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http://xmm.vilspa.esa.es/sas/8.0.0/doc/edetect_chain/node6.html.
http://xmm.vilspa.esa.es/sas/8.0.0/doc/edetect_chain/node6.html.
1. Background estimation
... Meta Index / Home Page / Description The wavelet detection algorithm itself does not use any separate background estimate. ... For the parameter I choose to use a value twice the size of the wavelet scale under investigation (so for every scale a different background map is generated). After one iteration the input for the background estimate is the original image minus the sources, detected at scales smaller or equal to the wavelet scale under investigation. ...
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Ссылки http://xmm.vilspa.esa.es/sas/7.0.0/doc/ewavelet/node7.html -- 5.0 Кб -- 28.06.2006
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2. The AstroStat Slog coloured background
... Posts tagged ?coloured background? ... A fast Bayesian approach to discrete object detection in astronomical datasets ? ... ArXiv] A fast Bayesian object detection? ... Comment . ... Entries RSS . Comments RSS . ... Algorithms arXiv Astro Bad AstroStat Bayesian CHASC Cross-Cultural Data Processing Fitting Frequentist Galaxies gamma-ray High-Energy Imaging Jargon Job Languages MC MCMC Meta Methods Misc News Nuggets Objects Optical Physics Quotes Spectral Stars Stat Timing Uncertainty X-ray . ...
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Ссылки http://hea-www.harvard.edu/AstroStat/slog/groundtruth.info/AstroStat/slog/tag/coloured-background/index.html -- 21.2 Кб -- 01.03.2014
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3. STScI Preprint #1264
... Lubin 5 , J.C. Mather 3 , R.A. Shafer 3 , G.F. Smoot 6 , R. Weiss 7 , D.T. Wilkinson 8 , and E.L. Wright 9 The Diffuse Infrared Background Experiment (DIRBE) on the Cosmic Background Explorer ( COBE ) spacecraft was designed primarily to conduct a systematic search for an isotropic cosmic infrared background ( CIB ) in ten photometric bands from 1.25 to 240 m. The results of that search are presented here ... 5 ) UCSB, Physics Department, Santa Barbara, CA 93106 . ... huizinga@stsci.edu . ...
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Ссылки http://www.stsci.edu/science/preprints/prep1264/prep1264.html -- 7.9 Кб -- 23.05.2000
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4. http://www.atnf.csiro.au/research/Astro2008/Postings/George_Hobbs.pdf
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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Ссылки http://www.atnf.csiro.au/research/Astro2008/Postings/George_Hobbs.pdf -- 1637.5 Кб -- 26.06.2008
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5. EBCCD tutorial background
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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Ссылки http://www.sao.ru/drabek/CCDP/TUTORIAL/EBCCD/Backgr.htm -- 6.3 Кб -- 10.09.1998
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6. Background Fluctuation Analysis from the Multiscale Entropy
Next: A New Entropy Measure Based on Multiple Resolution and Noise Modeling . ... The entropy measurement has been proposed for image restoration several years ago in astronomy. ... The multiscale entropy has the advantage to introduce a noise modeling, and the concept of information at different level of resolution. ... We show in this paper that it can also be used for background fluctuations analysis. ... Five simulated images were created by adding 400, 200, 100, 50, 0 sources to a noisy image. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/rgastaud/ -- 17.6 Кб -- 16.07.1999
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7. Abstract
Proceedings of the Particle Physics and Early Universe Conference (PPEUC). For this paper: postscript PPEUC CMB index 1 Introduction .. ... A new statistic is discussed, designed to detect isolated coherent step-like discontinuities produced by cosmic strings present at late times. ... The statistical variable considered is the Sample Mean Difference (SMD) between large neighbouring sectors of CMB maps, separated by straight lines in two dimensional maps and points in one dimensional maps. ...
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Ссылки http://www.mrao.cam.ac.uk/ppeuc/astronomy/papers/perivolaropoulos/perivolaropoulos.html -- 3.9 Кб -- 22.12.2007
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8. Siding Spring Survey
T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...
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Ссылки http://www.mso.anu.edu.au/~rmn/ -- 11.4 Кб -- 23.12.2011
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9. Running processes as background jobs
To run a process in the background as a job and carry on working add an (ampersand) at the end of the command line. ... The shell forks a child process to run the command and displays the job number ( [ n ] ) and the PID (Process IDentifier) number. ... If the command is likely to produce error messages you will need to redirect standard error. ... Do not run an interactive command that requires you to type something at the terminal as a background job. ... You will then have to kill its process . ...
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Ссылки http://comet.sai.msu.ru/UNIXhelp/shell/jobz2.html -- 2.7 Кб -- 17.01.1997
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10. Reduce the background data
Next: Reduce point data Up: Quick Guide Previous: Print form sheets Contents . You should reduce this data of type ``scan'' before anything else. ... Plot the background rate (four channels at a time) versus time. ... Use P ROCESS BG if you want to replace edited scans with an average value from other valid scans in the same channel. ... The reason for reducing the background data first is that average will not average the point data of a scan for which no background data exists. ...
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Ссылки http://www.eso.org/~chummel/oyster/manual/node147.html -- 5.5 Кб -- 28.04.2015
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11. A Year of Resolving Backgrounds
... A Year of Resolving Backgrounds . ... In X-ray light the recently launched spacecraft Chandra and XMM resolved much of the seemingly uniform X-ray background into many discrete sources, many of which appear to be black holes at the centers of galaxies accreting matter. In microwave light , the BOOMERANG and MAXIMA-1 missions resolved with new clarity the seemingly uniform microwave background . ... Publications with keywords: cosmic microwave background radiation . ... Our Dusty Universe . ...
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Ссылки http://www.astronet.ru/db/xware/msg/1164483 -- 14.8 Кб -- 30.12.2000
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12. ASP: Family ASTRO: Resource Lists and Background Reading
Family ASTRO Event Leaders can follow the links below to find a number of resources and more background reading to help them with their Astronomy Events and expand their knowledge on the topics covered in our series of Leader Kits for educators. ... Print and Web Resources on the Night Sky . ... If you have questions about Family ASTRO, see our Frequently Asked Questions for Educators and Astronomers page , or our Frequently Asked Questions for Families and Friends page. ...
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Ссылки http://www.astrosociety.org/edu/family/resources/resources.html -- 7.0 Кб -- 02.10.2012
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13. APOD: 2000 December 30 - A Year of Resolving Backgrounds
... 2000 December 30 . A Year of Resolving Backgrounds . ... Explanation: No matter which direction you look, no matter what type of light you see, the sky glows - but why? ... In microwave light , the BOOMERANG and MAXIMA-1 missions resolved with new clarity the seemingly uniform microwave background . ... Pictured above , a map spanning ten degrees of the microwave sky resolves the microwave background into hot and cold spots, as indicated in micro kelvins . ... About APOD | ...
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Ссылки http://www.sai.msu.su/apod/ap001230.html -- 5.4 Кб -- 01.10.2012
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14. Long description of example illustrating background calculation
. This diagram shows a small table with three transparent cells and illustrates how their final background is determined. The table consists of two rows. Four (labeled) cells lie in the first row, but the second cell spans the first and second row. The first, third, and fourth cells of the second row are "empty". Each non-empty cell has a red background and a double black border. Each empty cell has the table's background color (specified as #ff0) as its own. Return to image.
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Ссылки http://crydee.sai.msu.ru/~vab/html.doc/css2/images/longdesc/tbl-empty-desc.html -- 1.9 Кб -- 02.05.1998
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15. Background
Next: Summary Report Up: Phenology Garden Previous: Phenology Garden Contents . ... The creation of a phenology garden in Armagh, a project still in its infancy, is part of this effort. ... There is a need for such gardens to be close to meteorological stations having long time series of observations for calibration purposes, one of the Armagh Observatory's strengths in the environmental field. ... Armagh. ...
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Ссылки http://star.arm.ac.uk/annrep/annrep2004/node85.html -- 7.1 Кб -- 19.04.2005
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16. Just A Little Background On Dick - an Astronomy Net Exploration Forum Message
Astronomy Discussion Forums . Forums: . ... Discussion Forums . ... Just A Little Background On Dick . Forum List | ... Post Message | ... Posted by Harvey on November 25, 2002 21:07:26 UTC . ... He knows a lot of math, probably more than anyone on this forum. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...
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Ссылки http://www.astronomy.net/forums/exploration/messages/165.shtml -- 13.5 Кб -- 09.04.2016
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17. Keywords_84
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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Ссылки http://www.ipa.nw.ru/PAGE/EDITION/transaction/tbook/84.htm -- 5.2 Кб -- 02.10.2012
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18. Supernovae - Microwave Background - Large-Scale clustering [Архив] - Общая
Общая Астрономическая Конференция > Форумы общей направленности > Любые вопросы от новичков > Supernovae - Microwave Background - Large-Scale clustering . ... Просмотр полной версии : Supernovae - Microwave Background - Large-Scale clustering . ... 03.06.2013, 16:42 . ...
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Ссылки http://www.starlab.ru/archive/index.php/t-25454.html -- 3.1 Кб -- 10.04.2016
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19. WARNING MISSION: Background
Disastrous earthquakes happen 100 to 200 times a year. ... There is a chance that the data of ionospheric plasma observations hold an answer to the latter question. Satellites and ground-based facilities may detect earthquake precursors in the ionosphere a few hours or days before the main shock. ... ULF "Hz"-oscillations have been recorded several hours before the main shock in a narrow magnetic field tube (40...100 km along the satellite trajectory) conjugated with epicenter of the earthquake. ...
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Ссылки http://space.univ.kiev.ua/projects/warning/background.html -- 6.8 Кб -- 15.02.2000
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20. cosmic microwave background | Astronomy.com
... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... Cosmic Adventures . ... cosmic microwave background . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email...
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Ссылки http://www.astronomy.com/tags/cosmic-microwave-background -- 56.5 Кб -- 09.04.2016
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