Astronomy and Astrophysics

Seismology of solar spicules based on Hinode/SOT observations

The Effect of Solar Particles in the Choice of Alloy Shielding in a Satellite

The damages and logical failures in dierent parts of a satellite may occur during a solar event, when a bulk of solar energetic particles approaching the Earth. During solar events, these particles may cause extensive damages which are even permanent (hard errors). A way of damage reduction is designing a proper coating as the fuselage. As protons are the major component of solar particles and ...

Understanding Activity in Low–Mass Stars

Lucianne M. Walkowicz, Department of Astronomy, University of California Berkeley Andrew A. West, MIT Kavli Institute for Astrophysics and Space Research Gibor Basri, Department of Astronomy, University of California Berkeley Matthew K. Browning, Canadian Institute for Theoretical Astrophysics Adam F. Kowalski, Department of Astronomy, University of Washington Eric Hilton, Department of Astrono...

Evolution of Magnetic Fields in High Mass Star Formation: Linking field geometry and collapse for the W51 e2/e8 cores

Evolution of Magnetic Fields in High Mass Star Formation: Linking field geometry and collapse for the W51 e2/e8 cores Ya-Wen Tang Department of Physics, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan & Academia Sinica Institute of Astronomy and Astrophysics, P. B. Box 23-141, Taipei 10617,Taiwan Paul T. P. Ho Academia Sinica Institute of Astronomy and Astrophysi...

Evolution of Information and Complexity in an Ever-Expanding Universe

Using the usual definitions of information and entropy in quantum gravity and statistical mechanics and the existing views about the relation between information and complexity, we examine the evolution of complexity in an ever expanding universe.

The Macho Project Large Magellanic Cloud Variable Star Inventory. Xiii. Fourier Parameters for the First Overtone Rr Lyrae Variables and the Lmc Distance

Shapes of RR Lyrae light curves can be described in terms of Fourier coefficients which past research has linked with physical characteristics such as luminosity, mass Department of Physics and Astronomy, University of Pennsylvania, PA 19104 Lawrence Livermore National Laboratory, Livermore, CA 94550 Columbia Astrophysics Laboratory, Columbia University, 550 West 120th Street, Mailcode 5247, Ne...