... Credit: Cassini Imaging Team , ISS , JPL , ESA , NASA Explanation: What's causing those strange dark streaks in the rings of Saturn? Prometheus . Specifically, an orbital dance involving Saturn's moon Prometheus keeps creating unusual light and dark streamers in the F-Ring of Saturn. ... Prometheus' gravity then pulls the closest ring particles toward the 80-km moon. ... Since Prometheus orbits faster than the ring particles, the icy moon pulls out a new streamer every pass. ...

... 2009 April 27 . Prometheus Creating Saturn Ring Streamers . Credit: Cassini Imaging Team , ISS , JPL , ESA , NASA . ... Specifically, an orbital dance involving Saturn's moon Prometheus keeps creating unusual light and dark streamers in the F-Ring of Saturn. Now Prometheus orbits Saturn just inside the thin F-ring , but ventures into its inner edge about every 15 hours. ... Since Prometheus orbits faster than the ring particles, the icy moon pulls out a new streamer every pass. ...

... This paper describes the main algorithms used by the Einstein Level One processing to create the exposure masks and the background maps for Einstein IPC images, and how these algorithms were recreated in the IRAF environment. Our goal was to recreate the algorithms used by the Level One Processing to create exposure masks and background maps for Einstein Image Proportional Counter (IPC) data (cf. sections 2.5 and 2.7 of Harnden et al. ...

home publications > mercury . ... Rings of Creation . ... In 1755, Immanuel Kant had the remarkable insight that stars and planetary systems form by the gravitational collapse and rotational flattening of interstellar clouds. Later in the 18th century, Marquis Pierre Simon de Laplace refined Kant s idea by suggesting that planets condensed from rings produced at the edge of a contracting disk while the Sun formed at the center a picture thereafter known as the Nebular Hypothesis. ...

... SSAU History . SSAU roadmap . ... Scientists of SSAU and specialists of JSC Metallist-Samara work out a project on creation of import-substituting sea water desalting plants and wastewater treatment plants. ... So, the first experimental installation designed to produce one cubic meter of fresh water per hour, has a power consumption of only 10 kilowatt-hours, which is at the level of the latest foreign desalination plants. ... e-mail: ssau@ssau.ru . http://www.ssau.ru . ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Next: Third: Create a session Up: Starting up correlator control Previous: First: Log on to б  Contents . Both the correlator interface and the correlator spectra display program are run from lbaccc . ... lbaccc . ... A more complete explanation of SPD, including available commands, is found in Appendix C. Next: Third: Create a session Up: Starting up correlator control Previous: First: Log on to б  Contents . ...

... From this list the extraction stage creates images, spectra, and rates files. These products are aimed to adhere to OGIP standards as closely as possible. Please note, however, that it is likewise possible to create data sets which do not map onto any standard OGIP file type, e.g. PHA-versus-wavelength image for RGS. ... For binned products, binning of a given column is in general controlled by a minimum value, a binning factor, and a maximum value. ...

... J. Brand, M. Felli, R. Cesaroni, C. Codella, G. Comoretto, S. Di Franco, F. Massi, L. Moscadelli, R. Nesti, L. Olmi, F. Palagi, F. Palla, D. Panella, R. Valdettaro . 2007, IAU Symposium 242, p. 223 . ... 2007, ApJ, in press . ... Murphy, G. C., Lery, T., O'Sullivan, S., Spicer, D., Bacciotti, F., Rosen, A. 2007, A , in press . ... Rubini, F., Lorusso, S., Del Zanna, L., Bacciotti, F. 2007, A , in press . ... Coffey, D., Bacciotti, F., Ray, T.P., Eisloeffel, J., Woitas, J. 2007, ApJ, in press . ...

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). ...

I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

. The exec statement causes the command specified as its argument to be executed in place of the current shell without creating a new process. For example: exec zmail -visual . This runs just the zmail program without a shell. When you quit the application the current shell also exits.

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. ...

BACKGROUND . ... Electron bombarded silicon (EBS) gain makes the CCD interesting for keV electron detection. Ionizing particles absorbed in silicon create electron-hole pairs at the average rate of one per 3.64 eV incident energy. ... The variance in the number of electron-hole pairs created is given by the Fano factor for silicon (.1-.2) times the number of pairs created. When we use a CCD as a detector of ionizing particles, we would like to collect all of the electrons created. ...

The above process keeps the # of protons and the # of neutrons in the early Universe constant. This is extremely important and will result in a testable prediction later. Remember, a free neutron (one that is not bound in an atomic nucleus) will decay into a proton + electron (+ anti-neutrino) in about 900 seconds. ... During this epoch, the proton-to-neutron ratio is 1.0 . ... The Universe consists of protons, neutrons and electrons plus a photon background and a neutrino background. ...

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 . ...

... Бренд: Zapf Creation, Тип: Колготки для кукол . Аксессуары для кукол . ... Пособие содержит темы, подготовленные на основе базовой учебной программы по дисциплине "Банковский маркетинг". ...

Laboratory of Stellar Physics . ... A study of close binaries with black holes, neutron stars and white dwarfs. ... A study of SS433 - the massive close binary with a black hole in the regime of supercritical accretion . ... A search for intermediate-mass black holes (IMBH). The black holes which are not supermassive black holes observed in quasars, and which were formed not in massive stars. ... A search for new magnetic stars, new CP stars, measurements of magnetic fields in stars . ...

... In 2006 the Earth encounters the Leonid trail created at the 1932 return of Comet 55P/Tempel-Tuttle. The following estimate by McNaught and Asher is for the meteor outburst that will result from this trail encounter. ... What follows was written before the 2002 Leonids. ... Time (GMT) Trail Estimated Estimated Moon Visible from ZHR FWHM age 2002 Nov 19, 03:56 7-rev 1,000 130 min 15 W. Africa, W. Europe, NE Canada, NE S. America 2002 Nov 19, 10:34 4-rev 6,000 71 min 15 N. America . ...

OptInt PmWiki : Pm Wiki / Creating New Pages . ... Links > . ... The first step to create a new page, you need to edit an existing page, and on it add a link to the page you want to create. To link to your new page, you must choose a name for it. ... Typing [[my new page]] will create a link to my new page ? ... PmWiki will then dutifully tell you that the page you entered doesn't exist, but you can click on the "Edit" link in order to create, edit, and save the new page. ...

... 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? ...