Zobrazeno 1 - 10
of 395
pro vyhledávání: '"Michael L. Norman"'
Autor:
John A. Regan, John H. Wise, Tyrone E. Woods, Turlough P. Downes, Brian W. O'Shea, Michael L. Norman
Publikováno v:
The Open Journal of Astrophysics, Vol 3 (2020)
We investigate the ab-initio formation of super-massive stars in a pristine atomic cooling halo. The halo is extracted from a larger self-consistent parent simulation. The halo remains metal-free and star formation is suppressed due to a combination
Externí odkaz:
https://doaj.org/article/22dfad2414684bd9a39ebe126e91c825
Publikováno v:
The Open Journal of Astrophysics, Vol 3 (2020)
The formation of supermassive stars has generally been studied under the assumption of rapid accretion of pristine metal-free gas. Recently it was found, however, that gas enriched to metallicities up to $Z \sim 10^{-3}$ Z$_{\odot}$ can also facilita
Externí odkaz:
https://doaj.org/article/f66da0861237424888e4d8d89d18ab24
Publikováno v:
The Open Journal of Astrophysics, Vol 3 (2020)
The formation of supermassive stars has generally been studied under the assumption of rapid accretion of pristine metal-free gas. Recently it was found, however, that gas enriched to metallicities up to Z + 10^-3 Solar can also facilitate supermassi
Externí odkaz:
https://doaj.org/article/96eaecfb6418477499e16491d77aa937
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 5 (2018)
We review two decades of progress using the Enzo hydrodynamic cosmology code to simulate the Cosmic Dawn, a period of roughly 1 billion years beginning with the formation of the first stars in the universe, and ending with cosmic reionization. Using
Externí odkaz:
https://doaj.org/article/b1b79e7e41f3497d9d171325457aa3ea
Autor:
Carsten Burstedde, Mohammed Wahib, Martin Berzins, Michael L. Norman, Anshu Dubey, Didem Unat, Konrad Hinsen
Publikováno v:
Computing in Science & Engineering. 23:62-66
Adaptive mesh refinement (AMR) is an important method that enables many mesh-based applications to run at effectively higher resolution within limited computing resources by allowing high resolution only where really needed. This advantage comes at a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70b6a7afa827568cd9f8d096c3322d88
https://doi.org/10.1109/mcse.2021.3099603
https://doi.org/10.1109/mcse.2021.3099603
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 492:3021-3031
Using the Renaissance suite of simulations we examine the emergence of pristine atomic cooling haloes that are both metal-free and star-free in the early Universe. The absence of metals prevents catastrophic cooling, suppresses fragmentation, and may
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c87065ac236d7080e8d7d786dbf11025
https://doi.org/10.1093/mnras/staa035
https://doi.org/10.1093/mnras/staa035
Autor:
Michael L Norman, Azton Wells
We introduce the Phoenix Simulations, a suite of highly resolved cosmological simulations featuring hydrodynamics, primordial gas chemistry, primordial and enriched star formation and feedback, UV radiative transfer, and saved outputs with Δt = 200
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f5ae3b8dc141ec3c3454504999b895e
http://arxiv.org/abs/2111.10651
http://arxiv.org/abs/2111.10651
Autor:
Michael L. Norman, John H. Wise, Chris J. Willott, Turlough P. Downes, John A. Regan, Brian W. O'Shea, Tyrone E. Woods
Identifying stars formed in pristine environments (Pop III) within the first billion years is vital to uncovering the earliest growth and chemical evolution of galaxies. Pop III galaxies, however, are typically expected to be too faint and too few in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35300dd8d7e12bb254762fcbea50c0be
http://arxiv.org/abs/2109.13279
http://arxiv.org/abs/2109.13279
Autor:
Edward D. Lazowska, Shawn Strande, Rob Fatland, Amanda Tan, Vince Kellen, Brian DeMeulle, Sarah Stone, Shava Smallen, Katherine Yelick, Naomi Alterman, Eric Van Dusen, Michael L. Norman, James Mitchell
Publikováno v:
PEARC
CloudBank is a cloud access entity founded to enable the computer science research and education communities to harness the profound computational potential of public clouds. By delivering a set of managed services designed to alleviate common points
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::479679d235bc91cc792dd5b918f42f06
https://doi.org/10.1145/3437359.3465586
https://doi.org/10.1145/3437359.3465586
Autor:
Ismael Perez, Mary Thomas, Trevor Cooper, Michael L. Norman, Manu Shantharam, Haisong Cai, Amit Majumdar, Robert S. Sinkovits, Ilkay Altintas, T. Hutton, Shawn Strande, Marty Kandes, Dmitry Mishin, Mahidhar Tatineni, Subhashini Sivagnanam, Christopher Irving, Nicole Wolter, Wayne Pfeiffer
Publikováno v:
PEARC
We describe the design motivation, architecture, deployment, and early operations of Expanse, a 5 Petaflop, heterogenous HPC system that entered production as an NSF-funded resource in December 2020 and will be operated on behalf of the national comm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d496e140427c503f13660b101202fb50
https://doi.org/10.1145/3437359.3465588
https://doi.org/10.1145/3437359.3465588