152 citations · 787 across the 20 of their papers we have counts for
20 papers
Evolution of Coronal Mass Ejections in Different Data-Driven Solar Wind Conditions
Nishtha Sachdeva, Zhenguang Huang, Gabor Toth +3
Numerical models of the solar wind and coronal mass ejections (CMEs) utilize photospheric magnetic field observations to prescribe the inner boundary conditions for the plasma solu…
Evidence of Time-Dependent Diffusive Shock Acceleration in the 2022 September 5 Solar Energetic Particle Event
Xiaohang Chen, Lulu Zhao, Joe Giacalone +15
On 2022 September 5, a large solar energetic particle (SEP) event was detected by Parker Solar Probe (PSP) and Solar Orbiter (SolO), at heliocentric distances of 0.07 and 0.71 au,…
Adjusting the Potential Field Source Surface Height Based on MHD Simulations
Zhenguang Huang, Gabor Toth, Jia Huang +3
A potential field solution is widely used to extrapolate the coronal magnetic field above the Sun's surface to a certain height. This model applies the current-free approximation a…
Solar Wind with Field Lines and Energetic Particles (SOFIE) Model: Application to Historical Solar Energetic Particle Events
Lulu Zhao, Igor Sokolov, Tamas Gombosi +7
In this paper, we demonstrate the applicability of the data-driven and self-consistent solar energetic particle model, Solar-wind with FIeld-lines and Energetic-particles (SOFIE),…
The Multiview Observatory for Solar Terrestrial Science (MOST)
N. Gopalswamy, S. Christe, S. F. Fung +54
We report on a study of the Multiview Observatory for Solar Terrestrial Science (MOST) mission that will provide comprehensive imagery and time series data needed to understand the…
Connecting Solar and Stellar Flares/CMEs: Expanding Heliophysics to Encompass Exoplanetary Space Weather
B. J. Lynch, B. E. Wood, M. Jin +25
The aim of this white paper is to briefly summarize some of the outstanding gaps in the observations and modeling of stellar flares, CMEs, and exoplanetary space weather, and to di…
Modeling the Solar Wind During Different Phases of the Last Solar Cycle
Zhenguang Huang, Gabor Toth, Nishtha Sachdeva +5
We describe our first attempt to systematically simulate the solar wind during different phases of the last solar cycle with the Alfvén Wave Solar atmosphere Model (AWSoM) develope…
Lambda And: A post-main sequence wind from a solar-mass star
D. O Fionnagain, A. A. Vidotto, P. Petit +5
We investigate the wind of lambda And, a solar-mass star that has evolved off the main sequence becoming a sub-giant. We present spectropolarimetric observations and use them to re…
Validation of the Alfvén Wave Solar atmosphere Model (AWSoM) with Observations from the Low Corona to 1 AU
N. Sachdeva, B. van der Holst, W. B. Manchester +9
We perform a validation study of the latest version of the Alfvén Wave Solar atmosphere Model (AWSoM) within the Space Weather Modeling Framework (SWMF). To do so, we compare the s…
Astro2020 Science White Paper: Synoptic Studies of the Sun as a Key to Understanding Stellar Astrospheres
Valentin Martinez Pillet, Frank Hill, Heidi Hammel +11
Ground-based solar observations provide key contextual data (i.e., the 'big picture') to produce a complete description of the only astrosphere we can study in situ: our Sun's heli…
Predictions for the First Parker Solar Probe Encounter
B. van der Holst, W. B. Manchester, K. G. Klein +1
We examine Alfvén Wave Solar atmosphere Model (AWSoM) predictions of the first Parker Solar Probe (PSP) encounter. We focus on the 12-day closest approach centered on the 1st perih…
Chromosphere to 1 AU Simulation of the 2011 March 7th Event: A Comprehensive Study of Coronal Mass Ejection Propagation
M. Jin, W. B. Manchester, B. van der Holst +5
We perform and analyze results of a global magnetohydrodyanmic (MHD) simulation of the fast coronal mass ejection (CME) that occurred on 2011 March 7. The simulation is made using…
Data Constrained Coronal Mass Ejections in A Global Magnetohydrodynamics Model
M. Jin, W. B. Manchester, B. van der Holst +6
We present a first-principles-based coronal mass ejection (CME) model suitable for both scientific and operational purposes by combining a global magnetohydrodynamics (MHD) solar w…
A Steady-State Picture of Solar Wind Acceleration and Charge State Composition Derived from a Global Wave-Driven MHD Model
Rona Oran, Enrico Landi, Bart van der Holst +7
The higher charge states found in slow (400km s) solar wind streams compared to fast streams have supported the hypothesis that the slow wind originates in closed coronal…
The Interaction of Two Coronal Mass Ejections: Influence of Relative Orientation
N. Lugaz, C. J. Farrugia, W. B. Manchester +1
We report on a numerical investigation of two coronal mass ejections (CMEs) which interact as they propagate in the inner heliosphere. We focus on the effect of the orientation of…
Newly Discovered Global Temperature Structures in the Quiet Sun at Solar Minimum
Zhenguang Huang, Richard A. Frazin, Enrico Landi +3
Magnetic loops are building blocks of the closed-field corona. While active region loops are readily seen in images taken at EUV and X-ray wavelengths, quiet Sun loops are seldom i…
The WHI Corona from Differential Emission Measure Tomography
Alberto M. Vásquez, Zhenguang Huang, Ward B. Manchester +1
A three dimensional (3D) tomographic reconstruction of the local differential emission measure (LDEM) of the global solar corona during the whole heliosphere interval (WHI, Carring…
Numerical Simulation of an EUV Coronal Wave Based on the February 13, 2009 CME Event Observed by STEREO
Ofer Cohen, Gemma D. R. Attrill, Ward B. Manchester +1
On 13 February 2009, a coronal wave -- CME -- dimming event was observed in quadrature by the STEREO spacecraft. We analyze this event using a three-dimensional, global magnetohydr…
Interactions of the magnetospheres of stars and close-in giant planets
O. Cohen, J. J. Drake, V. L. Kashyap +5
Since the first discovery of an extrasolar planetary system more than a decade ago, hundreds more have been discovered. Surprisingly, many of these systems harbor Jupiter-class gas…
Study of the April 20, 2007 CME-Comet Interaction Event with an MHD Model
Y. D. Jia, C. T. Russell, L. K. Jian +6
This study examines the tail disconnection event on April 20, 2007 on comet 2P/Encke, caused by a coronal mass ejection (CME) at a heliocentric distance of 0.34 AU. During their in…