... If the latter is comparable with galactic values at some galactic latitudes, it can impede detection by LISA of some interesting relic cosmological GW backgrounds, and specific statistical features of the relic GW should be used to separate them against the noise from astrophysical sources. \begin{boxitpara}{box 0.7 setgray fill} The galactic binary GW noisewill be modulated by the LISA orbital motion, whereas the extragalactic one will not. ...

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 detection by EGRET of 40 active galactic nuclei in high energy gamma rays ahs sparked interest in high energy extragalactic gamma ray astronomy. ... In this thesis I investigate the infrared background, the interactions by which it absorbs gamma rays, and I develop a program that uses monte carlo techniques, as well as suitable approximations to model the effect of these interactions on gamma ray spectra, and discuss the implications for high energy gamma ray astronomy. | ...

... What are the fluxes of the stars? ... Volume sampled is no longer 4/3 pi r cubed due to curved space-time Want to derive population properties brightness, size, etc - as function of distance (therefore, cosmic time) But - biases in sample Biases NUMBER OF STARS VS MASS Eddington Bias: in astronomy, there are always more little faint things than big bright things. ... Suppose there are 10 stars of mass 0.5 and 100 stars of mass 0.4, and you have a 20 percent error on measuring the mass. ...

OptInt PmWiki : Pm Wiki / Wiki Style Examples . Wiki styles | ... PmWiki uses WikiStyles for styling text with color and other attributes. PmWiki 2.0 introduced the ability to control the styling further and to even place styles on blocks. ... In addition, an author can define a style "shortcut" by using the define= property. For example, to define a style of %red% , one can use: . define=mystyle color=red% Here is some %mystyle% red text created using a style shortcut. ...

... omdetect (omdetect-5.14.2) [?? ... The parameter nsigma (default value=2 controls the minimum detection threshold, ie all pixels with a value greater than or equal to background value + nsigma background noise will be considered to be part of a possible source. ... The parameter minsignificance (default value=2) controls what sources are kept in the source-list- all detected sources with a computed significance less than or equal to minsignificance are discarded. ...

Automatic Detection of NEOs in CCD Frames . ... CCD frames obtained with modern telescopes with robotic operation allow carrying out standard observation programs for detection of peculiar objects on stellar backgrounds, as is the case of Near Earth Objects (NEOs). ... In this paper, we present original algorithms for automatically detecting dim NEO images in telescope frames, considering both sidereal and differential tracking [2]. ...

. Cosmology . Very Early Universe . Cosmic Microwave Background Anisotropy . Dark Matter Models . Large Scale Structure . High Energy Astrophysics . Active Galactic Nuclei . Astrophysics of Compact Objects . Accretion Disks . Scientific Staff:

Ionized Gas in high-redshift galaxy halos . ... An alternative way to detect such galaxies is to analyze the spectra of luminous background objects (quasars and gamma-ray bursts), and look for the tell-tale absorption lines that arise due to foreground galaxies lying along the line-of-sight. ... Aside from their interest as the endpoints of massive star evolution, GRBs are ideal background sources for absorption-line spectroscopy, thanks to their enormous luminosities and smooth power-law continua. ...

... Your main research interests concern dust. ... One of your main pleasures in life is going to conferences, and asking the question `have you considered dust obscuration?' after every talk by an optical astronomer, and watching their embarrassed evasions. ... Just look at any starburst galaxy: they are the most luminous objects in the local universe, but they are so dusty that the optical astronomers never even noticed them until the infra-red astronomers pointed them out! ...

... Credit Copyright: Masahiro Miyasaka Explanation: Sometimes, you can put some night sky in your art. Captured above Japan earlier this month, a picturesque night sky was photographed behind a picturesque frosted leaf. ... The bright star on the left is the dog-star Sirius , the brightest star on the night sky. To Sirius' right appears the constellation of Orion , including the three linear belt stars below the red giant Betelgeuse . ... Publications with keywords: Orion - Sirius - pleiades . ...

Twilight observations with MASS/DIMM B. Safonov Sternberg Astronomical Institute Moscow State University Comprehensive Characterization of Astronomical Sites, 2010 B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 1 / 17 Why observe in twilight with MASS/DIMM? ... ASM includes 3 devices sensitive to background: guider, DIMM and MASS. B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 2 / 17 Background in guider. ...

The 2016 Project ASTRO introductory workshop will take place September 16-17, 2016. ... Participating teachers and astronomers are required to attend. ... Home Phone: . ... work email . ... Please briefly describe your background and your experiences in astronomy (if different). Describe experiences you have working with schools or explaining astronomy to students and/or the public. ... What grade level(s) do you prefer to work with (check all that apply) . ... either work or home . ...

... A1910 Date Received: 2004-Feb-02 11:32:13 Technical Page Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Extragalactic 15 Hours Probing the ISM and the Hi envelope around the Leo Triplet We prop ose to conduct sensitive measurement of p ossible absorption of a few background continuum sources by a variety of kinematically interesting Hi reservoirs in the NGC 3628 system. ... Part of the observing run...

... Members in the Munster area may be interested in this lecture : 40 years of Cosmic Background Radiation Professor Gerard T. Wrixon, President University College Cork , invites you to attend a lecture by Dr. Robert W. Wilson, Noble Laureate, of the Smithsonian Astrophysical Observatory, Harvard-Smithsonian Center for Astrophysics Forty Years of Cosmic Background Radiation as part of The President's Distinguished Guest ... Clear Skies, Terry Moseley . Last Revised: 2004 May 19th . ...

... Of course, the scope of chaos is vast, and we do not dare to cover it all. ... He will highly appreciate your help in compiling the list of URLs to such scientific groups and institutions. http://www.cplire.ru/win/InformChaosLab/ - InformChaos Lab (Moscow) . http://chaos.ssu.runnet.ru/ - Laboratory of Nonlinear Dynamics at Saratov State University (Saratov) . ... http://optics.npi.msu.su/sci/chaos.html - Chaos in laser systems . ... http://www.chaotic.com - Randle, Inc. ... Time: 2-6 July, 2001 . ...

... Jitter imaging (also known as microscanning ) is probably one of the most efficient ways to perform astronomical observations in the infrared. ... Several algorithms are described for each step, having in mind an automatic data processing in pipeline mode (i.e., without user interaction) as intended for the Very Large Telescope. ... Jitter imaging is an efficient method used in astronomical infrared observations to take care of sky background issues with a minimum loss of observing time. ...

... 2003 June 3 . The Milky Way Behind an Eclipsed Moon . ... Explanation: What's behind the Moon? ... Exceptions occur during a new Moon and during a total eclipse . In the background of a new Moon is usually the Sun , an even brighter orb that even more easily outshines everything behind it, except during a total solar eclipse . ... Such was the case during the middle of last month, when a rare glimpse of an eclipsed Moon superposed in front of the disk of our home Milky Way Galaxy was captured. ...

T he Nine Planets is a collection of information about our Solar System intended for a general audience with little technical background. ... T his document consists of about 90 WWW "pages", one page for each major body in the Solar System. ... if the object has satellites then its page has a table of data on them and links to their pages, . ... To visit the next body in an ordered traversal of the solar system choose the link immediately to the right of the name of the current page. ...

... In LABORATORY OF RADIO ASTROPHYSICS OF SPECIAL ASTROPHYSICAL OBSERVATORY OF RAS . ... History . ... Current problems of the group research interests: . study for cosmic microwave background, . study of radio galaxies (identification, evolution, statistical investigation of population), . investigation of the RATAN-600 antenna, . observations in the survey mode with RATAN-600 and their analysis, . creation of the software for data analysis. vo @ sao.ru ( Oleg Verkhodanov ) ...