The "ring of fire" seen by satellite cameras around the polar caps (picture below) is probably created by electrons leaking from the tail's plasma sheet, whose magnetic field lines form a somewhat imperfect trap. ... One possible explanation involves the close association between auroral arcs and electric currents which flow along field lines between the ionosphere and distant space ( Birkeland currents ). ... That produces an extra resistance to the flow of current. ...

... Every morning, the LRPG determines if the previous night's batch-LRP was successful and examines any differences between the last released LRP and the current LRP. ... Was the nightly LRP run successful? ... check that an "AUTO" LRP was created for the most recently run nightly batch-LRP process. ... Daily working LRP names are alphabetically sequenced (A, B, C, ... under normal circumstances, often only A will get created and later released). ... For each run, two files are generally created. ...

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 . ...

. To create a file with the cat command: cat > memo remember to make appointment at opticians get cost of scheduled flight to Athens Ctrl-d . This creates a file called memo in the current directory containing two lines of text. To create a file with the echo command: echo use an editor for large files > tips . This creates a file called tips in the current directory containing a single line of text.

... 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 > . ...

... Aurora from Space . ... Magnetic Storms . ... The "ring of fire" seen by satellite cameras around the polar caps (picture below) is probably created by electrons leaking from the tail's plasma sheet, whose magnetic field lines form a somewhat imperfect trap. ... One possible explanation involves the close association between auroral arcs and electric currents which flow along field lines between the ionosphere and distant space ( Birkeland currents ). ... Why no aurora at the magnetic poles? ...

... Mysterious Acid Haze on Venus . ... Credit: ESA / MPS , Katlenburg-Lindau , Germany Explanation: Why did an acidic haze spread across Venus? The unusual clouds were discovered last July by ESA 's robotic Venus Express spacecraft currently orbiting Venus . ... Over the course of just a few days last July, the smooth acidic clouds spread from the South Pole of Venus across half the planet. ... NASA Web Site Statements, Warnings, and Disclaimers . ... Crescent Moon and Venus . ... Venus in the Moon . ...

The left mouse button controls the creation and manipulation of region markers or cursors. ... Text When a marker type of selected, new markers of that type can be created using the left mouse button. The current default marker type is displayed below the menu. ... Set Default Marker Name (and Color) . ... Reset the fix parameter state of currently existing markers to match the global state set by the -fix command switch or by the Edit Global Fix Params For New Markers option in the Markers menu. ...

Function: GETLOGNAM Purpose: Returns the log name of the current user. Category: UTILITY File: getlognam.c Author: K.G. Begeman Use: CALL GETLOGNAM( LOGNAM ) Output CHARACTER*(*) LOGNAM Name of user currently logged in. Warning: System dependent! Currently implemented for UNIX systems. Updates: Apr 27, 1991: KGB Document created.

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. ...

... R. E. Jackson . ... H.-M. Adorf . ... D. C. Wells . ... AstroWeb is a World Wide Web (WWW) interface to a collection of Internet accessible resources aimed at the astronomical community. ... The goal of AstroWeb is to be the most complete, up to date, and useful listing of Internet accessible astronomical resources available anywhere. ... Jackson, Wells, and Adorf noticed that they and others had created largely overlapping lists of Astronomical resources. ...

... Does the time it takes different methods to create all the elements coincide with the universeт??s accepted age? ... Illinois Urbana-Champaign) Different kinds of stars create elements at different rates, all of which are consistent with the age of the universe. Get instant access to subscriber content on Astronomy.com! ... Registration is FREE and takes only a few seconds to complete. If you are already registered on Astronomy.com, please log in below. ...

From: TerryMosel aol.com Date: Sun, 3 Jul 2005 11:43:56 EDT Subject: Deep Impact, Sunspots, Weird Planet, Shuttle Launch Hi all, 1. DEEP IMPACT: As you probably know, the Deep Impact impactor probe is due to smash into comet 9P / Tempel 1 at about 05.50 UT on 4 July. ... WEIRD NEW PLANET: On Thursday a group of astronomers announced finding perhaps the most bizarre extrasolar planet yet: an object with a core of heavy elements that may amount to 65 - 70 times the mass of Earth. ...

... This page deals with the operational issue of how to fill the calibration memory properly, and with the interplay of createAB and that memory. The calibration memory is the list of all calibration product files currently available for association. ... The dynamic calibrations are created by the pipeline from raw files and are stored in $DFO_CAL_DIR/<date>. ... DFO_CAL_DIR/VCAL is the pool of virtual calibrations. ... The calibration memory is managed by DFOS in the following way: . ...

. Project Identification: . Source Name: . Observation Date: . (yyyy/mm/dd) . Start Date: . End Date: . Source Position: . RA (J2000): . h m s . Dec (J2000): . o ' '' . Search box in arcminutes: . +/- (Default 10 arcminutes meaningful . only when both ra dec are specified) .

Bright Supernova - Archives On these pages you will find references to Supernovae which have faded into oblivion. ... Finally, in 1999, when I took over the International Supernova Network's Latest Supernovae page I retitled the main page "Latest Supernovae", BUT, it's the "Latest Supernovae" page of the "Bright Supernovae" pages which are also sub-pages of ISN. ... Brightest supernova in 2005 . ... Brightest supernova in 2002 . ... Brightest supernova in 2000 . ... Brightest supernova in 1999 . ...

... JavaScript 1.1: added current, next, and previous properties. ... To change a window's current URL without generating a history entry, you can use the Location.replace method. ... For example, if the history list contains three named entries, these entries are reflected as history[0] , history[1] , and history[2] . ... back . ... onClick="history.go('home.netscape.com')"> The following button navigates to the URL that is three entries backward in the history list: <P><INPUT TYPE="button" VALUE="Go" ...

Light scattering codes: . SVM for homogeneous spheroids (updating) . SVM for core-mantle spheroids (updating) . SVM for multi-layered spheroids (formulae) . Quasi-TMM for axisymmetric homogeneous particles (ready) . Quasi-TMM for axisymmetric multi-layered particles (testing) . Quasi-static approximation for multi-layered ellipsoids (testing) . S-approximation for homogeneous spheres (testing) . ... Basic Monte-Carlo code of S.Wolf for 3D case (testing) . ...

... News . ... Pre-university education . ... Samara University scientists have developed a technology of new-designed photoelectric converters for solar batteries of spacecraft. ... The new solar batteries will be as much effective as their contemporary nanoheterostructured counterparts surface-supported by germanium, and the cost will be five times cheaper. ... Scientists of Samara University (joint SSAU and SSU) developed a technology basis of new silicon-based photoelectric converters (FEC). ...

Next: Binary Radiopulsars with Black Up: Black Holes in Binaries Previous: Black Holes in Binaries . Two different types of stellar BH formation exist: (1) direct core collapse   of a massive star and (2) AIC of a NS. A BH of the first type presumably will have a mass comparable to that of the collapsing star and can be born both from a single star and in a binary system. ... Next: Binary Radiopulsars with Black Up: Black Holes in Binaries Previous: Black Holes in Binaries Mike E. Prokhorov . ...