Internetwork. II. Magnetic Flux Appearance and Disappearance Rates
Milan Gošić, Luis R. Bellot Rubio, Jose Carlos Del Toro Iniesta +2
Small-scale internetwork magnetic fields are important ingredients of the quiet Sun. In this paper we analyze how they appear and disappear on the solar surface. Using high resolut…
Requirements for the Analysis of Quiet Sun Internetwork Magnetic Elements with EST and ATST
D. Orozco Suárez, L. R. Bellot Rubio, Y. Katsukawa
The quiet Sun internetwork is permeated by weak and highly inclined magnetic fields whose physical properties, dynamics, and magnetic interactions are not fully understood. High sp…
A new type of small-scale downflow patches in sunspot penumbrae
Y. Katsukawa, J. Jurcak
A sunspot penumbra is observationally examined to reveal properties of small-scale flow structures and how they are related to the filamentary magnetic structures and the Evershed…