. XMM-Newton Science Analysis System . omdetect (omdetect-5.0.7) [xmmsas_20050815_1803-6.5.0] . Meta Index / Home Page . If two point-sources are close together so that their images overlap, the detection algorithim for detecting point-sources will either fail to detect one or both. However, the detection algorithm for detecting extended sources will either pick up the missing object or detect both as a single extended source. XMM-Newton SOC/SSC -- 2005-08-16

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• Extended-source detection Algorithm
• The detection algorithms
• Description

Detecting extended radio emission : SNRs , Relics , Halos Head-Tailed Galaxies Melanie Johnston-Hollitt Christopher Hollitt 2010 Detecting extended radio emission : SNRs , Relics , Halos Head-Tailed Galaxies 2010 1/14 Detecting extended radio sources Methods of detecting extended ... Detecting extended radio emission: SNRs, Relics, Halos & Head-Tailed Galaxies 2010 7/14 Some SNRs Supernova remnants are typically circular. ...

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• http://www.atnf.csiro.au/research/workshops/2010/sourcefinding/Jurek.pdf

... 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 Blog Archive [MADS] Kriging
• The AstroStat Slog Blog Archive The power of wavdetect
• The AstroStat Slog Efron

. Home . Catalog . EXSdetect . People . Papers . Tundo et al. 2012, A 547A 57T . Liu et al. 2013, A 549A 143L . Tozzi et al. 2014, 1405.3464 . ROSAT 400d . ROSAT MACS . ROSAT WARPS . ROSAT REFLEX . Chandra ChaMP . XMM XCS . XMM LSS . XMM XDCP . XMM X-CLASS . SWIFT-XRT . WFXT . Website maintained by Teng Liu, last modified on May 1, 2014 .

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Extended red emission (ERE) has been detected in many dusty astrophysical objects, raising the question of whether ERE is present only in discrete objects or if it is an observational feature of all dust, i.e., present in the diffuse interstellar medium. In order to answer this question, we determined the blue and red intensities of the radiation from the diffuse interstellar medium (ISM) and examined the red intensity for the presence of an excess above that expected for scattered light. ...

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• Limitations on the Calibration Accuracy for COS/FUV Observations of Extended
• Calibration of COS Observations of Extended Targets in Cycle 24
• NICMOS STScI Analysis Newsletter 37

... Up: Algorithms . ... The imaging problem can be described as an optimizing problem in mathematics. ... Computer simulations of rotating modulation collimator imaging show that the quality of images from this method is better than that from the traditional cross-correlation method. ... The imaging problem is: . ... The results show that this algorithm can be used in the imaging problem and usually results in a better image than that obtained from a traditional method such as cross-correlation. ...

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• GAIA: Recent Developments
• ADASS 2003 Conference Proceedings
• Automatic Detection of Linear Features in Astronomical Images

... Bojan Nikolic web pages (r. 329) . ... Analysis of (radio) spectra . The RNested package is a re-implementation of the main algorithms from the radiospec package into the R statistical data analysis environment. ... packages ( "RNested" , repos = c ( "http://www.mrao.cam.ac.uk/~bn204/soft/R" , "http://cran.us.r-project.org" )) . ... RNested ? Nested Sampling in R & analysis of spectra . ... Copyright 2005 -- 2016, Bojan Nikolic feedback welcome ...

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• OptInt PmWiki : MROIFastTipTilt / Tech Meet 7
• OptInt PmWiki : Tech Meet 7 | History

Next: Analysis in the Up: MIDAS utilities for Previous: Fourier analysis . For the detection of smooth signals, e.g. sinusoids, use either SCARGLE/TSA or AOV/TSA with bins. ... SCARGLE/TSA -- . Scargle sine model: This command computes Scargle's (1982) periodogram for unevenly spaced observations x . ... In this way, the command can be used to perform a CLEAN-like analysis manually by removing individual oscillations one by one in the time domain (see Roberts et al. ... AOV/TSA -- . ...

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• Explanatory Supplement to the 2MASS Second Incremental Data Release
• Search Algorithms
• Mosaicing

... N.A.Bobylev, Yu.M.Burman, Morse lemmas for functionals of the variational calculus, Func.Anal.Appl., ... N.A.Bobylev, Yu.M.Burman. ... N.A.Bobylev, Yu.M.Burman, A.B.Shubin, Algorithms for control with a minimal number of switchings, Automation and remote control , V.53, 5:619, 1992. ... TeX file ) . ... Quadratic Poisson brackets compatible with an algebra structure . ... Yu.M.Burman. ... Yu.M.Burman, Whitney's index formula in higher dimensions and Laplace integrals , Preprint math.DG/9801044 . ...

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• International Workshop TROPICAL-12

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

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• The NMW survey homepage

... 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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• NGC 4460
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• Detection of unique bright radio flare of X-ray binary

Astronomy Picture of the Day . ... Credit Copyright: 2MASS , T. H. Jarrett , J. Carpenter, R. Hurt Explanation: Are the nearest galaxies distributed randomly? A plot of over one million of the brightest "extended sources" detected by the Two Micron All Sky Survey (2MASS) shows that they are not. ... Many galaxies are gravitationally bound together to form clusters , which themselves are loosely bound into superclusters , which in turn are sometimes seen to align over even larger scale structures . ...

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• The 2MASS Galaxy Sky
• Journal "Peremennye Zvezdy"
• Астронет > The 2MASS Galaxy Sky

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2010 December 27 . One Million Galaxies . Credit: 2MASS , T. H. Jarrett , J. Carpenter, R. Hurt . ... Many galaxies are gravitationally bound together to form clusters , which themselves are loosely bound into superclusters , which in turn are sometimes seen to align over even larger scale structures . ... About APOD | ...

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• APOD: 2005 June 26 - The 2MASS Galaxy Sky
• APOD: 2003 September 17 - The 2MASS Galaxy Sky
• APOD: 2016 February 11 - LIGO Detects Gravitational Waves from Merging Black

... PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Testing galaxy formation in high density environments - the extended stellar haloes of giant elliptical galaxies . ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... ESO HST Image Galleries . ... The aim of the thesis is to study the dynamics in the extended haloes of the brightest elliptical galaxies, and to unveil the fossil record caused by past accretion events using Planetary Nebulae (PNe). ...

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• ESO - My data shows an extended, bright feature - what can this be?
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• The Chandra Deep Field South

. Comment on J1242-0446 . No detection: an extended double-lobe radio galaxy, not detected at 2.3 GHz by Preston et al. (1985). Mantovani et al. (1997) did not detect a core even with the VLA at 8.4 and 15 GHz. VLBApls home page . Last modified: 16 Oct 2000

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... Ж.Ф. Родионова, А.А.Карлов, Т.П. Скобелева и др. ... Sternberg State Astronomical Institute, 119899, Moscow, Russia; jeanna@sai.msu ru. ... Moscow State University, Vorobjovy Gory, 119899, Moscow, Russia. Brown University - Vernadsky Institute Microsymposium 34, October 8-9, 2001, Moscow, Russia . ... Rodionova J1., ... Sternberg State Astronomical Institute, Moscow University, jeanna@sai.msu.ru . ... 1 Sternberg State Astronomical Institute Lomonosov Moscow University, Russia; marss8@mail.ru . ...

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• Zhanna F. Rodionova

Solar Large-Scale Chains: Some Events . ... The chains appear to light up separators or quasi-separatrix layers between different interacting large-scale magnetic flux systems in the global solar magnetosphere and, in particular, to outline large-scale coronal structures involved in the CME process. ... Some features of the chains and their relations to CMEs are illustrated for a number of halo CME-associated events. 23 events of 1997-2000 . ... Halo-CME-associated events of November 1997 . ...

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Hot subdwarfs are hots stars with masses somewhat less than that of the Sun. ... They are known as sdB stars because their spectra are dominated by hydrogen lines. ... Normally, a red giant will switch on core helium burning without losingthe layers of hydrogen around the helium core. sdOB stars are related to sdB stars, possibly being the sdB stars which have completed core helium burning and are evolving to become white dwarfs. ... Such stars are known as PG1159 stars and DO white dwarfs. ...

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• IYA Astronomy Competition - deadline extended to 15 December 2009 |
• Extended and logical partitions
• Armagh Observatory Preprint No. 306

USING THE CORRELATION BETWEEN ISGRI SURVEY RESULTS AND OTHER CATALOGUES TO AID SOURCE IDENTIFICATION John B. Stephen, A. Malizia and L. Bassani IASF-INAF, Via P. Gobetti 101, 40129 Bologna, ITALY, E-mail: stephen@iasfbo.inaf.it ABSTRACT In order to help in the identification of INTEGRAL/ISGRI sources, we have developed a software package which allows a rapid and detailed cross-correlation to be performed between various source catalogues. ... We show below some preliminary results from this analysis. ...

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• http://hea.iki.rssi.ru/conf/hea2007/presentations/26.12.2007/02-cherepashchuk.pdf
• http://hea.iki.rssi.ru/integral06/papers/E33_Munz01-07Feb07_12:30:06.pdf
• http://hea.iki.rssi.ru/integral06/papers/B36_Kalemci02-23Feb07_14:59:21_bandw.pdf

The Mission of NAIC . The NAIC enables research in the areas of astronomy, planetary studies, and space and atmospheric sciences by providing unique capabilities and state-of-the-art instrumentation for data collection and analysis, together with logistical support to users. ... Use of the Arecibo Observatory is available on an equal, competitive basis to all scientists from throughout the world to pursue research in astronomy, planetary studies and space and atmospheric sciences. ...

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• Space and Atmospheric Science Homepage Welcome
• Solar System Studies at AO
• Mission of NAIC