... SAO researchers have discovered that supercritical accretion disks eject hot gas with a velocity of a few thousand kilometers per second. The supercritical regime of accretion onto black holes is very important for astrophysics. In the first half-billion years just after our Universe was born, supermassive black holes (quasars) began to appear and grow in centers of young galaxies. ... Gas falling onto a black hole (accretion) is not a frequent phenomenon in our Galaxy. ...

A very important stage in a story of formation of any new science is the shift from discussion of situation which are possible but do not occur in practice due to some reason to recognition of real phenomena of interest. ... We suggest to consider computer viruses as this new specific form of life which is coming in the contact with our form of life. ... Computer life has been created by human being, the role of independent evolution of computer viruses seems to be still negligible. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

STScI . Guidelines for Preparing Viewgraphs and Computer based Presentations to be used in an STScI Webcast . ... Us . ... To reach the largest possible audience with the greatest understanding of your material, ITSD has prepared a few guidelines for preparing viewgraphs and computer based presentations. ... Avoid using colors that appear at the same level of brightness (e.g., red text on a blue background), viewgraphs appear quite different on a projected screen compared to the computer. ...

... Our computer services are free. One of our main computer priorities is providing e-mail access. ... Moscow high schools, math teachers, IUM students, and mathematicians can request UUCP accounts from us, for sending and receiving email from home. ... To get a UUCP account, one should arrive to MCCME in person and contact system administrator assistants ( room 306 , phone 2410500). Users who visit MCCME often can use e-mail in our computer room . ... Sergey Dubov, <dubov (at) mccme.ru>. ...

The First Law (1): Energy is Conserved in a closed system: . ... We usually consider work and heat flow as the two kinds of energy . The Second Law (2): The Law of Entropy: . ... The amount of disorder increases . ... You can not go from a disordered system to an ordered system without inputting more energy (this is the most important attribute of the second law) . ... In no way can we recover work of that this disordered system without putting energy into the system. ... More on Thermodynamics . ...

... 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 . ...

... Posts tagged ?White Dwarf? ... Earlier this year, Peter Edmonds showed me a press release that the Chandra folks were, at the time, considering putting out describing the possible identification of a Type Ia Supernova progenitor . ... Tags: arXiv , Chandra , CXC , Optical , Peter Edmonds , positional coincidence , positional error , Power , progenitor , question for statisticians , significance , Supernova , Type Ia , White Dwarf , White Dwarf binary , X-ray . ... vlk on [MADS] Parallel Coordinates ...

This note outlines how to configure the computers needed to run DIMMWIT. ... dimmwit : ICE (single-board computer in a box) that runs the Starlight Express CCD camera, to which it is connected by a USB interface. dimmwithost : displays the finder application via the X protocol (finder actually runs on dimmwit). Acts as a file server; both the finder software and the DIMM data are stored on dimmwithost. ... mkdir -p /data/oberon/data/finder . chown coast:coast /data/oberon/data/finder . ...

... Dr. Ravil Nazirov is the head of the workshop, and Andrew Ananjev is the secretary of the workshop. ... The workshop is used to be held in the last decade of the month, preferably on Tuesdays. ... The next session will take place October 29, 1996 . ... There is "CONPAS" mailing list which you can join to discuss issues of problem solving and to be automatically notified of important dates and decisions with respect to the coming sessions. ... Secretary of the Workshop: Andrew Ananjev . ...

... The first Astronomy Picture of the Day (APOD) appeared two years ago today. ... Jupiter's Dry Spots . ... In December of 1995, Galileo's atmospheric probe descended into Jupiter's clouds and reported a surprising absence of water. ... UIT flew into orbit as part of the Astro 2 mission on-board the Space Shuttle Endeavour in March 1995. ... Apollo 15 astronaut James Irwin works on the first Lunar Roving Vehicle, before he and fellow astronaut David Scott take it out for a drive. ... First page ] Prev...

... To introduce you to the Python programming language, and its Visual module (VPython), which allows 3D simulation. The computer labs are held in room BOZO 112, not in the usual physics lab. ... This lab will use the Python programming language. ... Click on the Windows button in the bottom left, select "Programs", then the "A-Z" list of programs. ... Later in the course you will need to write your own VPython programs for assessment - this lab is your chance to make sure you can do this. ...

... Two computers in the same network are usually linked via a single physical cable. When they communicate over the network, the programs in each computer that take part in the communication are linked via a virtual connection , a sort of imaginary cable. ... When it notices an incoming network login (i.e., it notices that it gets a new virtual connection to some other computer), it starts a new process to handle that single login. ...

... Meade Instruments Corporation . ... Autostar Computer Controllers . 497 Autostar . ... One of the most important advances in telescope control in the past 25 years, the Meade #497 Autostar Computer Controller turns the ETX into an automatic celestial object locating system. ... The #497 Autostar Computer Controller plugs into the control panel of ETX-90EC, ETX-105EC, and ETX-125EC telescopes and enables automatic location of more than 30,000 celestial objects. ... about meade | ... Meade 4M | ...

Astronomical Data Analysis Software and Systems VII ASP Conference Series, Vol. ... Quality system management of computer workstations for astronomy can be achieved with relatively small manpower requirements, if the right cost-effective administrative design decisions are made. ... What is Quality System Management? ... The system is designed so that one doesn't depend on four or more hosts, (such as a software server, cpu server, data file server, font server, etc.) to get work done. ...

. An operating system is the program that controls all the other parts of a computer system - both the hardware and the software. Most importantly, it allows you to make use of the facilities provided by the system. Every computer has an operating system. The UNIX operating system has three important features; a kernel, the shell and a filesystem. The Kernel . The Shell . UNIX file system . More about the UNIX operating system .

... To go back in time, archaeoastronomers and teachers can turn to personal computers and any of a number of software packages. ... Examples include the Long Man of Wilmington, England and the Owl Man of Peru (see figure 8 and figure 9 ). ... Deciphering the unique number system of the Maya is another archaeoastronomy topic that involves a minimum of math. ... Several collections of early writing of the Maya survive; numbers from them can be read and in some cases interpreted (see figure 12 ). ...

... A GB (GB1 and GB2) code is a two byte code, where the first byte is in the range $21-$77 (hexadecimal), and the second byte is in the range $21-$7E. A graphical ASCII character is a byte in the range $21-$7E. A non-graphical ASCII character is a byte in the range $0-$20 or of the value $7F. Since the range of a graphical ASCII character overlaps that of a GB byte, a byte in the range $21-$7E is interpreted according to the mode it is in. ... This code switches the mode from GB back to ASCII. ...

IMPORTANT: Read Before Using This Product This product falls under one or more of the following U. S. patents: U. S. Patent numbers 5,268,899 and 5,307,459 3COM (R) END USER SOFTWARE LICENSE AGREEMENT YOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE USING THIS PRODUCT. IT CONTAINS SOFTWARE, THE USE OF WHICH IS LICENSED BY 3COM CORPORATION ("3COM") TO ITS CUSTOMERS FOR THEIR USE ONLY AS SET FORTH BELOW. ... USING ANY PART OF THE SOFTWARE INDICATES THAT YOU ACCEPT THESE TERMS. ...

. This is BTA "indome" main server computer tb.sao.ru . It is local address in SAO's Intranet. But it is visible from Internet through our Web-site proxy as: http://www.sao.ru/tb/ . BTA TSC online Web-pages located here: http://www.sao.ru/tb/tcs/ . BTA WebCameras: . "In-Dome" TV-camera . and it's last images . "Outdor" TV-camera . and it's last images . Also, one can find here some documents: .