Results 91 to 100 of about 3,875 (223)

Dynamics of the solar photosphere with IBIS

, 2006
Context.We investigate the quiet solar photosphere with the new Interferometric BI-dimensional Spectrometer (IBIS), recently installed at the Dunn Solar Telescope of the National Solar Observatory, Sacramento Peak, NM.Aims.
G. Cauzzi, K. Janssen
core   +1 more source

Origin of Line Broadening in Fading Granules: Influence of Small-scale Turbulence

The Astrophysical Journal
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 velocities is challenging because of the limited instrumental resolution ...
Ryohtaroh T. Ishikawa, Yukio Katsukawa
doaj   +1 more source

Assessment of DKIST/VTF capabilities for the detection of local acoustic source wavefronts

Frontiers in Astronomy and Space Sciences
IntroductionRecent studies have demonstrated that temporal filtering can successfully identify local acoustic source wavefronts in radiative magnetohydrodynamic simulations of the solar photosphere.
Corinne Morrell, Corinne Morrell, Mark P. Rast, Mark P. Rast, Shah Mohammad Bahauddin, Shah Mohammad Bahauddin, Ivan Milić   +6 more
doaj   +1 more source

The formation and stability of Petschek reconnection

, 2014
E. R. Priest is grateful to the Leverhulme Trust. T. G. Forbes received support from NASA grant NNX-10AC04G to the University of New Hampshire. H. Baty acknowledges support by French National Research Agency (ANR) through Grant ANR-13-JS05-0003-01 ...
E. R. Priest, Priest, E.R., Baty, H., T. G. Forbes, Forbes, T.G., H. Baty   +5 more
core   +1 more source

Torsional oscillations within a magnetic pore in the solar photosphere

, 2021
Spectropolarimetric observations of a solar pore at high temporal and spatial resolution identify the presence of magnetic field torsional oscillations.
Boocock C., Nelson C. J., Stangalini M., Del Moro D., Korsos M. B., Erdelyi R., Tsiklauri D., Berrilli F.   +7 more
core   +1 more source

Inferring Photospheric Horizontal Flows from Multiple Observations with SUVEL Models

The Astrophysical Journal
Photospheric horizontal velocity fields play essential roles in the formation and evolution of numerous solar activities. Various methods for estimating the horizontal velocity field have been proposed in the past.
Quan Xie, Jiajia Liu, Robert Erdélyi, Yuming Wang   +3 more
doaj   +1 more source

MHD simulations of the solar photosphere

, 2012
We briefly review the observations of the solar photosphere and pinpoint some open questions related to the magnetohydrodynamics of this layer of the Sun. We then discuss the current modelling efforts, addressing among other problems,
T. Roudier, M. Rieutord, F. Rincon
core   +1 more source

Refinements to the Solar Polar Magnetic Flux: Implications from Inversion Methodologies

The Astrophysical Journal
The magnetic fields in the solar polar region are important to our understanding of the internal dynamo process, the global coronal structure, and the origin of the solar wind.
Bryan Yamashiro, Xudong Sun, Ivan Milić, Carlos Quintero Noda, Adur Pastor Yabar, Rebecca Centeno, Jiayi Liu, Milan Gošić, Kai Yang   +8 more
doaj   +1 more source

Wavelet analysis of spatial coherent structures in the photosphere

, 1999
In this work we present some applications of wavelet analysis to the dynamics of the photosphere as obtained from a good serie of high spatial resolution white light images taken at the Vacuum Tower Telescope (VTT) at the NSO/SPO in October 1996. The use
Berrilli, F, Bruno, R, Bavassano, B., PIETROPAOLO, Ermanno, Straus, T, Cauzzi, G, Smaldone, LA, Consolini, G   +7 more
core  

Three-minute wave enhancement in the solar photosphere [PDF]

, 2012
It is a well-known result that the power of five-minute oscillations is progressively reduced by magnetic fields in the solar photosphere. Many authors have pointed out that this could be due to a complex interaction of many processes: opacity effects ...
DEL MORO, DARIO, BERRILLI, FRANCESCO, Giannattasio, F, Stangalini, M   +3 more
core   +1 more source