Results 51 to 60 of about 235 (149)

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

Polarization Measurements Of Solar Radio Transients Associated With Coronal Mass Ejections

, 2017
The Solar Corona is a teneous medium of magnetized plasma with an inherent distribution of number density of electrons which decreases as one moves radially outward from the sun. Transient radio emissions from the corona are often-observed over a wide-range of radio frequencies from few Ghz down to a few kHz which correspond to coronal regions closer ...
openaire   +1 more source

Connecting Solar Wind Velocity Spikes Measured by Solar Orbiter and Coronal Brightenings Observed by SDO

The Astrophysical Journal Letters
The Parker Solar Probe's discovery that magnetic switchbacks and velocity spikes in the young solar wind are abundant has prompted intensive research into their origin(s) and formation mechanism(s) in the solar atmosphere.
Chuanpeng Hou, Alexis P. Rouillard, Jiansen He, Bahaeddine Gannouni, Victor Réville, Philippe Louarn, Andrey Fedorov, Lubomír Přech, Christopher J. Owen, Daniel Verscharen, Raffaella D’Amicis, Luca Sorriso-Valvo, Naïs Fargette, Jesse Coburn, Vincent Génot, Jim M. Raines, Roberto Bruno, Stefano Livi, Benoit Lavraud, Nicolas André, Gabriel Fruit, Rungployphan Kieokaew, Illya Plotnikov, Emmanuel Penou, Alain Barthe, Dhiren Kataria, Matthieu Berthomier, Frederic Allegrini, Vito Fortunato, Gennaro Mele, Timothy Horbury   +30 more
doaj   +1 more source

First Determination in the Extended Corona of the 2D Thermal Evolution of a Current Sheet after a Solar Eruption

The Astrophysical Journal
For the first time the evolution of the coronal reconfiguration after a coronal mass ejection (CME) was observed by the multichannel Metis Coronagraph on board the ESA–Solar Orbiter mission. The images acquired in visible light (VL) between 3.0 and 5.4 R
Alessandro Bemporad, Guanglu Shi, Shuting Li, Beili Ying, Li Feng, Jun Lin, Lucia Abbo, Vincenzo Andretta, Aleksandr Burtovoi, Vania Da Deppo, Yara De Leo, Silvano Fineschi, Federica Frassati, Silvio Giordano, Catia Grimani, Giovanna Jerse, Federico Landini, Salvatore Mancuso, Giampiero Naletto, Gianalfredo Nicolini, Maurizio Pancrazzi, Marco Romoli, Giuliana Russano, Clementina Sasso, Daniele Spadaro, Marco Stangalini, Roberto Susino, Luca Teriaca, Michela Uslenghi   +28 more
doaj   +1 more source

A Coronal Mass Ejection Impacting Parker Solar Probe at 14 Solar Radii

The Astrophysical Journal
The relationship between CME properties in the corona and their interplanetary counterparts is not well understood. Until recently, a wide spatial gap existed between the two regions, which prevented us from disentangling the spatial and temporal ...
Carlos R. Braga, Vamsee Krishna Jagarlamudi, Angelos Vourlidas, Guillermo Stenborg, Teresa Nieves-Chinchilla   +4 more
doaj   +1 more source

Wave Generation via Oscillatory Reconnection at a Three-dimensional Magnetic Null Point

The Astrophysical Journal
This work conducts a three-dimensional (3D), nonlinear magnetohydrodynamic (MHD) simulation to investigate wave-generating, time-dependent reconnection around a magnetic null point.
Luiz A. C. A. Schiavo, Gert J. J. Botha, James A. McLaughlin   +2 more
doaj   +1 more source

Source Region and Launch Characteristics of Magnetic-arch-blowout Solar Coronal Mass Ejections Driven by Homologous Compact-flare Blowout Jets

The Astrophysical Journal
We study the formation of four coronal mass ejections (CMEs) originating from homologous blowout jets. All of the blowout jets originated from NOAA Active Region (AR) 11515 on 2012 July 2, within a time interval of ≈14 hr.
Binal D. Patel, Bhuwan Joshi, Alphonse C. Sterling, Ronald L. Moore   +3 more
doaj   +1 more source

Near Subsonic Solar Wind Outflow from an Active Region

The Astrophysical Journal
During Parker Solar Probe (Parker) Encounter 15 (E15), we observe an 18 hr period of near-subsonic ( M _S ∼ 1) and sub-Alfvénic (SA), M _A ⋘ 1, slow-speed solar wind from 22 to 15.6 R _⊙ . As the most extreme SA interval measured to date and skirting the
Tamar Ervin, Stuart D. Bale, Samuel T. Badman, Trevor A. Bowen, Pete Riley, Kristoff Paulson, Yeimy J. Rivera, Orlando Romeo, Nikos Sioulas, Davin Larson, Jaye L. Verniero, Ryan M. Dewey, Jia Huang   +12 more
doaj   +1 more source

Ensemble Modeling of the Solar Wind Flow with Boundary Conditions Governed by Synchronic Photospheric Magnetograms. I. Multipoint Validation in the Inner Heliosphere

The Astrophysical Journal
The solar wind (SW) is a vital component of space weather, providing a background for solar transients such as coronal mass ejections, stream interaction regions, and energetic particles propagating toward Earth.
Dinesha V. Hegde, Tae K. Kim, Nikolai V. Pogorelov, Shaela I. Jones, Charles N. Arge   +4 more
doaj   +1 more source

Solar Spicules, Filigrees, and Solar Wind Switchbacks

The Astrophysical Journal
Spicules, the smallest observable jetlike dynamic features ubiquitous in the chromosphere, are supposedly an important potential source for small-scale solar wind transients, with supporting evidence yet needed. We studied the high-resolution H α images (
Jeongwoo Lee, Haimin Wang, Jiasheng Wang, Meiqi Wang   +3 more
doaj   +1 more source