Výsledky vyhledávání - "Christophe Sauty"

Conformal representation of Kerr space–time poloidal sub-manifolds

Autor: Loïc Chantry, Christophe Sauty, V. Cayatte

Publikováno v: Classical and Quantum Gravity
Classical and Quantum Gravity, IOP Publishing, 2020, 37 (10), pp.105003. ⟨10.1088/1361-6382/ab8399⟩
Class.Quant.Grav.
Class.Quant.Grav., 2020, 37 (10), pp.105003. ⟨10.1088/1361-6382/ab8399⟩

International audience; We use two conformal transformations to represent field lines in the poloidal sub-manifold of Kerr space–time. The first one is based on an embedding in of a manifold which is conform to the poloidal submanifold. The second

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9db5c454068c85a62519c79b98781a7
https://hal.archives-ouvertes.fr/hal-03035891/document

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Accretion in low-mass members of the Orion Nebula Cluster with young transition disks

Autor: C. Melo, R. M. G. de Albuquerque, Silvia H. P. Alencar, J. F. Gameiro, Christophe Sauty, J. J. G. Lima

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 636, pp.A86. ⟨10.1051/0004-6361/201936694⟩

Although the Orion Nebula Cluster is one of the most studied clusters in the solar neighborhood, the evolution of the very low-mass members ($M_* < 0.25 \, M_\odot$) has not been fully addressed due to their faintness. Our goal is to verify if some y

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62d78cc14142c4f627835669a53b76f3
https://hal.archives-ouvertes.fr/hal-02613203

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An Energetic Criterion for Astrophysical Winds and Jets

Autor: Kanaris Tsinganos, M. Damoulakis, Christophe Sauty, V. Cayatte

Publikováno v: Astrophysics and Space Science Proceedings ISBN: 9783030141271

The dichotomy of astrophysical flows to appear either as collimated jets, or, uncollimated winds is discussed in the frame of ideal magnetohydrodynamics (MHD). In particular, we focus on the energetics of these outflows as an explanation of their app

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bc98f3826ee6578290b5e823a17a4cc0
https://doi.org/10.1007/978-3-030-14128-8_2

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Simulating Accretion and Outflow Regions in YSOs

Autor: R. M. G. de Albuquerque, V. Cayatte, Christophe Sauty, J. F. Gameiro, S. Ulmer-Moll, J. J. G. Lima

Publikováno v: Astrophysics and Space Science Proceedings ISBN: 9783030141271

Observations and simulations have joined efforts to answer many questions raised by the unexpected behavior detected in Young Stellar Objects (YSOs). Classical T Tauri stars (CTTS) are a particular case of YSOs. These objects are interacting with the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e46f9f14b5df7fd070696058f7b3f97c
https://doi.org/10.1007/978-3-030-14128-8_9

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A Short Tribute to Kanaris Tsinganos, Conclusions to This Book

Autor: J. J. G. Lima, Nektarios Vlahakis, Christophe Sauty

Publikováno v: Astrophysics and Space Science Proceedings ISBN: 9783030141271

This contribution is a special one dedicated to Kanaris Tsinganos, who promoted MHD Astrophysics and as such was a key leader in the JETSET network. This network finished in 2008 with a great international meeting in Rhodes organised by Kanaris. When

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ac679ae26b5bf622bd3e2de660b3f88c
https://doi.org/10.1007/978-3-030-14128-8_21

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Elektronická kniha

JET Simulations, Experiments, and Theory : Ten Years After JETSET. What Is Next?

Autor: Christophe Sauty

In 2008, the European FP6 JETSET project ended. JETSET, for Jet, Simulations, Experiments, and Theory, was a joint research network of European expert teams on protostellar jets. The present proceedings are a collection of contributions presenting ne

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Nonradial and nonpolytropic astrophysical outflows. X. Relativistic MHD rotating spine jets in Kerr metric

Autor: L. Chantry, V. Cayatte, Christophe Sauty, Kanaris Tsinganos, Nektarios Vlahakis

Publikováno v: Astron.Astrophys.
Astron.Astrophys., 2018, 612, pp.A63. ⟨10.1051/0004-6361/201731793⟩
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 612, pp.A63. ⟨10.1051/0004-6361/201731793⟩
Astron.Astrophys., 2018, 612, pp.A63. 〈10.1051/0004-6361/201731793〉

High resolution radio imaging of AGN have revealed that some sources present motion of superluminal knots and transverse stratification of their jet. Recent observational projects have provided new observational constraints on the central region of r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::706ce8559f82f1576d3d59e146b42f08
http://arxiv.org/abs/1712.05589

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Shocks in relativistic transverse stratified jets, a new paradigm for radio-loud AGN

Autor: Christophe Sauty, Zakaria Meliani, V. Cayatte, H. Sol, Catherine Boisson, O. Hervet, Andreas Zech

Publikováno v: Astron.Astrophys.
Astron.Astrophys., 2017, 606, pp.A103. ⟨10.1051/0004-6361/201730745⟩
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2017, 606, pp.A103. ⟨10.1051/0004-6361/201730745⟩
NASA Astrophysics Data System
Astron.Astrophys., 2017, 606, pp.A103. 〈10.1051/0004-6361/201730745〉

The transverse stratification of active galactic nuclei (AGN) jets is suggested by observations and theoretical arguments, as a consequence of intrinsic properties of the central engine (accretion disc + black hole) and external medium. On the other

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c5bb78e36b469f53a5bbe3ada349cd2
http://arxiv.org/abs/1705.10556

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Numerical study of the adiabatic index effect for the Vishniac instability in supernova remnants

Autor: C. Cavet, Christophe Sauty, Claire Michaut, Serge Bouquet, Fabrice Roy, H. C. Nguyen

Publikováno v: Astrophysics and Space Science
Astrophysics and Space Science, 2011, 336, pp.183-187. ⟨10.1007/s10509-011-0688-8⟩

International audience; The Vishniac instability is supposed to explain the fragmentation of the thin shell of shocked matter in the radiative phase of supernova remnants. However its implication and its consequence on the morphological evolution of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42071a958affb47185685462840c030d
https://doi.org/10.1007/s10509-011-0688-8

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ON MAGNETIC SELF-COLLIMATION OF RELATIVISTIC JETS

Autor: V. Cayatte, Noemie Globus, Christophe Sauty

Publikováno v: International Journal of Modern Physics D. 19:689-694

We present a semi-analytical model using the equations of general relativistic magnetohydrodynamics (GRMHD) for jets emitted by a rotating black hole. We assume steady axisymmetric outflows of a relativistic ideal fluid in Kerr metrics. We express th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::59472a29c34d3f0a0b686a7c9c6aa145
https://doi.org/10.1142/s0218271810017068

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