... 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. ...

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Next: Limiting Energy Channels Input Up: *fit* - Fit Data Previous: Raymond Model . The model is a two-temperature Raymond thermal spectrum, low temperature range is 0.55 to 0.65 keV, high temperature range is 1 to 2 keV, element abundance table is cosmic, abundance of heavy elements (atomic number >2 ) is 50% of the value in the table. Note that 0.7 = log(5.0), specifies that the second component normalization will be 5 times the normalization of the first component. ...

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• Model Spectra for Spectral-Fitting Program
• The AstroStat Slog education
• The AstroStat Slog Blog Archive my first AAS. VI. Normalization

... we show that the comparison between the calculated and observed numbers of the most ``fragile'' (from the point of view of the binary evolution scenario )   galactic binary types (such as X-ray low-mass X-ray binaries (LMXB), cataclysmic variables (CV),   Be-stars   with compact companions, relative number of visible binary radiopulsars   with normal and compact secondary components) impose certain constraints on the feasible initial ... Phenomenological Kick Velocity . ...

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• Initial Distributions of Binary Parameters
• Normal star evolution
• The Radiopulsar PSRB1259-63 - a Probe in the Stellar Wind Plasma

... We cannot use for this purpose equivalent widths and profiles of HI lines (well known criteria of atmospheric conditions for normal supergiants), since these lines are strongly distorted in the spectrum of IRAS04296 as seen in Fig. ... Figure: Upper: iron abundance FeI (circles) and FeII (crosses) calculated for IRAS04296+3429 with model parameters , and using lines with different excitation potentials EP of a low level; bottom: the same as a function of the equivalent width W . ...

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• harak_e
• The spectrograph design and the observing procedure
• comedi_get_cmd_src_mask

Plans are under way to create a new way of performing non-interactive observations which will be called auto-observing . ... Non-interactive observing with CIMA has for a long time been available with the use of CIMA command files. Contrary to normal command file observing which requires a command file with a set of commands to be executed sequentially, auto-observing will use a list of sources and a list of instructions on how to observe each of the sources. ...

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• The Mock Spectrometer
• INTRODUCTION to Spectral Line Observing at AO
• AGES Observing Guide

... HK file type: PeriodicHousekeeping [22 parameters ] ---------------------------------- FILTER_WHEEL string [E1257] FILTER_WHEEL_POSITION Uint16 [E1317] FILTER Uint16 [E1317] This parameter is translated as follows : Translator's name: EMOS1 Filter 0 = Closed 247 = CalThin1 267 = Thin1 514 = CalThin2 534 = Thin2 781 = CalMedium 801 = Medium 1047 ...

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• Parameters

... SFIT is a general-purpose code designed to optimize theoretical stellar spectra to an observed spectrum. ... While the programme expects input from "stdio", it is more natural to save commands in a file (eg "sfit_input") and run the code simply by . ... If the spectra to be fitted have a filename "star_spectrum", then the best fit spectrum will be written out, together with the renormalized input spectrum, to a file called "star_spectrum.fit". ... sets up model spectrum grid (and for 2nd star) . ...

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• SFIT2 - Command Syntax
• SCL Sfit SLV Commands
• FFIT - Command Syntax

WCSLIB љ 5.15 . ... tabprm Struct Reference . ... intљ . ... double *љ . ... Given or returned) Pointer to the first element of a vector of length tabprm::M whose elements record the lengths of the axes of the coordinate array and of each indexing vector. ... Returned ) Pointer to the first element of a vector of length tabprm::M of interpolated indices into the coordinate array such that , as defined in Paper III, is equal to (p0[m] + 1) + tabprm::delta [m]. double * tabprm::delta . ...

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• casacore: casa::Normal Class Reference
• uvfit
• OPSLEWTI

Do we need various assumptions to get a good FCN? A new multiple layer spectral method Cheng-li HuangMian Zhang Shanghai Astron. ... No FCN ! ... FCN,FCN,FCN.. Multiple layer spectral method (MLSM) + Linear Operator Method (LOM) Finite Element Method (FEM) · · Traditional approach solves one order ellipsoid only. ... Main Idea of FEM Boundary Surface could be described as: Let's consider how to solve the dynamic equation: Traditional Approach: Equivalent Spherical Domain . ...

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• Pulkovo NEO Page: Ephemeris Support

... The planning and reduction programs are distributed with array sizes set large enough to let most observers work without difficulty. However, you might need to reduce a very large data set, or to deal with a very large number of passbands (9 is the nominal limit). ... The main problem is holding the matrix of normal equations during the iterations; on the other hand, star catalogs can be made quite large without paying much of a price in terms of performance. ...

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• HyperLEDA documentation: parameter: objname
• Normalization and Fitting
• First results from follow-up spectroscopy with the NOT

The problem of solar wind data correlation for the observations onboard several spacecraft is very important for three points of view: . ... This problem is studied now in detail by systematic determination of ion flux and ion velocity data correlations by INTERBALL-1 (IKI group), WIND and IMP 8 (both - MIT group). ... Solar wind plasma correlation lengths from IMP 8, WIND and INTERBALL-1. ... Correlation of solar wind observations onboard several spacecraft: INTERBALL-1, IMP 8 and WIND data. ...

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• Space Research Institute (IKI) Seminar

FGS Instrument Handbook for Cycle 24 . ... Fine Guidance Sensor Instrument Handbook for Cycle 24 > Chapter 7: FGS AstrometryData Processing > 7.4 Epoch-Level Processing . ... 7.4.1 Parallax, Proper Motion, and Reflex Motion . 7.4.2 Binary Stars and Orbital Elements . ... This is true whether the goal is to determine the parallax, proper motion, or reflex motion of an object measured in Position mode, or the orbital elements of a binary system observed in Transfer mode. ...

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• Footnotes
• Prescription Retrieval
• Index

... There is an opportunity to perform O-C calculations for objects which are absent in the data base of the package. Such objects can be described by orbital elements or by initial coordinates and velocities. ... On pressing Edit file button user has a possibility to look through the list of object elements or their coordinates and velocities to add or to change it. ... For example, the designations of objects in the list can occupy the last position in each line. ...

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• ENGAMPLE

External influences on spin parameters for INTERBALL - AP . ... The main interest is that almost all kind of external influences to parameters of motion (eclipse, normalization, ROS) are presented in the one time interval. Three upper panels illustrate the spin velocity, the angle between kinetic moment and sun direction, and the nutation.All external events are represented on the lowest panel as blue, green and yellow columns. ...

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• Concerning Steady State Corotation of the Io Plasma Torus

... Because the DMR instrument is differential and every pixel is multiply sampled, sky maps are produced by solving a coupled system of linear equations (the normal equations) to minimize a chi-squared. ... This is reflected in the algebraic form of the normal equations matrix, so that, if one were to diagonalize the matrix, one would find a single eigenvector whose eigenvalue was identically zero, and the associated eigenvector, viewed as a sky map, would have a constant value. ...

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• New Elements of Sherpa, CIAO's Modeling and Fitting Tool
• Using Massively Parallel Processing of a NLTE Spectrum Synthetic Code and an
• Bias-Free Parameter Estimation with Few Counts, by Iterative Chi-Squared

... In laboratory the design and a manufacturing techniques mirror aspherical optics are developed ("fokon", ellipsoid, aspherical mirror).Such optical elements are made of widespread aluminium alloys on the standard equipment without use diamond turning. ... Using: optical blocks of not image optical devices for transitions, collimation, focus (concentration) radiations in a wide spectral range from UV to IR. Focusing and collimation of light; . ... circle aperture/ring aperture; . ... Back Forward . ...

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... astro-ph . ... Whitespace-separated words are treated as AND ed. Show 10 50 100 articles per page in Full Compact mode . ... Quasar Variability in the Framework of Poissonian Models . ... It is shown that in this very general framework the well established anti-correlation between variability amplitude and wavelength can only be understood as an effect of an underlying spectral component which remains stable on long time-scales, and is redder than the variable component. ...

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... Peter B. Mozhaev , Ph.D. Complicated crystal structure and anisotropy of physical properties of the high critical temperature superconductors (HTSC) makes difficult reproducible fabrication of the multilayered epitaxial heterostructures of HTSC with necessary parameters. ... The goal of this project is study of growth and formation of the multilayer epitaxial heterostructures of HTSC of the ReBa 2 Cu 3 O x family (ReBCO, where Re is the rare earth element). ...

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• Atmospheric influence on the different radioengineering systems functioning.
• Lab234 - Development, study and optimization of the superconducting phase
• Project 1 - SfP - Ovsyannikov, Supersensitive high-Tc superconducting

... A file upload element on an HTML form. ... JavaScript 1.1: added type property . ... The HTML INPUT tag, with "file" as the value of the TYPE attribute. For a given form, the JavaScript runtime engine creates appropriate FileUpload objects and puts these objects in the elements array of the corresponding Form object. ... form . ... For all FileUpload objects, the value of the type property is "file" . ... Use the value property to obtain the file name that the user typed into a FileUpload object. ...

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• http://www.arcetri.astro.it/irlab/doc/library/javascript/clientreference/submit.htm
• Mechanics and Cryogenics
• Cannibal Stars Cause Giant Explosions in Fornax Cluster Galaxy (ESO Press

Main Page Data Structures File List Data Fields Globals . ... Go to the source code of this file. struct . ... Data for OI_ARRAY FITS table. ... write_oi_array (fitsfile *fptr, oi_array array, int extver, int *status) . ... Data for OI_ARRAY FITS table. typedef struct _target target . ... Data for OI_TARGET FITS table. typedef struct _oi_wavelength oi_wavelength . Data for OI_WAVELENGTH FITS table. typedef struct _oi_vis_record oi_vis_record . ... fptr , . ... array data struct, see exchange.h . ...

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• Command line interface to libAIR and water vapour column retrieval Bojan
• Possible manifestation of the gravitational lensing effect in single pulsar
• Astrophysics Group CosmoNet Downloads