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Astrophysics

Science

Delving into the Dark Sky

When Mike Warren was a graduate student 20 years ago, computational astrophysicists were conducting simulations of the universe’s structure with a million particles representing large masses of matter like galaxy clusters. Simulations of galaxy formation were beginning to supplement the maps and catalogs researchers were creating with telescope and detector…
Katie Elyce Jones
August 16, 2016
Science

Mastering Magnetic Reconnection

For 5 years a team led by William Daughton of Los Alamos National Laboratory has been simulating magnetic reconnection in space using the Cray XK7 Titan supercomputer and its predecessor, the Cray XT5 Jaguar supercomputer. The team’s simulations support the National Aeronautics and Space Administration’s Magnetospheric Multiscale Mission.
Eric Gedenk
June 16, 2015
People

Supernova Summer School Along the Road to Exascale

Oak Ridge National Laboratory’s (ORNL’s) Bronson Messer shared his knowledge on this subject during the 2014 International Summer School on AstroComputing (ISSAC), held at the University of California’s High-Performance AstroComputing Center (UC-HiPACC) in San Diego, from July 21 to August 1.
OLCF Staff Writer
October 14, 2014
Science

Reconnecting the Dots

Of particular importance to Bhattacharjee’s team is reconnection and shocks in systems where the plasma particles do not collide very often, both of which can serve as mechanisms for cosmic ray acceleration.
Scott Jones
August 20, 2014
People

Wells meets AAS

The OLCF’s Jack Wells was an invited speaker at the American Astronomical Society’s (AAS’s) Exascale Radio Astronomy conference from March 30 to April 4 in Monterrey, CA, where he detailed recent advances in computational astrophysics on Department of Energy supercomputing systems such as Titan.
Scott Jones
June 30, 2014
Science

When Worlds Collide

Homa Karimabadi’s team, in close collaboration with William Daughton at Los Alamos National Laboratory, is currently using the OLCF’s Jaguar supercomputer to better understand the processes giving rise to space weather.
Scott Jones
February 6, 2012
Science

ORNL Supercomputers Help Studies of Supernovas, Space

Image showing the asymmetric and turbulent flame that has consumed a white dwarf star in a type Ia supernova explosion. (Image credit: Daniel Kasen, UCSC) Researchers use Jaguar to simulate ignition in type Ia supernova explosions. Type Ia supernovas are the largest thermonuclear explosions in nature, expelling mass greater than…
OLCF Staff Writer
September 28, 2009