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. ...

... 2001 April 25 . Space Laser Creates Artificial Star . ... So rather than try to eradicate existing stars with a laser, these astronomers create an artificial star of their own right where they need it -- with a laser . Subsequent observations of the artificial laser guide star can reveal information so detailed about the blurring effects of the Earth's atmosphere that much of this blurring can be removed by rapidly flexing the mirror. ... About APOD | ...

The File System . This section describes how you can create new files, copy existing files, and delete obsolete files. ... RENAME to change the name of a file. ... Files can be created in several ways: text can be entered from the keyboard via the CREATE command, an editor can create a file, as can a running program, and files can be copied from other directories. ... To delete obsolete files, use the DELETE command followed by a file name or file name template (wildcards). ...

... 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. ...

Astronomy Picture of the Day . ... 25.04.2001 . ... AURA , NSO , NOAO , NSF Explanation: Some astronomers don't like stars. ... So rather than try to eradicate existing stars with a laser, these astronomers create an artificial star of their own right where they need it -- with a laser . ... Above , an artificial star was created with a four-watt laser at Richard B. Dunn Solar Telescope on Sacramento Peak in New Mexico . ... April . ... April 2001 . ... A Telescope Laser Creates an Artificial Star . ...

... Version 0.32 (Marco Beijersbergen) ------------ + recreated with createtestodf-1.2 scisimodf-1.4 scisim_v2.1a19991208 odffix -1.27 Version 0.31 ( JBa ) ------------ + recreated with createtestodf-1.0 scisimodf-1.0 scisim_v2.1.a19991104 odffix -1.26 Version 0.30 (MB) ------------ + recreated with createtestodf-0.23 scisimodf-0.27 scisim_v2.1.a19990917 odffix -1.24 Version 0.29 (MB) ------------ + ... Version 0.6 1998-11-19 ----------- + yet again, we had the wrong names around. ...

... Tools Show page Old revisions Backlinks Recent Changes Media Manager Sitemap Log In > . ... 2016/04/12 16:41 lbaops:lbamar2016:v534bpalog тАУ created sellings . ... 2016/04/08 12:19 correlator:records:v486g тАУ [Correlation notes] cormac . ... 2016/04/05 09:08 lbaops:lbaapr2016:s16rd01c тАУ postwiki.py vlbi . ... 2015/12/17 13:22 difx:meetings:perth2010:difx-users-minutes.txt тАУ created cormac . 2015/12/17 13:20 difx:meetings:perth2010:oleg_future_vlbi_operations.ppt тАУ created cormac . ...

I. Installation . ... AMPLE package distributive (created with program InstallShield for Microsoft Visual C++) has been downloaded on FTP server of IAA RAS as archive Ample.zip. ... Note: If the window "file download" appears, select Open... switch button, then press OK button. ... The shortcut for AMPLE will be linked with this folder, and auxiliary files will be created here during AMPLE work. ... When running AMPLE all auxiliary and new configuration files are created in the WORK folder. ...

... 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. ...

You will need to understand how to set file access permissions numerically before reading this section. Every time you create a file or a directory, its access permissions are set to a predetermined value. ... The values in the mask are subtracted from these values to give a default value for access permissions for the files and directories created by you. For example: 777 (system value for directories) -077 (value of the umask) --- 700 (default access permission of rwx------) . ...

Create a www.arcetri.astro.it Mailing List . You can create a new mailing list by entering the relevant information into the form below. ... You also need to enter the email address of the initial list owner. Once the list is created, the list owner will be given notification, along with the initial list password. ... If you want Mailman to automatically generate the initial list admin password, click on `Yes' in the autogenerate field below, and leave the initial list password fields empty. ...

... 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? ...

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OptInt PmWiki : Pm Wiki / PmWiki Installation . ... README.txt An introductory document pmwiki.php The main PmWiki script local/ Configuration scripts (local configuration files) cookbook/ Recipes (add-ons) from the Cookbook docs/ Brief documentation, sample configuration scripts pub/ Publicly accessible files pub/css/ Extra CSS stylesheet files [1] pub/guiedit/ pub/skins/ Layout templates for custom look and feel scripts/ Scripts that are part of PmWiki wikilib.d/ Bundled default PmWiki pages . ...

Picture an Astronomer A Project ASTRO Activity For Grades 4-12 The media and our past experiences have shaped and created our expectations of people in various careers. ... However, astronomy is carried out by men and women in every country and by people young and old. ... Activity Description Before an astronomy unit or the first visit by an astronomer to your classroom, it can be instructive to have the students picture what an astronomer looks like and then discuss their assumptions. ...

... created by trendPlotter . ... The pages are created by a set of trendPlotter calls, each set in one JOB file. ... 50 14 * * * .bashrc; export TZ=Europe/Berlin; export DISPLAY="dfo23:4.0"; $HOME/wisq/query_totvol -f ; $DFO_JOB_DIR/JOBS_WISQ_raw > /tmp/giraffe/cron.log . ... DFO_JOB_DIR/JOBS_WISQ_raw : all calls of the raw data downloads; this job file has also the data_flow reports, which are fed by the tool $HOME/wisq/query_totvol ; this tool is called before the WISQ raw reports are created . ...

... I normally begin by asking the class what they think would be different if the Moon didn't exist, or if the Sun were closer to Earth, or if a star exploded nearby. ... The winds would be much stronger. ... In using what-if questions in the classroom, it is worth bearing in mind that students extrapolating the effects of new scenarios will encounter two different situations: direct changes to the new version of Earth and indirect changes resulting from the direct changes. ...

... Scientists of Samara State Aerospace University (SSAU) have created an unique mobile platform for the production of training and gaming simulators. ... Such mobile platforms also known as the Stewart platforms became widespread in the world primarily as simulators for training of highly-qualified military pilots and drivers. ... For example, the Rocket and Space Centre Progress is going to test level sensors for residual fuel in the fuel tanks of the rocket carrier on this mobile platform. ...

... 05sep15:look to see if rfi created in our if/lo. sband radar has been noticing occasional rfi centered on 2380 MHz. ... On 05sep15 i looked to see if the 2380 MHz rfi moved in frequency as i shifted the center of the if/lo band. ... It uses a 2nd IF of 325 MHz. ... sbn . ... 10GHz upconverter . ... Moving the center of the IF1 band or IF2Band did not move the final frequency of the 2382 MHz rfi. the 750MHz mixer and the 10GHz upconverter both gave the same results. sbw gave the same frequency as sbn...

... Filesystems are created, i.e., initialized, with the mkfs љ command. ... Search for bad blocks and initialize the bad block list accordingly. -l filename . ... badblocks /dev/fd0H1440 1440 > bad-blocks . ... 1 block group . 8192 blocks per group, 8192 fragments per group . ... Then bad blocks were searched with badblocks љ , with the output redirected to a file, bad-blocks . Finally, the filesystem was created, with the bad block list initialized by whatever badblocks љ found. ...