Interaction of the Solar Wind with Magnetized Asteroids
نویسندگان
چکیده
RESUME We use a 2-D hybrid code (fluid electrons, particle ions) to simulate the interaction of the solar wind with a magnetized asteroid. The asteroid field is taken as a dipole with different strengths. For a small magnetic moment a whistler wake is generated. Stronger dipoles generate a magnetosonic perturbation. We compare simulation results with the signatures observed by Galileo near Gaspra and Ida. When the IMF is 90° to the solar wind flow, the wake is downstream from the asteroid, and is formed by whistler and magnetosonic waves. When the IMF is ≈45° to the flow, part of the wake is upstream. From the discrepancies found between observations and simulations we conclude that signatures near Gaspra and Ida were not generated by the solar wind interaction with magnetized asteroids.
منابع مشابه
Vidotto: ExoplanEts and thE stEllar wind
A&G • February 2013 • Vol. 54 1.25 The continuous flow of matter that escapes out of the solar gravitational well is known as the solar wind. As the material flows out of the Sun, it is accelerated to between 400 and 800 km s. Through this continuous flow of material, the Sun loses more than one million tonnes every second. But this is just a tiny fraction, corresponding to 2 × 10 of a solar ma...
متن کاملVidotto: ExoplanEts and thE stEllar wind
A&G • February 2013 • Vol. 54 1.25 The continuous flow of matter that escapes out of the solar gravitational well is known as the solar wind. As the material flows out of the Sun, it is accelerated to between 400 and 800 km s. Through this continuous flow of material, the Sun loses more than one million tonnes every second. But this is just a tiny fraction, corresponding to 2 × 10 of a solar ma...
متن کاملVidotto: ExoplanEts and thE stEllar wind
A&G • February 2013 • Vol. 54 1.25 The continuous flow of matter that escapes out of the solar gravitational well is known as the solar wind. As the material flows out of the Sun, it is accelerated to between 400 and 800 km s. Through this continuous flow of material, the Sun loses more than one million tonnes every second. But this is just a tiny fraction, corresponding to 2 × 10 of a solar ma...
متن کاملVidotto: ExoplanEts and thE stEllar wind
A&G • February 2013 • Vol. 54 1.25 The continuous flow of matter that escapes out of the solar gravitational well is known as the solar wind. As the material flows out of the Sun, it is accelerated to between 400 and 800 km s. Through this continuous flow of material, the Sun loses more than one million tonnes every second. But this is just a tiny fraction, corresponding to 2 × 10 of a solar ma...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2003