... 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) . ...

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. ...

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. ...

... V and B magnitudes for A0620-00 for dates when there is B-V data #B.C.S. Robertson , P.R.Warren and R.A. Bywater #Information bulletin on variable stars Number 1173 # #translated to LF by G.V.Lipunova #1=J.D.hel 2=B, mag 3= B-V , mag 4=V, mag 5=V,formal B scatter, mag #6=V,LF 7=V-scatter,LF 8=B,LF 9=B-scatter,LF # 1 2 3 4 5 6 7 8 9 647.66 11.39 .17 11.22 .02 -9.97861 0.008 -9.76477 0.008 648.62 11.38 .16 11.22 .02 -9.97861 ...

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 . ...

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. ...

... 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. ...

... 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. ...

... 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. ...

... 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 . ...

. 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

... 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. ...

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} ...

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. ...

... 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). ...

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 . ...