Results 31 to 40 of about 150 (116)

A Drag-force Analysis of Solar Wind White-light Tracers in the Inner Heliosphere

The Astrophysical Journal
We studied the propagation of blobs, which are a subset of density mesoscale structures observed in the solar corona. The detection of blobs in white-light data was performed during Solar Cycle 23.
Cynthia López-Portela, Mari Paz Miralles, Alejandro Lara   +2 more
doaj   +1 more source

Analysis of WISPR Images of the Near-Sun Heliospheric Current Sheet Region from Parker Solar Probe Encounters 4 and 5 and Comparison with the in Situ Observations

The Astrophysical Journal
We present an analysis of Wide-field Imager for Solar PRobe (WISPR) images of the near-Sun heliospheric current sheet (HCS) region from the Parker Solar Probe (PSP) in 2020 January and June.
Paulett C. Liewer, Samuel T. Badman, Mark Linton, T. D. Phan, Guillermo Stenborg, Angelos Vourlidas   +5 more
doaj   +1 more source

Production of Sunspots and Their Effects on the Corona and Solar Wind: Insights from a New 3D Flux-Transport Dynamo Model

Frontiers in Astronomy and Space Sciences, 2018
We present a three-dimensional numerical model for the generation and evolution of the magnetic field in the solar convection zone, in which sunspots are produced and contribute to the cyclic reversal of the large-scale magnetic field. We then assess the
Rohit Kumar, Laurène Jouve, Rui F. Pinto, Alexis P. Rouillard   +3 more
doaj   +1 more source

Radio Signature of the Strong Compression between a Streamer and a Coronal Hole Boundary

The Astrophysical Journal Letters
We present evidence of the first detection of the radio signature at metric wavelengths of the strong compression between a helmet streamer (HS) and the boundary of a coronal hole (CH) using radio observations from the Callisto MEXICO-LANCE and ALASKA ...
E. Aguilar-Rodriguez, A. Vourlidas, P. Corona-Romero, C. Monstein, W. D. Reeve, E. Romero-Hernandez, E. Andrade-Mascote, P. Villanueva-Hernandez, I. A. Peralta-Mendoza, J. E. Perez-Leon, E. Perez-Tijerina   +10 more
doaj   +1 more source

Imaging the Solar Corona from “Within”: A Cutting-edge Approach to Enhance PSP/WISPR Imagery

The Astrophysical Journal Supplement Series
The unprecedented remote-sensing observations obtained by the Wide Field Imager for Solar Probe (WISPR) on board the Parker Solar Probe (PSP) from distances inside Mercury’s orbit are revolutionizing our perception of the fine-scale morphology and ...
Guillermo Stenborg, Angelos Vourlidas, Russell A. Howard   +2 more
doaj   +1 more source

The Coronal Plasma Density Structure over a Solar Cycle: A Comparison of Tomography and Magnetohydrodynamic Simulations

The Astrophysical Journal
The large-scale plasma density structure of the extended solar corona is a tracer of the underlying magnetic field configuration and dictates the structure of the solar wind in interplanetary space.
Liam T. Edwards, Huw Morgan, Pete Riley, Jon A. Linker   +3 more
doaj   +1 more source

The solar wind heavy ion composition in the ascending phases of the solar cycles 23 and 25

Frontiers in Astronomy and Space Sciences
The approximately 11-year solar cycle has been shown to impact the heavy ion composition of the solar wind, even when accounting for streams of differing speeds; however, the heavy ion composition observed between the same specific phases of a past solar
D. T. Carpenter, S. T. Lepri, L. Zhao, R. M. Dewey, J. M. Raines, S. Livi, S. Livi, A. B. Galvin, L. M. Kistler   +8 more
doaj   +1 more source

Defining the Middle Corona. [PDF]

Sol Phys, 2023
West MJ, Seaton DB, Wexler DB, Raymond JC, Del Zanna G, Rivera YJ, Kobelski AR, Chen B, DeForest C, Golub L, Caspi A, Gilly CR, Kooi JE, Meyer KA, Alterman BL, Alzate N, Andretta V, Auchère F, Banerjee D, Berghmans D, Chamberlin P, Chitta LP, Downs C, Giordano S, Harra L, Higginson A, Howard RA, Kumar P, Mason E, Mason JP, Morton RJ, Nykyri K, Patel R, Rachmeler L, Reardon KP, Reeves KK, Savage S, Thompson BJ, Van Kooten SJ, Viall NM, Vourlidas A, Zhukov AN.   +41 more
europepmc   +1 more source

Synthetic Remote-sensing and In Situ Observations of Fine-scale Structure in a Pseudostreamer Coronal Mass Ejection through the Solar Corona

The Astrophysical Journal Supplement Series
Coronal pseudostreamer flux systems have a specific magnetic configuration that influences the morphology and evolution of coronal mass ejections (CMEs) from these regions. Here we continue the analysis of the Wyper et al.
B. J. Lynch, P. F. Wyper, E. Palmerio, L. Casillas, J. T. Dahlin, L. K. S. Daldorff, S. E. Guidoni, A. K. Higginson, P. Kumar, A. Liberatore, P. C. Liewer, O. Panasenco, P. Penteado, M. Velli   +13 more
doaj   +1 more source

Can MHD Oscillations Modulate Quasi-periodic Plasma Release from Coronal Streamers?

The Astrophysical Journal
Periodic density structures (PDS) in the slow solar wind are associated with quasi-periodic plasma release from coronal streamer and open–closed boundary regions, but the origin of their organization remains uncertain.
O. Podladchikova
doaj   +1 more source