... During the analysis of the surveys carried out on RATAN-600, it was found that almost one fifth of the detected sources shows significant radio flux variations. ... We used the data from "Cold" radio surveys carried out with RATAN-600 in 1980-1994 to search for radio sources with significant flux variability. ... On possibility of detection of variable sources using the data of Cold surveys carried out on RATAN-600. ... Detection of Variable Sources Using the Data of "Cold" Surveys. ...

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Astronomical Data Analysis Software and Systems X ASP Conference Series, Vol. ... We here present an overview of Cel ldetect, a source detection program for Chandra. ... The size of the cell is chosen to be some large fraction of the Point Spread Function (PSF) size. ... These are subtracted from the cell counts. ... Cel ldetect starts analysis with a 2048 в 2048 unblocked "window" at the cen- Sliding-Cell Detection Program for Chandra Data 445 PSF Limit Cell 2k x 2k Window Detector Edge Figure 3. ...

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• Background Fluctuation Analysis from the Multiscale Entropy
• The Sliding-Cell Detection Program for Chandra X-ray Data
• A Spectroscopy Exposure Time Calculator for IRAF

From limits to detection of a gravitational wave signal George Hobbs ATNF PPTA team. ... Jenet et al. 2005 Must look for correlated residuals Need ~20 pulsars, observed of ~5 years with rms timing residuals ~100ns Gravitational wave detection Basic ideas Jenet et al. ... 2006 New limit technique (Bill's talk) Improve timing residuals Bayesian Detection technique Gravitational wave detection A Bayesian technique for detecting gravitational waves · Work carried out by Y. Levin and R. van Haasteren. ...

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• News Results
• PPTA Wiki | Projects / RedGW
• SEST -- MOPRA Comparison at Millimetre-Waves

... The task first computes a background image in order to identify pixels that may be part of a source. The task uses two different algorithms for detecting ``point'' and ``extended'' sources. ... If a likely source is found its position and shape parameters are computed by moments and the pixels assigned to the source are set equal to the source number. ... The source is again classified as either ``point'' or ``extended'' from a comparison of its with to that of the PSF width. ...

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• The detection algorithms

... AGES Precursor Observations · Targeted the M74 ( NGC 628) group · Noise falls as t (to 200s) AGES Precursor Observations · Targeted the M74 ( NGC 628) group · Noise falls as t (to 200s) AGES Precursor Observations · Targeted the M74 ( NGC 628) group · Noise falls as t (to 200s) · Detected 5 galaxies in the group KDG 010 dw0137+1540 UGC 1171 AGES Precursor ...

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• http://www.naic.edu/alfa/ealfa/meeting1/talks/deblok.pdf
• Data and Analysis
• What is HISA?

... CELLMAP -- prepares x-ray qp file for DETECT. ... Running Snrmap .. ... Input xray Qpoe : xdata $rp110590.qp Output xray image : rp110590_cmp ROSAT PSPC Cellsize in arcsecs - 30 [h/b]| 45 [s]| 60 [s/h/b]| 120 [s/h/b]: 30 Energy Band (soft|hard|broad) (broad): hard xdata $rp110590.qp[bl=20,pi=52:201][128:639,128:639] - rp110590_cmp.imh add rp110590_cmp.imh,cellsize = 30 rp110590_cmp.imh updated xdata $rp110590.qp[pi=52:201] de snrmap Input xray image : rp110590_cmp Output snrmap ...

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• The AstroStat Slog error propagation
• The AstroStat Slog Blog Archive Significance of 5 counts
• Analysis Routines in SAOtng

... 2001 November 28 . Extra-Solar Planetary Atmosphere Detected . ... Explanation: By directly detecting the atmosphere of a planet outside our Solar System , humanity has taken another small step toward finding extraterrestrial life . The unexpected detection by David Charbonneau ( Caltech ) and associates came from Hubble Space Telescope observations of Sun -like star HD 209458 . ... About APOD | ...

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• APOD: 2016 February 11 - LIGO Detects Gravitational Waves from Merging Black
• APOD: 2015 September 1 - Distant Neutrinos Detected Below Antarctic Ice
• APOD: 2007 February 27 - Atmospheres Detected on Two Extrasolar Planets

... We Fourier analysed Hubble Telescope Crab pulsar data obtained with the High Speed Photometer in October 1993. A weak modulation at frequency Hz is detected. We found a strong correlation between this result and the Fourier transform result of stroboscopic Crab pulsar data obtained in December 1994 at the 1.82m telescope of Asiago observatory (University of Padua, Italy). ... We found that both data show a weak modulation at the period of 60 seconds. ... The corresponding frequency is Hz . ...

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• Submillimeter Detections of Spitzer Space Telescope Galaxy Populations
• Photometric Analysis
• Notation and Model

... Astrophysics Group . Research . Cosmic Microwave Background (CMB) . ... A significant fraction of the Astrophysics Group is involved in work on the Cosmic Microwave Background, both experimental and theoretical. We are currently operating the Arcminute Microkelvin Imager , an arcminute-scale survey telescope, and developing analysis techniques for the Planck satellite. ... 2013, Astrophysics Group, Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE . ...

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• G338.1+0.4
• G5.4-1.2
• PPEUC Programme - Cosmic Microwave Background Workshop

Next: Fitting of data Up: Extraction of Information Previous: Extraction of Information . For projects which perform statistical analysis on groups of objects, it is important to rely on an objective search method to extract them from the data frames. ... The simplest and fastest method is using a given level over a previously determined background value as the criterion to identify possible sources. ...

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• Optically detected galaxies with POSSI-E in the "zone of avoidance. I-V
• Background Estimates
• Order Definition

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . ... The software run under Windows 95, 98 NT, including Paraxial and Seidel . ... and Energy Distribution, Optical Layout, Optimization, Tolerancing etc. ... Listed Since August 20, 2005 . ... Web Site . ... Web . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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Next: Gamma-Ray Bursts Up: Detection rate of binary Previous: Detection rate of binary . Figure: A schematic dependence of the detection rate ratio on the detector sensitivity (the upper scale) and the limiting distance from which binary NS (1.4+1.4M , the middle scale) and binary BH (8.5+8.5M , the bottom scale) mergings can be detected. ... At the end of this segment evolutionary effects can affect the detection ratio (the dashed line). ...

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• Detection rate of binary compact star merging
• PSR B0042-73 in the Small Magellanic Cloud
• Transparency of the Stochastic Background

The three panels show different components of near-infrared background light detected by the Hubble Space Telescope in deep-sky surveys. ... When all the stars and galaxies are masked, the background signals can be isolated, as seen in the second and third panels. The middle one reveals intrahalo light from rogue stars torn from their host galaxies, and the panel on the right captures the signature of the first galaxies formed in the universe. ...

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• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B942ECC98-85CA-4681-B4C3-E8466750CD3B%7D
• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B60E2273F-FBFE-4194-AF93-3434395652AB%7D
• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BCF217E50-EB45-4999-A600-EF90E9ED5B06%7D

... Time-series of high resolution spectra have been obtained during three nights and several important events were detected. Observations contained several chromospheric lines, allowing to investigate simultaneously the response of the chromosphere at different heights. A detailed analysis of the H alpha line behaviour, in particular, has revealed prominece clouds and plage-like regions in this star. ... Promience clouds are seen to lie below the co-rotation radius. ...

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• Armagh Observatory
• Influence of Climate Variables on Tree-Ring Widths of Different Species
• Background

Detected Supernovae . The search have produced till now the detections of 4 SNe. ... This result highlights the power of infrared monitoring in detecting Obscured SNe and indicates that optical surveys are probably missing a significant fraction of SNe, especially in obscured systems such as starburst galaxies. ... In Fig. we show the archival SOFI image of NGC3256 (left) and the first image obtained in 2001 (right) where SN2001db has been detected. ...

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• Virgo Group - Gravitational Wave basics
• K-band Arcetri Obscured Supernova Search - What is the KAOSS Projrect?
• A homogeneous chemical analysis of the inner Galactic disk from the first data

X-RAY BURSTS OBSERVED WITH JEM-X S. Brandt, J. Chenevez, N. Lund, C. Budtz-JЬrgensen, N.J. Westergaard Danish National Space Center, Juliane Mariesvej 30, DK-2100 Copenhagen, Denmark, E-mail: sb@spacecenter.dk ABSTRACT We report on the search for X-ray bursts in the JEM-X X-ray monitor on INTEGRAL during the first two years of operations. ... DATA ANALYSIS More than 350 type I X-ray bursts were found. ... One source, IGR J17254-3257, previously not known to be an X-ray burster, was found [6]. ... Fig. ...

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• http://hea.iki.rssi.ru/integral06/papers/B35_Caliskan01-05May07_00:06:06.pdf
• http://hea.iki.rssi.ru/integral06/papers/E33_Munz01-07Feb07_12:30:06.pdf
• http://hea.iki.rssi.ru/integral06/papers/I34_Kubanek01-25Apr07_22:28:34.pdf

Peremennye Zvezdy", . ... FBQS J161047.7+330337, [BFE95] 207, RX J1610.7+3303, 1RXS J161047.7+330329, FIRST J161047.7+330337, NVSS 161048+330343 . ... The optical Variability of the Seyfert galaxy FBQS J161047.7+330337 was detected during investigation of scanned photographic plates of Moscow collection. ... The photographic light curve of FBQS J161047.7+330337 in 1973 - 1975 is presented in Fig. ... A 2MASS image of FBQS J161047.7+330337 is presented in Fig. ... Fig. ...

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• Hale-Bopp and the Plateau de Bure Interferometer
• Extra Solar Planetary Atmosphere Detected
• Астронет > Extra Solar Planetary Atmosphere Detected

Next: Transform of modulated Up: No Title Previous: Frequency/duration relation. Let us now turn to gradually more complicated signals, for which we soon lose the support of analytical expressions of the transforms. First, examine the sum of 3 cosine waves at different frequencies and phases. The Mexican hat wavelet analysis is carried out as above, yielding the wavelet map (Fig. ... Figure 11: g2 transform of a multiperiodic signal. ... Mon Nov 13 10:51:25 EST 1995 ...

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• Introduction
• Analysis of a cosine wave
• ApSA courses

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

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• Database of Optical Properties -- Level: subpage
• Database of Optical Properties -- Level: subsubsubpage
• Database of Optical Properties -- Level: subsubpage

Atmospheric influence on the different radio-engineering system functioning . ESTIMATION OF ATMOSPHERIC OPTICAL CHARACTERISTICS AND REMOTELY SANSED IMAGE CORRECTION . ... Direct transmittance estimation results for 12 channels of the spectrometer CHRIS. ... We have managed to develop a direct method of estimating the discrete Normalized Atmospheric Point Spread Function (NAPSF) from available images alone, not using any external sources of information about the atmosphere. ... IRE RAS 1996-20 11 ...

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• Radar Investigations of Asteroid 33342
• Laboratory 235. Activities