ALLAN SACHA BRUN Head of the Laboratory on Dynamics
... stellar magnetic cycles, butterfly diagrams and the influence of multi cellular meridional circulation or magnetic pumping on the activity cycles. - Study nonlinear interactions between magnetized stars & wind, disk or planet using 2--D & 3-D PLUTO code - Improved the physical contents (microscopic ...
... stellar magnetic cycles, butterfly diagrams and the influence of multi cellular meridional circulation or magnetic pumping on the activity cycles. - Study nonlinear interactions between magnetized stars & wind, disk or planet using 2--D & 3-D PLUTO code - Improved the physical contents (microscopic ...
"The Sun Is A Plasma Diffuser That Sorts Atoms By Mass"
... Unidentified Nuclear effects in isotopes trapped in meteorites at the birth of the solar system. Fowler [78], Cameron [79] and Wasserburg [80] soon agreed that most isotope anomalies might be explained by injections of “alien” material amounting to a tiny fraction (!10-5-10-4) of that in the solar s ...
... Unidentified Nuclear effects in isotopes trapped in meteorites at the birth of the solar system. Fowler [78], Cameron [79] and Wasserburg [80] soon agreed that most isotope anomalies might be explained by injections of “alien” material amounting to a tiny fraction (!10-5-10-4) of that in the solar s ...
cosmic ray transport and production in the galaxy: a
... size of the time step and the number of trajectories play a major role in describing the contribution of possible sources in the Galaxy. In order to have satisfactory statistics, the size of the time step must be small and the process is averaged over a few thousand trajectories. In order to describ ...
... size of the time step and the number of trajectories play a major role in describing the contribution of possible sources in the Galaxy. In order to have satisfactory statistics, the size of the time step must be small and the process is averaged over a few thousand trajectories. In order to describ ...
Here - ECASD
... across the center of the sky called the Milky Way was not a cloud but a collection of countless stars. Edwin Hubble, worked on very enormous telescopes and so the telescope pictured here was named after him. This Hubble telescope, is the first telescope to be placed in space. Because it was launched ...
... across the center of the sky called the Milky Way was not a cloud but a collection of countless stars. Edwin Hubble, worked on very enormous telescopes and so the telescope pictured here was named after him. This Hubble telescope, is the first telescope to be placed in space. Because it was launched ...
imaging_wkshp_all - Harvard-Smithsonian Center for Astrophysics
... • Coordinated Ulysses and SOHO observations of another CME in Nov. 2002 found similar high Fe charge states both in the corona and at 4 AU – thus following for the first time the hot parcels of CME plasma from their origin to ...
... • Coordinated Ulysses and SOHO observations of another CME in Nov. 2002 found similar high Fe charge states both in the corona and at 4 AU – thus following for the first time the hot parcels of CME plasma from their origin to ...
Slide 1
... answers: this gives us confidence that our estimates of nebular composition are correct ...
... answers: this gives us confidence that our estimates of nebular composition are correct ...
Field Trip Guide - Museum of Science, Boston
... in the solar system. How long would it take to get there? ...
... in the solar system. How long would it take to get there? ...
Powerpoint
... Need iron core rotation at death to correspond to a pulsar of < 5 ms period if rotation and B-fields are to matter. This is much faster than observed in common pulsars. A concern: If calculate the presupernova evolution with the same efficient magnetic field generating algorithms as used in some cor ...
... Need iron core rotation at death to correspond to a pulsar of < 5 ms period if rotation and B-fields are to matter. This is much faster than observed in common pulsars. A concern: If calculate the presupernova evolution with the same efficient magnetic field generating algorithms as used in some cor ...
document
... How does the star/planet formation model explain the composition differences between terrestrial and Jovian planets, between rocky and icy moons, across the ...
... How does the star/planet formation model explain the composition differences between terrestrial and Jovian planets, between rocky and icy moons, across the ...
V1003.HW5.2014 - Earth and Environmental Sciences
... on the left hand panel of the model. The "Equilibrium near-surface air temperature" that is calculated for a given CO2 value is calculated and displayed on the upper right hand panel (after you press the "Do it!" button; you'll get a lot of plots and information here but just pay attention to the "E ...
... on the left hand panel of the model. The "Equilibrium near-surface air temperature" that is calculated for a given CO2 value is calculated and displayed on the upper right hand panel (after you press the "Do it!" button; you'll get a lot of plots and information here but just pay attention to the "E ...
The Photosphere
... • MagneCc fields are observed on the face of the Sun; they probably arise from the convecCve moCons of charged parCcles and become amplified close to the surface. • The overall field of the Sun i ...
... • MagneCc fields are observed on the face of the Sun; they probably arise from the convecCve moCons of charged parCcles and become amplified close to the surface. • The overall field of the Sun i ...
Huge Quantum Gravity Effects in the Solar System
... seem to suggest that quantum effects are very small for the motion of planets in the Solar System. Nevertheless, there are other effects that can make quantum effects become enormous. In particular, classical chaos in the Solar System [1, 2, 3, 4, 5, 6, 7, 8, 9] can exponentially amplify quantum un ...
... seem to suggest that quantum effects are very small for the motion of planets in the Solar System. Nevertheless, there are other effects that can make quantum effects become enormous. In particular, classical chaos in the Solar System [1, 2, 3, 4, 5, 6, 7, 8, 9] can exponentially amplify quantum un ...
distmeasures
... As you may have guessed in your answer to the previous question, the basic units of distance you use everyday can be unwieldy when describing the distances to celestial objects. You will not become familiar with some common astronomical distances measures. In the solar system, it is convenient to us ...
... As you may have guessed in your answer to the previous question, the basic units of distance you use everyday can be unwieldy when describing the distances to celestial objects. You will not become familiar with some common astronomical distances measures. In the solar system, it is convenient to us ...
DISTANCE MEASURES EXERCISE The goal of this exercise is to
... As you may have guessed in your answer to the previous question, the basic units of distance you use everyday can be unwieldy when describing the distances to celestial objects. You will not become familiar with some common astronomical distances measures. In the solar system, it is convenient to us ...
... As you may have guessed in your answer to the previous question, the basic units of distance you use everyday can be unwieldy when describing the distances to celestial objects. You will not become familiar with some common astronomical distances measures. In the solar system, it is convenient to us ...
Solar Magnetism and Solar Cycle
... • Astronomers now believe that the Sun’s magnetic field is generated and amplified by the constant stretching, twisting, and folding of the field lines that results from the combined effects of differential rotation and convection. • This theory is called solar dynamo, which predicts that the Sun ...
... • Astronomers now believe that the Sun’s magnetic field is generated and amplified by the constant stretching, twisting, and folding of the field lines that results from the combined effects of differential rotation and convection. • This theory is called solar dynamo, which predicts that the Sun ...
Cosmic context: stars and formation of heavy elements
... Mass of stars ranges from ~0.1 Solar masses up to ~100 Solar masses. Low mass stars are much more common than high mass stars. Low mass stars: M < 2 Solar masses Greatest interest for astrobiology as long lived: “main sequence” lifetime (while fusing H -> He in the core) is billions of years Luminos ...
... Mass of stars ranges from ~0.1 Solar masses up to ~100 Solar masses. Low mass stars are much more common than high mass stars. Low mass stars: M < 2 Solar masses Greatest interest for astrobiology as long lived: “main sequence” lifetime (while fusing H -> He in the core) is billions of years Luminos ...
Class 1 and 2 lecture slides (Solar System Formation)
... answers: this gives us confidence that our estimates of nebular composition are correct ...
... answers: this gives us confidence that our estimates of nebular composition are correct ...
Advanced Composition Explorer
Advanced Composition Explorer (ACE) is a NASA Explorers program Solar and space exploration mission to study matter comprising energetic particles from the solar wind, the interplanetary medium, and other sources. Real-time data from ACE is used by the NOAA Space Weather Prediction Center to improve forecasts and warnings of solar storms. The ACE robotic spacecraft was launched August 25, 1997 and entered a Lissajous orbit close to the L1 Lagrangian point (which lies between the Sun and the Earth at a distance of some 1.5 million km from the latter) on December 12, 1997. The spacecraft is currently operating at that orbit. Because ACE is in a non-Keplerian orbit, and has regular station-keeping maneuvers, the orbital parameters at right are only approximate. The spacecraft is still in generally good condition in 2015, and is projected to have enough fuel to maintain its orbit until 2024. NASA Goddard Space Flight Center managed the development and integration of the ACE spacecraft.