483 citations · 1.5k across the 27 of their papers we have counts for
28 papers
Energy Partitioning at the Termination Shock
Judit Szente, Bart van der Holst, Gabor Toth +1
We show new results of a global 3D magnetohydrodynamic (MHD) simulation of the Boston University outer heliosphere model where we used a newly developed approach that distributes t…
The Effects of Energy Conservation in Simulating Solar Eruptions
Xianyu Liu, Spiro K. Antiochos, Nishtha Sachdeva +6
Strict energy conservation is, perhaps, the most basic principle in all physics, but has proven to be difficult to satisfy in numerical simulations of solar eruptions. The Alfvén W…
Effects of the Background Magnetic Field on Flux Rope Eruptions
Xianyu Liu, Spiro K. Antiochos, Igor V. Sokolov +5
Solar eruptive events are generally believed to involve magnetic flux ropes (MFR), formed either in the pre-eruptive phase of the event or during the eruption itself. These MFR eru…
Global Multi-ion Solar Wind Model. I. Ion Temperatures
Bart van der Holst, Judit Szente, Enrico Landi
Over the past several decades, observations have shown that minor ions have a higher temperature and flow faster than protons in the solar wind. Theories based on turbulence have b…
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 Driven from GONG Magnetograms in the Last Solar Cycle
Zhenguang Huang, Gabor Toth, Nishtha Sachdeva +1
In a previous study, Huang et al. (2023) used the Alfven Wave Solar atmosphere Model (AWSoM), one of the widely used solar wind models in the community, driven by ADAPT-GONG magnet…
Analytic Model and Magnetohydrodynamic Simulations of Three-dimensional Magnetic Switchbacks
Chen Shi, Marco Velli, Gabor Toth +5
Parker Solar Probe observations reveal that the near-Sun space is almost filled with magnetic switchbacks (``switchbacks'' hereinafter), which may be a major contributor to the hea…
Non-equilibrium Ionization Effects on Synthetic Spectra in the AWSoM Solar Corona
Judit Szente, Enrico Landi, Bart van der Holst
In this work we combined AWSoM's non-equilibrium ionization [NEI] calculations from (Szente:2022) with the synthetic spectral computations of SPECTRUM (Szente:2019), to predict non…
Formation of Magnetic Switchbacks Observed by Parker Solar Probe
Gabor Toth, Marco Velli, Bart van der Holst
Magnetic switchbacks are rapid high amplitude reversals of the radial magnetic field in the solar wind that do not involve a heliospheric current sheet crossing. First seen sporadi…
Solar wind modeling with the Alfven Wave Solar atmosphere Model driven by HMI-based Near-Real-Time maps by the National Solar Observatory
Nishtha Sachdeva, Ward B Manchester, Igor Sokolov +6
We explore model performance for the Alfven Wave Solar atmosphere Model (AWSoM) with near-real-time (NRT) synoptic maps of the photospheric vector magnetic field. These maps, produ…
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…
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…
Threaded-Field-Lines Model for the Low Solar Corona Powered by the Alfven Wave Turbulence
Igor V. Sokolov, Bart van der Holst, Ward B. Manchester +6
We present an updated global model of the solar corona, including the transition region. We simulate the realistic tree-dimensional (3D) magnetic field using the data from the phot…
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…
Global Numerical Modeling of Energetic Proton Acceleration in a Coronal Mass Ejection Traveling through the Solar Corona
Kamen A. Kozarev, Rebekah M. Evans, Nathan A. Schwadron +4
The acceleration of protons and electrons to high (sometimes GeV/nucleon) energies by solar phenomena is a key component of space weather. These solar energetic particle (SEP) even…
Alfvén Wave Turbulence as a Coronal Heating Mechanism: Simultaneously Predicting the Heating Rate and the Wave-Induced Emission Line Broadening
R. Oran, E. Landi, B. van der Holst +2
In the present work, we test the predictions of the AWSoM model, a global extended-MHD model capable of calculating the propagation and turbulent dissipation of Alfvén waves in any…
Alfven Wave Solar Model (AWSoM): Coronal Heating
Bart van der Holst, Igor V. Sokolov, Xing Meng +4
We present a new version of the Alfven Wave Solar Model (AWSoM), a global model from the upper chromosphere to the corona and the heliosphere. The coronal heating and solar wind ac…
A Global Wave-Driven MHD Solar Model with a Unified Treatment of Open and Closed Magnetic Field Topologies
R. Oran, B. van der Holst, E. Landi +3
We describe, analyze and validate the recently developed Alfvén Wave Solar Model (AWSoM), a 3D global model starting from the top of the chromosphere and extending into interplanet…
MHD Waves and Coronal Heating: Unifying Empirical and MHD Turbulence Models
Igor V. Sokolov, Bart van der Holst, Rona Oran +6
We present a new global model of the solar corona, including the low corona, the transition region and the top of chromosphere. The realistic 3D magnetic field is simulated using t…
Simulating the long-term evolution of radiative shocks in shock tubes
B. van der Holst, G. Toth, I. V. Sokolov +3
We present the latest improvements in the Center for Radiative Shock Hydrodynamics (CRASH) code, a parallel block-adaptive-mesh Eulerian code for simulating high-energy-density pla…
Buildup of Magnetic Shear and Free Energy During Flux Emergence and Cancellation
Fang Fang, Ward Manchester, William P. Abbett +1
We examine a simulation of flux emergence and cancellation, which shows a complex sequence of processes that accumulate free magnetic energy in the solar corona essential for the e…
Dynamic Coupling of Convective Flows and Magnetic Field during Flux Emergence
Fang Fang, Ward Manchester, William P. Abbett +1
We simulate the buoyant rise of a magnetic flux rope from the solar convection zone into the corona to better understand the energetic coupling of the solar interior to the corona.…
Simulating radiative shocks in nozzle shock tubes
B. van der Holst, G. Toth, I. V. Sokolov +3
We use the recently developed Center for Radiative Shock Hydrodynamics (CRASH) code to numerically simulate laser-driven radiative shock experiments. These shocks are launched by a…