Výsledky vyhledávání - "Bertrand Putigny"

Autor: F. Espinosa Lara, Daniel R. Reese, Michel Rieutord, Bertrand Putigny, G. M. Mirouh

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 645, pp.A46. ⟨10.1051/0004-6361/201935538⟩

Recent numerical and theoretical considerations have shown that low-degree acoustic modes in rapidly rotating stars follow an asymptotic formula and recent observations of pulsations in rapidly rotating delta Scuti stars seem to match these expectati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e7d5f1644f82f7e3d172b8626f275e0
https://hal.archives-ouvertes.fr/hal-03101010

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Critical angular velocity and anisotropic mass loss of rotating stars with radiation-driven winds

Autor: Michel Rieutord, Bertrand Putigny, D. Gagnier, Corinne Charbonnel, F. Espinosa Lara

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2019, 625, pp.A88. ⟨10.1051/0004-6361/201834599⟩
Astronomy and Astrophysics-A&A, 2019, 625, pp.A88. ⟨10.1051/0004-6361/201834599⟩

The understanding of the evolution of early-type stars is tightly related to that of the effects of rapid rotation. For massive stars, rapid rotation combines with their strong radiation-driven wind. The aim of this paper is to investigate two questi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::143569e606140ab033f993be1fd9830f
https://hal.archives-ouvertes.fr/hal-02918690/document

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Evolution of rotation in rapidly rotating early-type stars during the main sequence with 2D models

Autor: F. Espinosa Lara, D. Gagnier, Corinne Charbonnel, Michel Rieutord, Bertrand Putigny

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2019, 625, pp.A89. ⟨10.1051/0004-6361/201832581⟩
Astronomy and Astrophysics-A&A, 2019, 625, pp.A89. ⟨10.1051/0004-6361/201832581⟩

The understanding of the rotational evolution of early-type stars is deeply related to that of anisotropic mass and angular momentum loss. In this paper, we aim to clarify the rotational evolution of rapidly rotating early-type stars along the main s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f09fbe9b1634a252652365238749907
https://hal.archives-ouvertes.fr/hal-02918686

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The evolved fast rotator Sargas

Autor: A. Domiciano de Souza, K. Bouchaud, Michel Rieutord, F. Espinosa Lara, Bertrand Putigny

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 619, pp.A167. ⟨10.1051/0004-6361/201833450⟩
Astronomy and Astrophysics-A&A, 2018, 619, pp.A167. ⟨10.1051/0004-6361/201833450⟩

Gravity darkening (GD) and flattening are important consequences of stellar rotation. The precise characterization of these effects across the HRD is crucial to a deeper understanding of stellar structure and evolution. We seek to characterize such i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e0883af7ee51e6d9a85360f8b7adfe5

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An algorithm for computing the 2D structure of fast rotating stars

Autor: Bertrand Putigny, M. Rieutord, Francisco Espinosa Lara

Stars may be understood as self-gravitating masses of a compressible fluid whose radiative cooling is compensated by nuclear reactions or gravitational contraction. The understanding of their time evolution requires the use of detailed models that ac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2dada168ec701465e8b5e99119ed9386
http://arxiv.org/abs/1605.02359

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Gravity darkening in late-type stars

Autor: Thomas Gastine, Raphaël Raynaud, Bertrand Putigny, Ludovic Petitdemange, Michel Rieutord

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 609 (A124), ⟨10.1051/0004-6361/201731729⟩
Astronomy and Astrophysics-A&A, 2018, 609 (A124), ⟨10.1051/0004-6361/201731729⟩

Recent interferometric data have been used to constrain the brightness distribution at the surface of nearby stars, in particular the so-called gravity darkening that makes fast rotating stars brighter at their poles than at their equator. However, g

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e8c56d477f69dd5890dcf0e18a061ce
https://doi.org/10.1051/0004-6361/201731729

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A benchmark-based performance model for memory-bound HPC applications

Autor: Brice Goglin, Denis Barthou, Bertrand Putigny

Publikováno v: HPCS
International Conference on High Performance Computing & Simulation (HPCS 2014)
International Conference on High Performance Computing & Simulation (HPCS 2014), Jul 2014, Bologna, Italy. ⟨10.1109/HPCSim.2014.6903790⟩

International audience; The increasing computation capability of servers comes with a dramatic increase of their complexity through many cores, multiple levels of caches and NUMA architectures. Exploiting the computing power is increasingly harder an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::348274643a20ef253f9b1e3037181c4d
https://doi.org/10.1109/hpcsim.2014.6903790

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Analysis of MPI Shared-Memory Communication Performance from a Cache Coherence Perspective

Autor: Brice Goglin, Bertrand Putigny, Benoit Ruelle

Publikováno v: IPDPS Workshops
PDSEC-The 15th IEEE International Workshop on Parallel and Distributed Scientific and Engineering Computing, held in conjunction with IPDPS
PDSEC-The 15th IEEE International Workshop on Parallel and Distributed Scientific and Engineering Computing, held in conjunction with IPDPS, May 2014, Phoenix, AZ, United States. ⟨10.1109/IPDPSW.2014.139⟩

International audience; Shared memory MPI communication is an important part of the overall performance of parallel applications. However understanding the behavior of these data transfers is difficult because of the combined complexity of modern mem

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::621fca85c0ee5fc316c520215b74ff80
https://doi.org/10.1109/ipdpsw.2014.139

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