Cube.exe Agent Trojan

1 ottobre 2010. ANCORA SULL'INNESCO DELLE AURORE

It is generally accepted that the phenomenon of the aurora is a luminous phenomenon that science has known for a time in their deeper mechanisms.

Yet periodically adding new pieces in the knowledge of this phenomenon of the atmosphere. These days

news agencies have reported the news last discovery of some researchers contained in a report published in the journal Science ( ansa.it, September 30, 2010 ).

using data from NASA's Themis mission of the satellite have identified that the rapid flash of light bands of the aurora are caused da particelle energetiche provenienti dal vento solare.



Le aurore sono innescate da un coro di onde magnetiche. Questo coro di onde 'canta' a bassissime frequenze:

"Pulsating aurora, a spectacular emission that appears as blinking of the upper atmosphere in the polar regions, is known to be excited by modulated, downward-streaming electrons. Despite its distinctive feature, identifying the driver of the electron precipitation has been a long-standing problem. Using coordinated satellite and ground-based all-sky imager observations from the THEMIS mission, we provide direct evidence that a naturally occurring electromagnetic wave, lower-band chorus, can drive pulsating aurora. Because the waves at a given equatorial location in space correlate with a single pulsating auroral patch in the upper atmosphere, our findings can also be used to constrain magnetic field models with much higher accuracy than has previously been possible"

Y. Nishimura, J. Bortnik, W. Li, RM Thorne, LR Lyons, V. Angelopoulos, SB Mende , JW Bonnell, O. Le Contel, C. Cully, R. Ergun , U. Auster, "Identifying the Drivers of Pulsating Aurora , vol. 330, No 6000, Science magazine , October 1, 2010, pp. 81 to 84.

[Top: image of the aurora taken from Jader Monari, during "Embla 2010" in Hessdalen, Norvegia, settembre 2010 ; filmato: http://www.youtube.com/watch?v=BDZj1CmsJ64&NR=1 ]