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Plasma astrophysics

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A field of physics that is growing in interest worldwide that tackles such astrophysical phenomena as the source of violent space weather and the formation of stars.

A better way to simulate accretion of the supermassive black hole at the center of the Milky Way is developed by PPPL and Princeton scientists

Scientists at Princeton University and the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) have developed a rigorous new method for modeling the accretion disk that feeds the supermassive black hole at the center of our Milky Way galaxy. The paper, published online in December in the journal Physical Review Letters, provides a much-needed foundation for simulation of the extraordinary processes involved. 

Magnetic reconnection research sheds light on explosive phenomena in astrophysics and fusion experiments

Scientists are closer than ever to unraveling a process called magnetic reconnection that triggers explosive phenomena throughout the universe.  Solar flares, northern lights and geomagnetic storms that can disrupt cell phone service and black out power grids are all set off by magnetic field lines that converge, break apart and violently reconnect in ways that are not fully understood.

Magnetic reconnection research sheds light on explosive phenomena in astrophysics and fusion experiments

Scientists are closer than ever to unraveling a process called magnetic reconnection that triggers explosive phenomena throughout the universe.  Solar flares, northern lights and geomagnetic storms that can disrupt cell phone service and black out power grids are all set off by magnetic field lines that converge, break apart and violently reconnect in ways that are not fully understood.

PPPL and Princeton researchers propose an explanation for the mysterious onset of a universal process

Scientists at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) and Princeton University have proposed a groundbreaking solution to a mystery that has puzzled physicists for decades. At issue is how magnetic reconnection, a universal process that sets off solar flares, northern lights and cosmic gamma-ray bursts, occurs so much faster than theory says should be possible.

PPPL and Princeton researchers propose an explanation for the mysterious onset of a universal process

Scientists at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) and Princeton University have proposed a groundbreaking solution to a mystery that has puzzled physicists for decades. At issue is how magnetic reconnection, a universal process that sets off solar flares, northern lights and cosmic gamma-ray bursts, occurs so much faster than theory says should be possible.

COLLOQUIUM: Solving magnetic reconnection, one plasmoid at a time

Magnetic reconnection is a central problem of plasma physics, key to a wide range of phenomena, from astrophysics (flares, jets, dynamo) to the laboratory (e.g., the sawtooth and tearing instabilities in magnetic fusion).

Throughout the last decade, the prolific combination of experiments, analytical theory and state-of-the-art simulations has delivered a radical overhaul of our understanding of reconnection. This talk aims to overview some of this recent progress, discuss its implications and reflect on future directions for the field.

Structure-preserving Geometric Algorithms & Exascale Computing

It is difficult for the standard numerical algorithms currently adopted by the plasma physics community to meet the long-term accuracy and fidelity requirement in large-scale numerical studies of multi-scale, complex dynamics of plasmas in space and laboratory. To overcome this difficulty, researchers have been actively developing a new generation of numerical algorithms that preserve the geometric structures, such as the symplectic structure, of theoretical models in plasma physics.

New books by PPPL physicists Hutch Neilson and Amitava Bhattacharjee highlight magnetic fusion energy and plasma physics

Magnetic fusion energy and the plasma physics that underlies it are the topics of ambitious new books by Hutch Neilson, head of the Advanced Projects Department at PPPL, and Amitava Bhattacharjee, head of the Theory Department at the Laboratory. The books describe where research on magnetic fusion energy comes from and where it is going, and provide a basic understanding of the physics of plasma, the fourth state of matter that makes up 99 percent of the visible universe.

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Princeton Plasma Physics Laboratory is a U.S. Department of Energy national laboratory managed by Princeton University.

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