Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Alan C. Calder"'
Autor:
Catherine Feldman, Nathanael Gutierrez, Ellis Eisenberg, Donald E. Willcox, Dean M. Townsley, Alan C. Calder
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 2, p 112 (2023)
The dimmest and most numerous outlier of the Type Ia supernova population, the Type Iax event, is increasingly being found in the results of observational campaigns. There is currently no single accepted model to describe these events. This 2D study
Externí odkaz:
https://doaj.org/article/7a2977b38edc4eda997e1e349b7f08f1
Autor:
Alan C. Calder, Catherine Feldman, Eva Siegmann, John Dey, Anthony Curtis, Smeet Chheda, Robert J. Harrison
We present efforts at improving the performance of FLASH, a multi-scale, multi-physics simulation code principally for astrophysical applications, by using huge pages on Ookami, an HPE Apollo 80 A64FX platform. FLASH is written principally in modern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cad58f40acdda1574a0dbf4b2266dc17
http://arxiv.org/abs/2207.13685
http://arxiv.org/abs/2207.13685
Autor:
Robert L. DeLeon, Yan Kang, Tony Curtis, Eric Raut, Daniel G. Wood, Firat Coskun, Andrew Burford, Benjamin Michalowicz, Barbara Chapman, Dossay Oryspayev, Joseph P. White, Robert W. Harrison, Nikolay A. Simakov, Alan C. Calder, Mathew Jones, David E. Carlson, Eva Siegmann, Catherine Feldman
Publikováno v:
PEARC
Ookami is a computer technology testbed supported by the United States National Science Foundation. It provides researchers with access to the A64FX processor developed by Fujitsu in collaboration with RIK{\Xi}N for the Japanese path to exascale comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29619260a89c5e74ff115c966157d3ea
https://doi.org/10.1145/3437359.3465578
https://doi.org/10.1145/3437359.3465578
Publikováno v:
The Astrophysical Journal, vol 887, iss 2
Author(s): Augustine, CN; Willcox, DE; Brooks, J; Townsley, DM; Calder, AC | Abstract: The creation of "hybrid" white dwarfs, made of a C-O core within an O-Ne shell has been proposed, and studies indicate that ignition in the C-rich central region m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be5db7c7a012bf783051ae1af632f680
https://escholarship.org/uc/item/9pb665j2
https://escholarship.org/uc/item/9pb665j2
Autor:
Desmond Shangase, Michael Zingale, Alan C. Calder, D. E. Willcox, Dean M. Townsley, Christopher J. DeGrendele
Thermonuclear (type Ia) supernovae are bright stellar explosions with the unique property that the light curves can be standardized, allowing them to be used as distance indicators for cosmological studies. Many fundamental questions bout these event
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ced4d334c88949683fc7bf8911fac6c
Autor:
Alan C. Calder, Dean M. Townsley
Publikováno v:
Simulation Foundations, Methods and Applications ISBN: 9783319707655
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b9787481c610117f308020ffc4df772
https://doi.org/10.1007/978-3-319-70766-2_28
https://doi.org/10.1007/978-3-319-70766-2_28
Publikováno v:
Journal of Physics: Conference Series. 1623:012003
We present a study of how a low-temperature accreted atmosphere influences the emitted X-ray spectrum of a neutron star. The atmosphere models and spectra were computed with Zcode, a multigroup radiation transfer code developed at the Los Alamos Nati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa54ae9e72acba4bbd3c9150f69e4d54
https://doi.org/10.1088/1742-6596/1623/1/012003
https://doi.org/10.1088/1742-6596/1623/1/012003
Publikováno v:
Journal of Physics: Conference Series. 1225:012004
Supernovae of type Ia are thought to arise from the thermonuclear incineration of a carbon-oxygen white dwarf stellar remnant. However, the detailed explosion scenario and stellar evolutionary origin scenario -- or scenarios -- which lead to observed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36211208af40d6b8c5672abc7d104d22
https://doi.org/10.1088/1742-6596/1225/1/012004
https://doi.org/10.1088/1742-6596/1225/1/012004
Autor:
Anshu Dubey, Lynn B. Reid, J Brad Gallagher, Klaus Weide, Chris Daley, Katie Antypas, Robert Rosner, Kevin Olson, Alan C. Calder, Dongwook Lee, Paul M. Ricker, Paul Rich, D. Q. Lamb, John ZuHone, Natasha Vladimirova, Bruce Fryxell, Noel T. Taylor, Katherine Riley, Andrew R. Siegel, F. X. Timmes
Publikováno v:
The International Journal of High Performance Computing Applications. 28:225-237
The FLASH code has evolved into a modular and extensible scientific simulation software system over the decade of its existence. During this time it has been cumulatively used by over a thousand researchers to investigate problems in astrophysics, co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ae16bf64880747ffa52c37351c49a7c
https://doi.org/10.1177/1094342013505656
https://doi.org/10.1177/1094342013505656
Publikováno v:
NASA Astrophysics Data System
We refine our previously introduced parameterized model for explosive carbon-oxygen fusion during thermonuclear supernovae (SN Ia) by adding corrections to post-processing of recorded Lagrangian fluid element histories to obtain more accurate isotopi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95b698096611bc6a0f2f8bc1e9b93a43
http://arxiv.org/abs/1605.04878
http://arxiv.org/abs/1605.04878