... Up: Data Analysis Applications . ... Our main goals are: 1) to take advantage of the full capabilities of the AXAF, we intend to provide a more sophisticated modeling capability (i.e., models that are f ( x , y , E , t ), models to simulate the response of AXAF instruments, and models that enable ``joint-mode'' fitting, i.e., combined spatial-spectral or spectral-temporal fitting); and 2) to provide users with a wide variety of models, optimization methods, and fit statistics. ... Multiple data sets...

Еще в разделе: (Показать все результаты (>2002) - www.adass.org/ )

• ADASS 2003 Conference Proceedings
• Calibration and Performance Control for the VLT Instrumentation
• A New Entropy Measure Based on Multiple Resolution and Noise Modeling

... Fitting and Modeling of AXAF Data with the ASC Fitting Application S. Doe, M. Ljungberg, A. Siemiginowska and W. Joye AXAF Science Center, MS 81, Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138 USA Abstract. ... Fitting and Modeling of AXAF Data 159 MODEL MANAGER FIT STATISTIC MANAGER MANAGER SRC BKGD INSTR MODEL = SRC + BKGD * INSTR MODELS MODELS MODELS MANAGER MANAGER STATS METHODS OPTIMIZATION METHOD MANAGER Figure 3. The Model, Method, and Statistic Managers. ...

Еще в разделе: (Показать все результаты (>290) - www.stecf.org/ )

... The x-ray spectral analysis consists of a comparison between the observed pulse height spectrum and a pulse height spectrum calculated using a given spectral model. ... To obtain the spectral parameters for an x-ray source, several steps need to be followed. For each source: . ... obtain the best fit parameters for a spectral model - repeated for each model of interest . obtain a 1-D or 2-D grid of values around the best fit values - this can be done for as many models as desired . ...

Еще в разделе: (Показать все результаты (>4281) - hea-www.harvard.edu/ )

• Model Spectra for Spectral-Fitting Program
• Structure of the Spectral Package
• Jonathan's ASC documents

... CentralProcessor 0.11 documentation . Calibration and Imaging Documentation . The cmodel pipeline task is responsible for extracting a local sky model (LSM) from the global sky model (GSM) and building an image from the components and/or images resulting from the request. ... MPI wrapper> cmodel -c config.in . ... None . ... If Cmodel.gsm.database is set to asciitable then a row/column (space separated) file is used as the global sky model source. ... cmodel (Model Image Generator) . ...

Еще в разделе: (Показать все результаты (>18338) - www.atnf.csiro.au/ )

• Miriad's Calibration Model
• Multi-Plane Models
• ccontsubtract CentralProcessor 0.11 documentation

... 3.2 CTI correction In CCDs part of the charge released by an absorbed photon is lost during transfer to the readout node. This loss depends on several parameters, in particular on the position where the photon was detected, its energy, the temperature of the CCD, and the saturation of traps by charges preceding along the readout direction. ... The model accounts for the e ects of incomplete charge collection close to the detector surface. ...

Еще в разделе: (Показать все результаты (>34635) - xmm.vilspa.esa.es/ )

• http://xmm.vilspa.esa.es/sas/7.0.0/doc/calpnalgo.ps.gz
• http://xmm.vilspa.esa.es/sas/8.0.0/doc/calpnalgo.ps.gz
• http://xmm.vilspa.esa.es/sas/6.5.0/doc/calpnalgo.ps.gz

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... Although their determination is based on the scattering process model, independent check-ups by rocket experiments have shown their correctness in experimental applications. ... Ionospheric data analysis, especially during strong disturbances, cannot be without some other kinds of diagnostic tools. ... The lack of data has always been a challange in this case. ...

Еще в разделе: (Показать все результаты (>29) - rp.iszf.irk.ru/ )

... HST . ... Lensing Models . ... In order to interpret many of the properties of background lensed galaxies, reliable models of the lensing maps for each cluster are required. Preliminary models for each of the six Frontier Fields clusters have been provided by five independent groups prior to the HST Frontier Fields observing campaign in order to facilitate rapid analysis of the FF data by all members of the community. ... The various groups model the cluster mass distribution in different ways. ...

Еще в разделе: (Показать все результаты (>20243) - www.stsci.edu/ )

• Model Fitting
• Prescription-Based Optical Modeling
• Software Tools

... Bojan Nikolic web pages home . ... As an exercise to put through the new InMin library through its paces, I have looked recently at applying Nested Sampling ( Skilling2006 ) algorithm to the fitting of star-formation history as function of redshift. ... The data I used are from Figure 1 of Yuksel08 but I use only the grey data paints, which are just the data originally from Hopkins2006 . ... The next step is to define the function which is the model for the history of the SFR density. ...

Еще в разделе: (Показать все результаты (>5021) - www.mrao.cam.ac.uk/ )

• Inference of Coefficients for Use in Phase Correction Bojan Nikolic web pages
• Bojan Nikolic -- Fitting and Comparison of Models of Radio Spectra
• Paper I: Method Bojan Nikolic web pages (r. 329)

Next: Order Merging Up: Instrument Response Correction Previous: Using a Standard . ... It consists of a correction for the blaze function by using a suitable model of the blaze effect introduced by the echelle grating. ... This method uses the overlapping region of adjacent orders to estimate, in a few iterations, the parameter k of the blaze function which is, as before, assumed to be a sinc square. ... The method minimises the difference of the corrected orders in each of the overlapping intervals. ...

Еще в разделе: (Показать все результаты (>2679) - www.sao.ru/ )

• Parameter estimation
• Fourier analysis: The sine model
• Extinction and transformation models

Next: Initial binary parameters Up: Population synthesis of Previous: Introduction . Monte-Carlo method for statistical simulation of binary evolution was originally proposed by Kornilov & Lipunov (1983a,b) for massive binaries and developed later by Lipunov & Postnov (1987) for low-massive binaries. ... Recently Leitherer & Heckman (1995) have modelled star formation for elliptical and spiral galaxies, taking into consideration only the single stars. ... Initial binary parameters . ...

Еще в разделе: (Показать все результаты (>698) - xray.sai.msu.ru/ )

• Initial binary parameters
• Parameters of the starburst
• The Effect of Relativistic Wind on Accretion Flow Parameters

Static Fourier spectrometers are often used for spectral measurements of the ionosphere emissions. There are two main advantages of Fourier spectrometers (FS) - large geometric factor and high spectral resolution; these parameters are two orders better than for grating spectral instruments. ... In scanning Fourier spectrometer optical and electric modulation of signal is used to avoid this problem, for static Fourier spectrometer there are no such ways. ...

Еще в разделе: (Показать все результаты (>98) - space.univ.kiev.ua/ )

• Satellite Data Processing
• Laboratory static Fourier-spectrometer
• Theoretical Astrophysics

Next: Stellar models Up: Introduction Previous: Photometry Contents . In a hierarchical stellar system, the separation between two neighboring stars is always much smaller than the separation of this pair from the next companion in the system, be it another pair or a single star. ... They are also numerically easier to handle than non-hierarchical systems, since each pair can be described with the standard orbital parameters, and each star with a small number of physical parameters. ... System . ...

Еще в разделе: (Показать все результаты (>66802) - www.eso.org/ )

• Data Quality Control and Instrument Modeling
• ESO - ESO sky correction tools
• VLTI Calibrator Selection Help Page

... Basic Observables: Zero-differenced phase and code ionosphere-free combinations of global GNSS network stations, corrected by P1-C1 satellite code biases (cc2noncc), daily observations with 30 seconds sampling rate Sites coordinates : IGb08 reference frame coordinates and velocities Displacements: solid tides, ocean loading, pole tide loading (IERS 2010) Geometric model : Receivers antennas eccentricities, absolute receiver and ...

Еще в разделе: (Показать все результаты (>362) - www.gao.spb.ru/ )

• http://www.gao.spb.ru/english/as/j2014/presentations/mosenkov.pdf
• http://www.gao.spb.ru/english/as/j2014/presentations/filippova.pdf
• http://www.gao.spb.ru/english/personal/malkin/publ/zm12e.pdf

... 8, ``Celestial Mechanics'', 2002 Parameterization of the Solar Radiation Pressure model for GPS satellites I. S. Gayazov Institute of Applied Astronomy, St. Petersburg, Russia The treatment of solar radiation pressure (SRP) effect until now is the main problem in precise modeling of GPS satellite orbits. ... In practice, however, all seven parameters of the empirical model cannot be confidently determined from phase observations. ... Bar­Sever Y. E. A new model for GPS yaw attitude. ...

Еще в разделе: (Показать все результаты (>711) - www.ipa.nw.ru/ )

• LAB Ephem. Astronomy-ERA
• Keywords_139
• Keywords_99

... Research . ... Laboratory . ... The software developed in the laboratory allows to carry out the whole cycle of the satellite information processing: the initial treatment of the data, coordinate relation, topside ionogram deduction, Ne(h) profiles calculation, global mapping the ionospheric parameters, ionospheric modeling and investigations of the mechanisms of the ionospheric parameters variations with local time, season, magnetic activity level, longitude, latitude, and altitude. ...

Еще в разделе: (Показать все результаты (>675) - www.izmiran.rssi.ru/ )

• Empirical Model of the Nighttime Winter Ionospheric Trough

Bigbang Forum Message . Forums: . ... Discussion Forums | ... The Ekpyrotic [string] Models And The Standard Guth Model. Forum List | ... Post Message | ... Could you outline the differences between the Ekpyrotic [string] models and the standard Guth model? ... 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" . ...

Еще в разделе: (Показать все результаты (>1681) - www.astronomy.net/ )

• Manual For Telestar By Meade Model #114az - an Astronomy Net Meade Equipment
• Quicksand As Black Hole Model? - an Astronomy Net Blackholes Forum Message
• New 3D Model Of Solar System And Night Sky - an Astronomy Net Software Forum

THE PARAMETERS INVOLVED IN HAPKE'S MODEL FOR ESTIMATION OF THE COMPOSITION OF THE EJECTA LUNAR TERRAINS. ... In the previous papers we were estimated the surface roughness of the ejecta lunar terrains by means comparison of the local phase function and the average integrated lunar indicatrix. ... The Hapke's theoretical model of the lunar surface reflection. ... For THE PARAMETERS INVOLVED IN HAPKE'S MODEL: S.G. Pugacheva, V.V. Shevchenko a low-albedo lunar surface parameter Bo = 1. ...

Еще в разделе: (Показать все результаты (>127) - selena.sai.msu.ru/ )

• Svetlana G. Pugacheva
• Родионова Жанна Федоровна

... Chapter 15. 15.0 Introduction Modeling of Data Given a set of observations, one often wants to condense and summarize the data by fitting it to a "model" that depends on adjustable parameters. Sometimes the model is simply a convenient class of functions, such as polynomials or Gaussians, and the fit supplies the appropriate coefficients. ... The parameters of the model are then adjusted to achieve a minimum in the merit function, yielding best-fit parameters. ... Data are generally not exact. ...

Еще в разделе: (Показать все результаты (>8073) - www.arcetri.astro.it/ )

• http://www.arcetri.astro.it/irlab/doc/library/nr/f15-0.pdf
• mod_ext_filter - Apache HTTP Server
• Arcetri Correlation Spectrometer

lte-codes . Sterne . ... In 2006, Behara and Jeffery introduced a new file format for the model atmospheres produced by STERNE and used by SPECTRUM and SFIT. ... allow depth-dependent descriptions of composition, and . ... model.lambda_ref <lambda ref > . ... abundance < elem > < abund > . ... structure.abundance < elem > : ( needs N depth ) . ab elem,1 , ab elem,2 , ..., ab elem,Ndepth > . ... structure.tau_ref : ( needs N depth ) . ... structure.opac_ref : ( needs N depth ) . ...

Еще в разделе: (Показать все результаты (>2738) - star.arm.ac.uk/ )

• Sfit Control Language: Classified Listing
• FFIT - Command Syntax
• sfit help file

... FTP access the basic models is here . ... Below, we put short descriptions of the used SED models for the photometric redshifts providing by the current server . ... The uniqueness of this model consists in expanding to the near IR (NIR) of Rocca-Volmerange and Guiderdoni's (1988) atlas of synthetic spectra with a revised stellar library, which includes parameters of cool stars. ... Homepage of the GISSEL model). ... Another model used earlier is the model of synthetic spectra of Poggianti (1997). ...

Еще в разделе: (Показать все результаты (>140) - sed.sao.ru/ )