... 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{wrapfigure} {l} {5.6cm} \epsfxsize=5.6cm \epsfbox{x1.eps} \caption{Caption of the figure} \end{wrapfigure} The galactic ...

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• floatfig.sty
• changebar.sty
• psboxit.sty

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. ...

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• Prof. Edward L. (Ned) Wright

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. | ...

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• Duchamp Source Finder
• PPTA Dashboard | Projects
• Homepage Bjorn Emonts

... 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. ...

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• The AstroStat Slog Blog Archive Background Subtraction, the Sequel [Eqn]
• The AstroStat Slog coloured background
• The AstroStat Slog background

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. ...

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• Astrophysics Group CAT
• Astrophysics Group Cosmic Microwave Background (CMB)
• Astrophysics Group Cosmology

... 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. ...

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• Background estimation
• The detection threshold

. 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:

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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]. ...

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... 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! ...

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• Siding Spring Survey
• Homepage of Charley Lineweaver
• The repainted Farnham dome with the AITC in the background

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. ...

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• Examples and Photometric Tests
• STScI Preprint #1264
• FOC Data Handbook

Frosted Leaf Orion . ... 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 particular background sky on this 48-second wide angle exposure , however, might appear quite interesting and familiar. ... Below and to the right of the meteor appears a longer and brighter streak of an airplane. ... NASA Official: Jay Norris. ...

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• Frosted Leaf Orion
• XWare > APOD

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. ...

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