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1. The AstroStat Slog faint source fluctuations
... People . Posts tagged ?faint source fluctuations? ... They usually know what the biases are, but often tend to mislabel them, especially the Eddington and Malmquist types. ... Tags: bias , detection threshold , Eddington , faint source fluctuations , logN-logS , luminosity function , Malmquist . Category: Astro , Bad AstroStat , Jargon | 3 Comments . ... Entries RSS . Comments RSS . ... General comments . ... vlk on [MADS] Parallel Coordinates . ... Entries (RSS) and Comments (RSS) . ...
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Ссылки http://hea-www.harvard.edu/AstroStat/slog/groundtruth.info/AstroStat/slog/tag/faint-source-fluctuations/index.html -- 19.6 Кб -- 01.03.2014
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2. ALMA Phase Calibration Techniques at the Cavendish Astrophysics Group
ALMA | ... In this section, we explain why we need to correct phase fluctuations and ALMA's strategy to do this. Rapid fluctuations will be corrected with water vapour radiometers (WVRs). The Cavendish Astrophysics Group was also a leading contributor to the ALMA prototype WVRs, which were put through their paces in tests at the Submillimeter Array (SMA). ... The Cavendish Astrophysics Group in partnership with the Onsala Space Observatory built two prototype WVRs for the ALMA project. ...
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Ссылки http://www.mrao.cam.ac.uk/projects/alma/fp6/wvr.html -- 11.0 Кб -- 29.03.2012
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3. 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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4. Результаты научных работ 25
Search of spectral-spatial fluctuations . ... After recombination of hydrogen the one of probable mechanism of formation CMBR fluctuations there can be a scattering by small density inhomogeneities if they have peculiar velocities and opacity for electromagnetic emission. Peculiar velocities of various spatial scale are predicted in all models of evolution. ... For increase the time of accumulation of a signal with our antenna the drift curves near celestial poles were used at declination +89.5 . ...
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Ссылки http://mavr.sao.ru/hq/lrs/res25a.html -- 4.4 Кб -- 09.04.2016
[ Сохраненная копия ] Ссылки http://www.sao.ru/hq/lrs/res25a.html -- 4.4 Кб -- 09.04.2016
[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/lrs/res25a.html -- 4.4 Кб -- 09.04.2016
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[ Сохраненная копия ] Ссылки http://www.sao.ru/hq/lrs/res25a.html -- 4.4 Кб -- 09.04.2016
[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/lrs/res25a.html -- 4.4 Кб -- 09.04.2016
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5. http://www.naic.edu/vscience/schedule/tpfiles/HeilestagA3020tp.pdf
Proposal Identification No.: ... Proposal Type: General Category : Observation Category : Total Time Requested: Minimum Useful Time: Regular Astronomy 61.5 Hours 2.5 hours Prop osal Title: AN UPDATED PROPOSAL TO MEASURE MAGNETIZED ELECTRON DENSITY FLUCTUATIONS IN MIRA-VARIABLE-STAR CORONAE ABSTRACT: We have recently realized a technique for measuring electron density The technique uses the propagation effects on a spacecraft downlink carrier. ...
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Ссылки http://www.naic.edu/vscience/schedule/tpfiles/HeilestagA3020tp.pdf -- 48.4 Кб -- 03.10.2015
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6. Space Research Institute (IKI) Seminar
... Formation of large-scale inhomogeneous magnetic structures in a turbulent convection". ... Magnetic fluctuations generated by a tangling of the mean magnetic field by velocity fluctuations are studied in a developed turbulent convection with large magnetic Reynolds numbers. ... This effect is caused by a negative contribution of the turbulent convection to the effective mean Lorentz force. ... The energy for this instability is supplied by the small-scale turbulent convection. ...
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Ссылки http://www.iki.rssi.ru/galeev/abs_eng/e081125.htm -- 12.6 Кб -- 19.11.2008
[ Сохраненная копия ] Ссылки http://www.cosmos.ru/galeev/abs_eng/e081125.htm -- 12.6 Кб -- 19.11.2008
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[ Сохраненная копия ] Ссылки http://www.cosmos.ru/galeev/abs_eng/e081125.htm -- 12.6 Кб -- 19.11.2008
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7. GSAOI Bulk Motions Science Page
... GSAOI Home . ... Science . ... It is widely accepted that the evolution of the large scale structure of the Universe is driven by dark matter. Understanding this dark matter continues to be one of Astronomy's great unsolved problems. Measuring the bulk motions of galaxies allows us to map the overall mass distribution of the Universe in a way that is independent of the luminous matter in galaxies. ...
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Ссылки http://www.mso.anu.edu.au/gsaoi/science/bulk.shtml -- 6.9 Кб -- 01.10.2012
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8. http://star.arm.ac.uk/highlights/2012/603/bp_mag/VisualAnalysis/091107/091107_01.pdf
... A positive fragment moves towards a negative fragment and magnetic cancellation occurs. ... The fluctuation always relates to magnetic cancellation with the cancellation site always near to major positive polarities, but sometimes only negative fragments move to the site, while at other times both polarities move and joint together. 06:57 07:52 Negative fragments begins to emerge at about 10" away from the positive polarities and they start moving toward the positive polarities. ...
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Ссылки http://star.arm.ac.uk/highlights/2012/603/bp_mag/VisualAnalysis/091107/091107_01.pdf -- 43.2 Кб -- 23.07.2012
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9. M3: Inconstant Star Cluster
... M3: Inconstant Star Cluster . ... Credit Copyright: J. Hartman ( Harvard CfA ) K. Stanek ( Ohio State U. ) Explanation: Star clusters appear constant because photographs of them are frozen in time. In reality, though, cluster stars swarm the center and frequently fluctuate in brightness. ... Most of the variable stars visible above are RR Lyrae stars , stars that can quickly double their brightness while becoming noticeably bluer. ... Publications with keywords: M 3 - globular cluster . ...
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Ссылки http://www.astronet.ru/db/xware/msg/1221578 -- 15.6 Кб -- 15.04.2007
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10. Output Files
. XMM-Newton Science Analysis System . flspec (flspec-3.1) [xmmsas_20080701_1801-8.0.0] . Meta Index / Home Page . spectrumsets : List of output FITS spectral files containing the spectrum of the background fluctuations at different offaxis angles. This is a PPS product called ``EPIC FLUCTUATIONS SPECTRUM''. XMM-Newton SOC/SSC -- 2008-07-02
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Ссылки http://xmm.vilspa.esa.es/sas/8.0.0/doc/flspec/node7.html -- 3.4 Кб -- 02.07.2008
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11. Project 8 - RFBR - Dynamical and non-equilibrium electron transport and
... Theoretical investigation was carried out of electron transport phenomena in superconducting heterostructures S-MB-N and S-MB-S with magnetic barriers (MB) determined by monolayer of ferromagnet (F) or spin-valve structures FNF or FIF (N is a normal metal, I is insulating layer). ... The I-V characteristics of cuprate bicrystal Josephson junctions have been experimentally investigated at different temperatures, barrier transparency factors and the phase difference of superconducting electrodes. ...
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Ссылки http://www.cplire.ru/html/oxide233/proj8.html -- 4.7 Кб -- 01.09.2005
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12. http://www.stsci.edu/ftp/stsci/library/abstracts/1148.abs
documentstyle{preprint} \begin{document} \title{TEMPERATURE FLUCTUATIONS AND STARBURST EVOLUTION} \author{Enrique P\'erez\/\thanks{Permanent address: Instituto de Astrof\'{\i}soca de Andaluc\'{\i}a (CSIC), Aptdo.~ ... We show that large temperature fluctuations arise naturally when the spectral energy distribution of the ionizing cluster hardens during the Wolf-Rayet phase. \end{abstract} \end{document} ...
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Ссылки http://www.stsci.edu/ftp/stsci/library/abstracts/1148.abs -- 2.1 Кб -- 16.05.1997
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13. Kholtygin, Astrophysics (2000)
A.F.Kholtygin . Emission of the inhomogeneous plasma: line intensities and element abundances in the gaseous nebulae with T e and n e fluctuations, Astrophysics , 43 , 627-640 (2002) . ... We calculate radial and vertical abundance gradients of C, N, O, Ne, Ar, Cl and S depending of different ages of the central star of the nebula. It have been founded statistically significant dependence of abundance gradients with the age of central star. ...
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Ссылки http://www.astro.spbu.ru/staff/afk/Papers/2000/EmUnHomPl2000abstr.html -- 2.3 Кб -- 19.11.2010
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14. Annotation_34
... Studies of the pathlength fluctuations through the troposphere using geostationary satellite. ... Relationships that connect the temporal structure function of fluctuations measured with the temporal spatial structure functions of pathlength through the troposphere were obtained. ... On the base of experimental data there were determined the parameters of temporal structure function of pathlength through the troposphere (exponent, structure coefficient). ...
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Ссылки http://www.ipa.nw.ru/PAGE/EDITION/preprint_ann/34.htm -- 3.5 Кб -- 01.10.2012
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15. http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B86287395-077B-4D5C-ACAC-8A1C8FE1A830%7D
This image displays a portion of the South Pole Telescope survey of the cosmic microwave background (CMB) - the radiant light left over from the Big Bang. ... The variations in the image are minute fluctuations in the intensity of the CMB. The fluctuations are caused by differences in the distribution of matter in the early universe at a time only 400,000 years after the Big Bang. The image is effectively a "baby picture" of the universe. ...
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Ссылки http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B86287395-077B-4D5C-ACAC-8A1C8FE1A830%7D -- 3.9 Кб -- 10.04.2016
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- http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BEBDFA19E-86D0-4AEA-BD55-31A084FA1559%7D
- http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B6463E80E-97A8-459B-A4FF-536917BEC87B%7D
- http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BAA2BF042-82E2-49BD-B02D-2C23657E1381%7D
16. LPCBC: Abstract 2_8
... Effect of vortex fluctuations on 205 Tl spin-lattice relaxation in the mixed state of Tl 2 Ba 2 CuO 6 . ... The spin-lattice relaxation rate W on 205 Tl has been measured in the mixed state of a Tl 2 Ba 2 CuO 6 aligned powder sample with T c =100 K. At T < 25 K, W T and decreases with increasing magnetic field. This behavior is explained as caused by fluctuations of pancake vortices; the latter induce a time dependent random magnetic field which causes the relaxation of nuclear spins. ...
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Ссылки http://www.issp.ac.ru/lpcbc/ABST/2_8.html -- 2.3 Кб -- 24.12.1999
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17. Data gathering
... Measurements of fluctuations of the streamwise and vertical components of wind velocity were performed by two-component sonic anemometer of continuous radiation with capacitor microphones. Measurements of temperature fluctuations were performed with the aid of resistance thermometer. ... Average wind velocity at the 5 meters height was about 5 m/s. With the aid of multichannel registrator the simultaneous recordings of pulsations of temperature and velocity components were made. ...
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Ссылки http://www.sai.msu.su/~er/mf2.html -- 3.1 Кб -- 01.10.2012
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18. 2dF QSO Redshift Survey (2QZ)
The 2dF QSO Redshift Survey (2QZ) . ... Before jumping into all the finer details of teh survey, a brief non-astronomer's guide to redshift surveys is available. ... The primary scientific aims of the QSO survey are: (1) to obtain the primordial fluctuation power spectrum out to COBE scales, (2) to determine the rate of QSO clustering evolution in the non-linear and linear regimes and hence obtain new limits on the value of and the bias parameter, (3) to apply a powerful geometric method to measure . ...
19. Pc 3 [Oulu]
SpaceWeb@SkyNet.oulu.fi - last update: 25 July 1997, 1200 UT (RR) . Compressional Pc 3 are daytime, relatively low amplitude (a few nT) fluctuations of field amplitude with typical periods of 20-30 s ( ULF range). ... The correlations with the IMF cone angle suggest that the source population of waves is associated with the quasi-parallel region of the bow shock (the magnetopause is exposed to quasi-parallel region of the shock only for sufficiently radial IMF). ... Space Physics Text Book of Oulu ...
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Ссылки http://www.iki.rssi.ru/magbase/REFMAN/SPPHTEXT/pc3.html -- 5.8 Кб -- 15.10.1997
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20. http://www.atnf.csiro.au/research/masermeeting/web_papers/309_Goss.pdf
Intrinsic Short Term Variability in W3-OH and W49N Hydroxyl Masers W.M. Goss National Radio Astronomy Observatory Socorro , New Mexico, USA A.A. Deshpande, Raman Research Institute Bangalore India R. Ramachandran , San Jose CA, USA The method-W3 OH · Use the VLBA with a beam of 5 mas and a velocity resolution of 0.1 km/s. Only simple sources are analyzed. ie no confusion from multiple components within the 2 arc sec maser region. ... About 400 or so time samples. ... Zeeman pairs at 1612 and 1720 MHz. ...
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Ссылки http://www.atnf.csiro.au/research/masermeeting/web_papers/309_Goss.pdf -- 103.5 Кб -- 26.04.2007
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