... Note: Click here a longer, much more comprehensive overview of the polar aurora . ... Magnetic Field . ... Aurora . ... 3b. Fritz Aurora . ... Electrons . ... Typical aurora (Dick Hutchinson ї) . In Alaska, Canada, Norway, Finland or northern Russia, on a clear night, a greenish glow is often seen in the sky, known as the "Northern Lights." ... Auroral light is produced at a height of about 100 km (60 miles) when fast electrons, arriving from space, slam into atoms and molecules of the atmosphere. ...

... Auroral Currents . ... Polar Caps . ... Aurora from Space . ... Magnetic Storms . ... Plasma phenomena occuring at one place in the magnetosphere also affect other locations This linkage is most pronounced between points that share the same field line, since field lines guide the motion of ions and electrons. ... Early researchers, who believed auroral electrons came from the Sun (see history ) could not understand why the aurora was absent from the vicinity of the magnetic pole itself. ...

... When the Sun produces a coronal mass ejection, is the blast of sufficient force to alter our star's path through the cosmos? Do these eruptions significantly perturb our solar system? ... The Sun sheds material in two ways: a constant solar wind due to an outward expansion of its extremely hot upper atmosphere (or corona) and less frequent explosive events called coronal mass ejections (CMEs). ... Get instant access to subscriber content on Astronomy.com! ...

... The very first thing you should do now is to locate the limits of your slitlets because this information is needed for all further commands. ... LOCATE/MOS . ... Then you should have a look at your flat field and try again with . ... OFFSET/MOS . ... The results are stored in the frame . If you have not written anything to this keyword it will derive the name of the normalized flat field by adding an `n' to the name of the input flat (e.g. nmosff1 ) and write the name to . ... FLAT/MOS . ...

... One of this year's largest mass ejections from the Sun's atmosphere was recorded last Sunday by TESIS telescopes aboard the CORONAS-PHOTON satellite ( video - wmv 4.3 MB ). ... Over the course of a week, two gigantic solar prominences were simultaneously ejected from the surface of the Sun. ... Earth will not feel the Sun's influence either. ... The TESIS observatory ї TESIS: www.tesis.lebedev.ru . ... One of this year's largest mass ejections from the Sun's atmosphere (movie WMV, 4.3 MB) . ...

... Earth's North Magnetic Pole . ... A magnetic compass does not point toward the true North Pole of the Earth. Rather, it more closely points toward the North Magnetic Pole of the Earth. The North Magnetic Pole is currently located in northern Canada. ... Globular star cluster Palomar 13 has roamed the halo of our Milky Way Galaxy for the last 12 billion years. ... Here is what a meteor shower looks like from orbit. ... Last year, the 1999 Leonids Meteor Shower came to a tremendous crescendo. ...

... RECOMMENDED VALUES OF PHYSICAL CONSTANTS AND CONVERSION FACTORS. ... This reference must be included when these constants are used in a context where their full accuracy is important. ... elementary charge (of proton) . ... gravitational constant . ... unified atomic mass constant . ... of electron . ... of proton . ... Planck constant . ... Rydberg constant, m 0 2 m e e 4 c 3 /8h 3 . ... fine structure constant, m 0 e 2 c/2h . ... Bohr radius, h 2 ( pm 0 c 2 m e e 2 ) . ... Bohr magneton, e h /2m e...

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... 1.Magnetic and magneto-elastic properties of heavy rare earth metals. ... High magnetic fields of 100 kOe and more were necessary to saturate the magnetization of havy rare earth metals. ... It was shown that the effective exchange field theory is sufficient for the description of the magnetic order in heavy rare earth metals and their compounds. ... The duality of the state of the magnetic carriers in the traditional 3d-magnetic materials. ... LHPP ISSP RAS © 2004 All rights reserved ...

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

. Echelle spectrometer . LYNX For consultations or other requests, please, contact with Dr. Maksim Yushkin: maks@sao.ru .

. INFRARED PROCESSING AND ANALYSIS CENTER

... PmWiki / . authors (basic) A key feature of WikiWikiWebs is the ease of creating links in the text of a document. ... To create a link to another page, simply enclose the name of the page inside double square brackets, as in [[wiki sandbox]] or [[installation]] . ... PmWiki creates a link by using the text inside the double brackets. ... PageName|+]] creates a link to PageName and uses that page's title as the link text, eg [[Links|+]] gives Links . ... name|link text]] within the same page, or . ...

. 18oct05 . The 1350 faa radar creates aliases in the alfa band when the digitizer has the radar in band. The plot shows the location of the aliases versus sky frequency (.ps) ( .pdf ) for the 100 Mhz setup. The aliases are the 2nd and 3rd harmonics of the radar at baseband. They could also be produced in the 1st IF after the 100 Mhz filter. For more info on how this is happenning see: faa radar aliasing in band . processing: x101/051017/1350_alias_alfa.ps . home_~phil

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. October 19, 1999 . Earth's North Magnetic Pole . ... Explanation: A magnetic compass does not point toward the true North Pole of the Earth. ... Evidence indicates that the North Magnetic Pole has wandered over much of the Earth's surface in the 4.5 billion years since the Earth formed. ... About APOD > . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The explosive event in IRIS 1330 slit-jaw images (in reversed colour). ... The arrows on the image at 18:42:08 UT mark the three bright cores discussed in the text, and the dotted-line square outlines the region from which the lightcurves in Fig. 11 are produced. ... Magnetic convergence or emergence followed by cancellation at a rate of 5 †Ч 10 14 Mx s тИТ1 is associated with the EE region. ...

. XMM-Newton Science Analysis System . ssclib (ssclib-3.33.4) [xmmsas_20080701_1801-8.0.0] . Meta Index / Home Page . Module name: source_cutouts . Author: Ian Stewart (University of Leicester, ims@star.le.ac.uk) . XMM-Newton SOC/SSC -- 2008-07-01

... The eleven years cycle of Sun's activity is approaching its maximum! From August 24th to 29th a team of astronomers, engineers and astro-photographers will travel to southern Greenland to observe the Northern Lights (Aurora Borealis), a phenomenon expected to be particularly spectacular during this period. ... Auroras . The wonderful celestial spectacle of the aurora occurs when very energetic particles from the Sun reach the Earth's atmosphere via the solar wind. ... About GLORIA . ...

Tape Drives . Magnetic tape drives can be used to either copy files from a tape to your directory, or to copy files from your disk to a tape. ... There are three types of tape drives available for your use. ... Table 10.1 lists the types of tape drives available at the Institute; Table 10.2 lists the locations of tape drives. ... If you need help finding a tape drive, see your system manager. Table 10.1: - Tape Drive Types . Table 10.2: - Tape and CD Drive Locations (subject to change) . ...

... In addition, IZMIRAN comprises the St.Petersburg branch and magnetic ionospheric observatory in Kaliningrad. The history of IZMIRAN is largely that of investigating magnetic storms and sub-storms on the Earth surface, in circum-terrestrial and interplanetary space, initially by means of a network of ground stations of the Soviet Union (1930s - 1940s) and the nonmagnetic skunner "Zarja", then through the extensive use of magnetic measurements on artificial Earth satellites and automatic stations. ...