Z. Meliani | Observatoire de Paris (original) (raw)

Z. Meliani

I am a Associate Astronomer at LUTh, Observatoire de Paris.My current research interests concern fluid code development and numerical simulation

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Papers by Z. Meliani

Research paper thumbnail of Relativistic spine jets from Schwarzschild black holes Application to AGN radio-loud sources

Research paper thumbnail of Practical flux prescriptions for gamma-ray burst afterglows, from early to late times

Monthly Notices of the Royal Astronomical Society, 2012

Research paper thumbnail of Solar wind and stellar jets, from newtonian to relativistic ones

AIP Conference Proceedings, 2007

In parallel to the development of numerical simulations, analytical solutions for modelling the a... more In parallel to the development of numerical simulations, analytical solutions for modelling the acceleration and the collimation of winds and jets have been proposed. We present here how meridionally self-similar solutions can be used to model the solar wind using Ulysses data at solar minimum. Such solutions may also be adapted to explain the formation core or spine jets in classical and weak TTauri stars (class II and III young stellar jets) as well as relativistic jet cores from AGN. The criterion for collimation explains how the jet evolves towards a wind as the star approaches the main sequence. A similar scenario could explain the winds from Seyfert galaxies by opposition to the powerful jets from Fanaroff Riley sources.

Research paper thumbnail of Jet Stability: A Computational Survey

Lecture Notes in Physics, 2009

... Z. Meliani Centre for Plasma Astrophysics, KULeuven, Belgium, Zakaria.Meliani@wis.kuleuven. b... more ... Z. Meliani Centre for Plasma Astrophysics, KULeuven, Belgium, Zakaria.Meliani@wis.kuleuven. be ... 2.3 Wake-Current Sheets A relevant, closely related study is found in local box computations of the solar coronal streamer belt [31]. As sketched in Fig. ...

Research paper thumbnail of Gamma-ray burst afterglows from transrelativistic blast wave simulations

Monthly Notices of the Royal Astronomical Society, 2010

Research paper thumbnail of 3-D simulations of shells around massive stars

Arxiv preprint arXiv:1102.0104, 2011

Research paper thumbnail of Faranoff-Riley type I jet deceleration at density discontinuities

Astronomy and Astrophysics, 2008

Research paper thumbnail of Two-component magnetohydrodynamical outflows around young stellar objects

Astronomy and Astrophysics, 2006

Research paper thumbnail of Nonradial and nonpolytropic astrophysical outflows

Astronomy & Astrophysics, 2011

Research paper thumbnail of Modelling of T Tauri jets with low mass accretion rate

Proceedings of the International Astronomical Union, 2010

Research paper thumbnail of Relativistic spine jets from Schwarzschild black holes Application to AGN radio-loud sources

Research paper thumbnail of Practical flux prescriptions for gamma-ray burst afterglows, from early to late times

Monthly Notices of the Royal Astronomical Society, 2012

Research paper thumbnail of Solar wind and stellar jets, from newtonian to relativistic ones

AIP Conference Proceedings, 2007

In parallel to the development of numerical simulations, analytical solutions for modelling the a... more In parallel to the development of numerical simulations, analytical solutions for modelling the acceleration and the collimation of winds and jets have been proposed. We present here how meridionally self-similar solutions can be used to model the solar wind using Ulysses data at solar minimum. Such solutions may also be adapted to explain the formation core or spine jets in classical and weak TTauri stars (class II and III young stellar jets) as well as relativistic jet cores from AGN. The criterion for collimation explains how the jet evolves towards a wind as the star approaches the main sequence. A similar scenario could explain the winds from Seyfert galaxies by opposition to the powerful jets from Fanaroff Riley sources.

Research paper thumbnail of Jet Stability: A Computational Survey

Lecture Notes in Physics, 2009

... Z. Meliani Centre for Plasma Astrophysics, KULeuven, Belgium, Zakaria.Meliani@wis.kuleuven. b... more ... Z. Meliani Centre for Plasma Astrophysics, KULeuven, Belgium, Zakaria.Meliani@wis.kuleuven. be ... 2.3 Wake-Current Sheets A relevant, closely related study is found in local box computations of the solar coronal streamer belt [31]. As sketched in Fig. ...

Research paper thumbnail of Gamma-ray burst afterglows from transrelativistic blast wave simulations

Monthly Notices of the Royal Astronomical Society, 2010

Research paper thumbnail of 3-D simulations of shells around massive stars

Arxiv preprint arXiv:1102.0104, 2011

Research paper thumbnail of Faranoff-Riley type I jet deceleration at density discontinuities

Astronomy and Astrophysics, 2008

Research paper thumbnail of Two-component magnetohydrodynamical outflows around young stellar objects

Astronomy and Astrophysics, 2006

Research paper thumbnail of Nonradial and nonpolytropic astrophysical outflows

Astronomy & Astrophysics, 2011

Research paper thumbnail of Modelling of T Tauri jets with low mass accretion rate

Proceedings of the International Astronomical Union, 2010

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