November 2009 ASTRONOTES Incorporating FRIENDS' NEWSLETTER The sky this month Apollo 12: A forgotten success? The women space forgot Is there water on the Moon? Christmas Star Show at Armagh Planetarium ARMAGHPLANETARIUM 2 Astronotes November 2009 Sailors on the Ocean of Storms By Colin Johnston, Science Communicator 1969's other manned Moon landing might have ended in disaster 36 seconds after liftoff. ... The Star of Bethelehem: was it a star? ... What are the stars? ... Happy star-gazing! ...
[
Текст
]
Ссылки http://www.armaghplanet.com/pdf/Astronotes/Astronotes2009/Astronotes_Nov2009.pdf -- 353.6 Кб -- 20.09.2011 Похожие документы
... News . ... Physicists discover new way to visualize warped space and time . ... This warping of space and time is so complicated that physicists haven't been able to understand the details of what goes on т?? until now. We've found ways to visualize warped space-time like never before," said Kip Thorne from Caltech in Pasadena, California. ... Though we've developed these tools for black-hole collisions, they can be applied wherever space-time is warped," said Geoffrey Lovelace from Cornell. ...
... We investigate the hydrodynamic stability of a relativistic flow of magnetized plasma in the simplest case where the energy density of the electromagnetic fields is much greater than the energy density of the matter (including the rest mass energy). ... Numerical calculations show that in the force-free approximation, the electron-positron jet with uniform poloidal magnetic field is stable for all velocities of longitudinal motion and rotation. ... The toroidal magnetic field is . ...
... Printed in U.S.A. COMPLEX FORMATION HISTORY OF THE LENTICULAR GALAXIES WITH STELLAR COUNTERROTATION: NGC 4138 AND NGC 45501 V. L. Afanasiev Special Astrophysical Observatory, Nizhnij Arkhyz, 369167 Russia; vafan@sao.ru and O. K. Sil`chenko 2 Sternberg ... To further explore this idea, we undertook a special study of stellar population properties in the centers of two early-type disk galaxies with counterrotating global stellar disks: NGC 4138 and NGC 4550. ... NGC 4138 3.1. ... NGC 4550 4.1....
Magnetorotational instability in protostellar discs Raquel Salmeron E R E· M E N E S· EAD M ·MUT A A thesis submitted for the degree of Doctor of Philosophy at the University of Sydney August 2004 T D O SI iii Abstract We investigate the linear growth and vertical structure of the magnetorotational instability (MRI) in weakly ionised, stratified accretion discs. The magnetic field is initially vertical and p erturbations have vertical wavevectors only. Solutions are obtained at representative radial lo