ASC-FITS-2.0.1: ASC FITS File Designers' Guide (Rots and McDowell) (1999 Jun) . ASC-FITS-REGION-1.0: FITS region document (McDowell and Rots) (1998 Mar) . ... CXC-DM-001 Introduction: Data Analysis with the Chandra Data Model (2001 Oct) . ... 1998 Feb 26: SDS-1.0: Data Product List: obsolete . ... 1998 Mar 09: SDS-10.0: (ASC-FITS-REGION-1.0) FITS region document: see ASC-FITS-REGION-1.0 . 1998 Feb 09: SDS-11.0: FITS function document (superseded by ASC-FITS-FUNCTION-1.2) . ...

... The magnetic field of the Earth has been investigated by satellites for several decades now, and enough of it is known to model its average strength and shape during different levels of overall magnetic activity. Presently the most used empirical global magnetic field models are the Tsyganenko models (1987, 1989) , referred to as T87 and T89, respectively, although even these consist of several submodels. ... Earth's magnetic field from T89c model during Kp=2 for different seasons. ... Res. ...

The Earth's magnetosphere global structure is conditioned by the interaction of the Solar wind and Earth's magnetic field. ... Many various magnetospheric models are available in the NSSDC . ... Fairfield D. H., Average and unusual location of the Earth's magnetopause and bow shock, J. Geophys. ... Stasiewicz K., Polar Cusp Topology and Position as a Function of Interplanetary Magnetic Field and Magnetic Activity: Comparison of a Model with Viking and other Observations, J. Geophys. ...

... Bojan Nikolic web pages home . Next: Fitting of models of radio spectra --.. ... I describe an approach to fitting and comparison of radio spectra based . on Bayesian analysis and realised using a new implementation of the . ... used maximum-likelihood fitting of radio spectra by allowing objective . ... implementation details of the computer code. ... overall approach described here may also be useful for analysis of other . ... Copyright 2012, Bojan Nikolic feedback welcome ...

... Previous: Algorithms . ... On Fractal Modeling in Astrophysics: The Effect of Lacunarity on the Convergence of Algorithms for Scaling Exponents. ... Using Massively Parallel Processing of a NLTE Spectrum Synthetic Code and an Automated Comparison with Observations to Determine the Properties of Type Ia Supernovae from their Late Time Spectra. ... Copyright 1997 Astronomical Society of the Pacific , 390 Ashton Avenue, San Francisco, California 94112, USA . ...

... Modelling is the only feasible way of assessing the reliability of the reconstructions. Modelling here refers to the model used to generate a simulated data set, not the implicit modelling performed by the deconvolution algorithms.) ... Model-fit for parameters to the original data if possible. Check that simulated observations can recover the significant features of the model reliably. ... Use simulated observations to determine the effective resolution of the deconvolution sky model. ...

Next: C.S. Jeffery Up: J.G. Doyle Previous: Magnetic Reconnection Contents . We present, for the first time, blinker phenomena associated with brightenings in pre-existing coronal loops registered by the EIT in Fe XII 195?. ... We suggest that the blinker activity we observe is triggered by interchange reconnection, serving to provide topological connectivity between newly emerging flux and pre-existing flux. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Australia Telescope Online Archive (ATOA) . ... Australia Telescope 20GHz Survey . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Probing ISM Models with H observations . ... Turbulent Models of the ISM . ...

... Model . ... Karpachev A.T., IZMIRAN, e-mail: karp@izmiran.ru . ... To the Model: . The empirical median model of the shape and position of the MIT (Main Ionospheric Trough) in the Northern and Southern Hemispheres is presented. ... Geomagnetism and aeronomy, v.26, № 1, p.63-68, 1986. ... Karpachev A.T., Afonin V.V. Dependence of the ionospheric trough occurrence probability on the season, local time, longitude, and level of magnetic activity Geomagnetism and aeronomy, v.38, № 3, p.79-91, 1998. ...

... To determine the parameters we want (stellar magnitudes and colors) from the observations we have, we fit the data to a model. The model should represent the circumstances of the observations as realistically as possible; otherwise, effects present in the data but not in the model will be distributed among the available adjustable parameters, such as stellar magnitudes, extinction coefficients, and transformation parameters. ... The bias problem . ...

... Comparing the periods from the model and P2030 data (.ps) ( .pdf ) . aeroPer.dat...file containing aerostat periods. ... The model was then used to determine the periods that it could generate in pulsar observations. ... rf pulse length: 320 Useconds (this is actually 2 160 usecond pulses that are sequential in time). 7 ipps of 3771., 3504., 3076, 2809., 2903.5, 3289., and 3676. useconds. blanking of the radar signal for 42 degrees of azimuth centered on the observatory direction. ...