XMM-Newton Science Analysis System . ... Meta Index / Home Page / Algorithm . Set state of internal RMF data server. Various actions include: . Setting the CAL state to the default CCD chip and mode (Full Frame) for the instrument in question. Open input counts spectrum file and determine channel range in o/p matrix from the TLMIN and TLMAX attributes for the channel column. ... If pile-up is requested, input photon spectrum file for input. ... XMM-Newton SOC/SSC -- 2006-06-28 ...

Еще в разделе: (Показать все результаты (>35444) - xmm.vilspa.esa.es/ )

• Parameters
• Source Position

Next: Star Formation Rate and Up: No Title Previous: Calculation of Evolutionary Tracks . To start calculations, we choose the distributions of the initial binary parameters: the mass of the primary ZAMS component, , binary mass ratio, , orbital separation a . ... whereas the mass ratio distribution is not. ... The zero assumption often made is that the mass ratio distribution has a flat shape, that is binaries with a high mass ratio occur as frequently as those with equal masses. ...

Еще в разделе: (Показать все результаты (>601) - xray.sai.msu.ru/ )

• Dependence on the Scenario Parameters and Initial Distributions
• Initial binary parameters
• Parameters of binary compact star evolution

... We demonstrate through numerical simulations that model parameters estimated with our technique are essentially bias-free, even when the average number of counts per bin is 1. ... The IW technique avoids such biases by estimating through successive iterations, where for each iteration, j, , and the best-fit parameters are determined by minimization of . ... In our sample, we find that the minimum values and best-fit parameters converge after about 6 iterations. ...

Еще в разделе: (Показать все результаты (>1997) - www.adass.org/ )

• Recent Advances in Parameter Estimation in Astronomy with Poisson-Distributed
• An Extragalactic Point Source Simulator for SIRTF Pipeline Testing
• ETCs and Observations Simulation at the VLT

... 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 (>4245) - hea-www.harvard.edu/ )

• The AstroStat Slog Blog Archive [ArXiv] Recent bayesian studies from astro-ph
• The AstroStat Slog Blog Archive chi-square distribution [Eqn]
• Structure of the Spectral Package

... In brief: the frequency-dependent radiative transfer equation is solved for a dust under assumption of spherically-symmetric geometry for its distribution taking into account particle size distribution and quantum heating effects for the very small dust particles. ... Table: Model parameters for IRAS04296+3429. ... parameter . ... hot dust shell) . ... The best fit to the spectral energy distribution of IRAS04296 is shown by heavy solid line (see Table2 for details concerning parameters of the model...

Еще в разделе: (Показать все результаты (>1042) - jet.sao.ru/ )

• Determination of atmospheric parameters and calculation of chemical composition

COS Instrument Handbook for Cycle 24 . ... exposure time . ... overhead times . ... airglow - see background rates . ... apertures 1 , 2 . ... BOA - see apertures, BOA . ... calibration accuracies . calibration observations . ... Cycle 17 calibration observations 1 , 2 . ... detector non-linear effects - see dead time . ... Exposure Time Calculator - see ETC . ... FCA - see apertures, FCA . ... grating parameters . ... PSA - see apertures, PSA . ... spectroscopic modes - see grating parameters . ...

Еще в разделе: (Показать все результаты (>21717) - www.stsci.edu/ )

• HST Data Handbook Contents 2
• How precise are the parameters of my double star as measured in Transfer Mode?
• Model Fitting

... The instrument modes and arms should be indicated and described, and the keywords that distinguish between different modes should be indicated (usually INS.MODE is used if it is a mode and OCS keys are used in case it is related to an arm). ... Raw frames The format of the raw frames for each mode and arm should be described. ... The design should be checked on pre-processing or processing, which involves products only (no trigger via raw frames). ... QC parameters. ...

Еще в разделе: (Показать все результаты (>66886) - www.eso.org/ )

• Sample Properties
• HAWK-I Exposure Time Calculator
• VLTI Calibrator Selection Help Page

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 (>76) - space.univ.kiev.ua/ )

• ION AND ELECTRON ENERGY DETECTOR PAN-2
• Extragalactic Astronomy
• Theoretical Astrophysics

... There are compelling reasons for the pulsar community to utilise a standard data storage format. For example, standardisation of file formats significantly decreases the amount of effort required to integrate new instruments into the analysis chain. ... Accordingly, we have defined PSRFITS as a standard FITS-based format for pulsar data files. ... For example, the first line of Processing History HDU contains information about the data acquisition program and the initial structure of the file. ...

Еще в разделе: (Показать все результаты (>26388) - www.atnf.csiro.au/ )

• casacore: casa::Weibull Class Reference
• casacore: casa::Poisson Class Reference
• casacore: casa::Uniform Class Reference

... Fitting the observed dependence includes calculations of the polarization cross-sections averaged over particles orientation and size distribution, their normalization and the comparison of obtained dependencies with Serkowski's curve representing observational data for a chosen star. ... Variations of the polarization factors with wavelength are shown in Fig. 16 for homogeneous spheroidal particles with PF orientation. ... The distinction between prolate and oblate spheroids is also clearly seen. ...

Еще в разделе: (Показать все результаты (>347) - www.astro.spbu.ru/ )

• Polarization properties (transmitted radiation)
• Database of Optical Properties -- Level: subpage

. This Directory contains Model of distribution of density, temperature and effective collision freguency of electrons. Yu.K.Chasovitin. 1998. This Directory contains The program RIM98 for calculating the parameters of the ionosphere to use the "Reference Ionospheric Model-98" (RIM-98).Yu.K.Chasovitin. 1998.

Еще в разделе: (Показать все результаты (>387) - www.wdcb.ru/ )

• "STP Data" STP Data
• Catalogue 5 of WDC-B