Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Harris, J. Austin"'
We consider particle systems described by moments of a phase-space density and propose a realizability-preserving numerical method to evolve a spectral two-moment model for particles interacting with a background fluid moving with nonrelativistic vel
Externí odkaz:
http://arxiv.org/abs/2309.04429
Autor:
Sieverding, Andre, Waldrop, Preston G., Harris, J. Austin, Hix, W. Raphael, Lentz, Eric J., Bruenn, Stephen W., Messer, O. E. Bronson
After decades, the theoretical study of core-collapse supernova explosions is moving from parameterized, spherically symmetric models to increasingly realistic multi-dimensional simulations. Obtaining nucleosynthesis yields based on such multi-dimens
Externí odkaz:
http://arxiv.org/abs/2212.06507
Autor:
Bruenn, Stephen W., Sieverding, Andre, Lentz, Eric J., Sukhbold, Tuguldur, Hix, W. Raphael, Huk, Leah N., Harris, J. Austin, Messer, O. E. Bronson, Mezzacappa, Anthony
Publikováno v:
ApJ, 2023, 497, 35
We compare the core-collapse evolution of a pair of 15.8 $M_\odot$ stars with significantly different internal structures, a consequence of bimodal variability exhibited by massive stars during their late evolutionary stages. The 15.78 and 15.79 $M_\
Externí odkaz:
http://arxiv.org/abs/2211.12675
Autor:
Elwasif, Wael, Godoy, William, Hagerty, Nick, Harris, J. Austin, Hernandez, Oscar, Joo, Balint, Kent, Paul, Lebrun-Grandie, Damien, Maccarthy, Elijah, Vergara, Veronica G. Melesse, Messer, Bronson, Miller, Ross, Opal, Sarp, Bastrakov, Sergei, Bussmann, Michael, Debus, Alexander, Steinger, Klaus, Stephan, Jan, Widera, Rene, Bryngelson, Spencer H., Berre, Henry Le, Radhakrishnan, Anand, Young, Jefferey, Chandrasekaran, Sunita, Ciorba, Florina, Simsek, Osman, Spiga, Kate Clark Filippo, Hammond, Jeff, Hardy, John E. Stone. David, Keller, Sebastian, Trott, Jean-Guillaume Piccinali. Christian
Publikováno v:
Proceedings of the HPC Asia 2023 Workshops, pg 35-49
This paper assesses and reports the experience of ten teams working to port,validate, and benchmark several High Performance Computing applications on a novel GPU-accelerated Arm testbed system. The testbed consists of eight NVIDIA Arm HPC Developer
Externí odkaz:
http://arxiv.org/abs/2209.09731
Autor:
Dubey, Anshu, Weide, Klaus, O'Neal, Jared, Dhruv, Akash, Couch, Sean, Harris, J. Austin, Klosterman, Tom, Jain, Rajeev, Rudi, Johann, Messer, Bronson, Pajkos, Michael, Carlson, Jared, Chu, Ran, Wahib, Mohamed, Chawdhary, Saurabh, Ricker, Paul M., Lee, Dongwook, Antypas, Katie, Riley, Katherine M., Daley, Christopher, Ganapathy, Murali, Timmes, Francis X., Townsley, Dean M., Vanella, Marcos, Bachan, John, Rich, Paul, Kumar, Shravan, Endeve, Eirik, Hix, W. Raphael, Mezzacappa, Anthony, Papatheodore, Thomas
Publikováno v:
SoftwareX, Volume 19, 2022, 101168,ISSN 2352-7110
Flash-X is a highly composable multiphysics software system that can be used to simulate physical phenomena in several scientific domains. It derives some of its solvers from FLASH, which was first released in 2000. Flash-X has a new framework that r
Externí odkaz:
http://arxiv.org/abs/2208.11630
Autor:
Mezzacappa, Anthony, Marronetti, Pedro, Landfield, Ryan E., Lentz, Eric J., Hix, W. Raphael, Harris, J. Austin, Bruenn, Stephen W., Blondin, John M., Messer, O. E. Bronson, Casanova, Jordi, Kronzer, Luke L.
We present gravitational wave emission predictions based on three core collapse supernova simulations corresponding to three different progenitor masses. The masses span a large range, between 9.6 and 25 Solar masses, are all initially non-rotating,
Externí odkaz:
http://arxiv.org/abs/2208.10643
Thermonuclear supernovae are the result of the violent unbinding of a white dwarf, but the precise nature of the explosion mechanism(s) is a matter of active debate. To this end, several specific scenarios have been proposed to explain the observable
Externí odkaz:
http://arxiv.org/abs/2205.12370
Autor:
Sandoval, Michael A., Hix, W. Raphael, Messer, O. E. Bronson, Lentz, Eric J., Harris, J. Austin
Publikováno v:
ApJ 921 113 (2021)
We present three-dimensional simulations of core-collapse supernovae using the FLASH code that follow the progression of the explosion to the stellar surface, starting from neutrino-radiation hydrodynamic simulations of the neutrino-driven phase perf
Externí odkaz:
http://arxiv.org/abs/2106.01389
Neutrino-matter interactions play an important role in core-collapse supernova (CCSN) explosions as they contribute to both lepton number and/or four-momentum exchange between neutrinos and matter, and thus act as the agent for neutrino-driven explos
Externí odkaz:
http://arxiv.org/abs/2102.02186
Autor:
Mezzacappa, Anthony, Marronetti, Pedro, Landfield, Ryan E., Lentz, Eric J., Yakunin, Konstantin N., Bruenn, Stephen W., Hix, W. Raphael, Messer, O. E. Bronson, Endeve, Eirik, Blondin, John M., Harris, J. Austin
Publikováno v:
Physical Review D 102, 023027 (2020)
We report on the gravitational wave signal computed in the context of a three-dimensional simulation of a core collapse supernova explosion of a 15 Solar mass star. The simulation was performed with our neutrino hydrodynamics code Chimera. We detail
Externí odkaz:
http://arxiv.org/abs/2007.15099