... This limited extent suggests that the currents which disturb the field flow somewhere nearby, probably near the auroral arcs. ... Any electric current, however, must flow in a closed circuit, and since it seemed to be caused (like that of the aurora) by processes taking place in distant space, Birkeland proposed that it came down from space at one end of the arc and returned to space at the other end. ... The electric energy needed to drive the current is taken from the motion, which is slowed down....

Подписка на рассылку обзоров astro-ph на Subscribe.Ru . ... Предыдущий выпуск (N335) . ... Обсудить на форуме Scientific.RU . ... Подписка на рассылку обзоров на Subscribe.Ru . Обзоры препринтов astro-ph . ... Собственно обзоры препринтов. ... Ранее обзоры также были на Астронете и на Scientific.Ru . ... АНКи доступны на Астронете , а с 2006 по 2008 г. также на сайте Элементы.Ру . ... Ранее они также размещались на сайте Астронет и в архиве моих обозрений (кодировка KOI8) на сайте Scientific.Ru . ...

... Auroral Currents . 25H. Birkeland Currents . ... Aurora Origin . ... Any electric current, however, must flow in a closed circuit, and since it seemed to be caused (like that of the aurora) by processes taking place in distant space, Birkeland proposed that it came down from space at one end of the arc and returned to space at the other end. ... His idea was that as solar plasma flowed through magnetic fields, dynamo effects produced the very same currents which also created those magnetic fields. ...

For historical reasons, it is useful to offer comparisons between the current WFPC2, and its predecessor WF/PC-1, which was returned to Earth in December 1993. Field format: WF/PC-1 contained 8 cameras and CCDs, each CCD having 800 x 800 pixels. ... Many differences derive from the fact that the WF/PC-1 CCDs were thinned, backside illuminated devices whereas the WFPC2 CCDs are thick, frontside illuminated devices. ... WFPC2 devices have much less CTE error, and hence no preflash is used. ...

This page shows which observing modes are available with which correlator and gives a brief description of the observing modes.. available; . ... WAPP . ... ALFA . ... Calibration mode that scans 4 times across the calibrator, forming a spider shape. ... Calibration mode that scans twice across the calibrator, forming a cross shape. ... This is the standard spectral-line single-pixel observing mode. ... A Calibration mode used by the Galactic ALFA surveys to calibration the G-ALFA HI Spectrometer. ...

Next: Modes of Operation Up: CCD Scientific Performance Previous: Field of View . Thermal excitation of charge carriers from the valence to the conduction band creates a dark current signal which may vary with position in the array, and also has temporal shot noise variation. ... In a device devoid of localized defects which give rise to individual dark current spikes , most dark current arises from electrons generated at interface states at the surface. ...

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Solar Flare Origin - critical analysis" Lev Pusti'lnik We analyze current approach to solar flare origin in 3 aspects: a. Pre-flare equilibrium state of current-magnetic structure above active region and its evolution to flare state, b. Possible reasons of stability loss with transition of system in flare state c. Flare energy release in turbulent current sheet and particle acceleration in this system. ...

... Astrophysics Group . ... COAST . COAST Current Status . ... COAST File Archive . ... Fringes and Power Spectra from COAST . ... The first stellar fringes were obtained in June 1991. ... We obtained sufficient data to reconstruct the first infrared image from an aperture synthesis array. ... The North telescope of the COAST array was moved to a new foundation, further to the North, making the longest baseline 67 metres. ... A fifth telescope was sited on the Southwest arm of the COAST array. ...

... According to the current estimates, a few percent of Main Sequence B5-F5 stars reveal strong surface magnetic fields reaching the values of tens of kilogauss, which is an order of magnitude greater than the maximal magnetic field in sunspots. ... An important direction in the study of magnetic stars is the study of binary and multiple systems with magnetic components using the techniques of spectroscopy and high angular resolution interferometry. ...

... Sun images . Magnetic storms online . ... Geomagnetic activity forecast . ... March : 2012 . ... No geomagnetic storms were observed for the past 3 hours Geomagnetic storms were observed for the past 24 hours . Magnetic storm of level G1 (minor) from 00:00 to 03:00 UT . Magnetic storm of level G2 (moderate) from 03:00 to 06:00 UT . Magnetic storm of level G3 (strong) from 06:00 to 09:00 UT . ... Last updated: March 10, 2012 00:00 UT . ... 7(499)132-65-96, Fax: +7(499)132-65-97 . ...

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... General information . ... Eurasian Astronomical Society . Main Optional Sections (Workshops) . ... Main Deadlines . ... The conference "Astronomy - 2005: Current State and Prospects" is to be held in Moscow, Russia, on June 1-6, 2005, in the frame of the Scientific Program of the 8th General Meeting of the Eurasian Astronomical Society. The main goal of the Symposium is to analyze the current state and possible prospect of astronomical science and work out a strategy of its development. ...

January 7, 2000 Dr. Eric Torrence, University of Chicago . ... 3:00pm, 240D Willamette Hall . Dr. Torrence will also present the Physics Colloquium on January 6. return to top . ... Dr. Morii will also present the Physics Colloquium on January 24. return to top . ... return to top . ... The ratio of the inclusive jet cross sections at center of mass energies 0.63 TeV and 1.8 TeV is also presented versus scaled jet transverse energy x_T and compared to QCD predictions. 3:00pm, 472 Willamette Hall . ...

... Размер: 2;1 . Цвет: Голубой . ... Рубашки / Блузки . ... Артикул: D122_15KR Цвет: белый Состав: 50% вискоза, 50% полиэстер Описание: элегантная блуза без рукава. ... Цвет: черный . ... Черный глянец металла облагораживает и сдерживает невероятный шик образа, достойного лучших интерьеров.<div><br></div><div>Цоколь: E14.</div><div>Мощность: 8х40.</div> . ... Ящик для 20 ключей Office-Force с кодовым замком, цвет: черный - Office-Force - Office-Force . ...

... Share your current Research with us . ... От: "Journal of Geology Geosciences" . ... Тема: Share your current Research with us . ... Journal of Geology Geosciences publishes original Research/Review/Mini-review/Commentary/Opinion articles, Short communication, Case Reports etc, which covers the topics related to Earth Sciences, Climatic Change, Disaster Management, Disaster Preparedness Mineralogy, Geodesy, GIS, Remote Sensing, Anthropology, Geography of the Earth, Primatology, Planetary Sciences...

. When you log on to the system you are always placed in your home directory . At first this is your current directory. If you then change to another directory this becomes your current directory. The command pwd displays the full pathname to your current directory.