... This section will deal with obtaining photons within specified regions of an image. Available regions are: Annulus Box Circle Ellipse Field -- entire field Irregular region based on intensity of map... i.e. region defined by contour levels. ... The imcnts task in the xray-spatial package sums the source and background counts in specified regions, and subtracts one from the other properly normalized. ... imcnts* - Find counts in an extended region, after removing an embedded point source . ...

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. ...

... We report on our ongoing project ``Infrared Study of HII Regions Associated with Small Clouds.' ... These IR data, combined with optical imaging (which will be obtained from the IAC-80 telescope), IRAS survey maps, and existing CO observations of the associated clouds, will allow us to undertake a detailed investigation of the gas-to-dust mass ratio, initial mass function and the star-formation efficiency in these complexes. ... CHECKPSF: check the PSF (Point Spread Function) model, . ...

We present spatially resolved Spitzer Space Telescope imaging of the supergiant shell region of the M81 group dwarf galaxy IC 2574 obtained as part of the Spitzer Infrared Nearby Galaxies Survey. This region harbors one of the best nearby examples of a kinematically distinct H I shell, with an associated remnant stellar cluster; the shell is initiating sequential star formation as it interacts with the surrounding interstellar medium. ...

... 227Wink This paper containes an investigation of 91 sources which appear to be point sources when observed with the angular resolution of the 100-m telescope at 4.9 GHz, teta_a = 2.6', and which we expected to be HII regions. The basic search list was prepared from the 4.9 GHz survey of the galactic plane by Altenhoff et al. ... In the present paper we list 4.9 GHz flux densities only for sources for sources for which we present new observations. ... source structure indicated . ...

... Sun images . ... Sun flares . ... Active areas . September : 2015 . ... The following regions with sunspots can be now observed on the Sun's surface . Group number . ... Group length (in degrees) . ... Coordinates and other characteristics of active regions are issued for September 09, 2015 00:31 UT The following H-alpha plages without spots can be currently observed on the Sun's surface . ... Coordinates and other characteristics of active regions are issued for September 09, 2015 00:31 UT . ...

... The regions can be specified via the outunit parameter in either of two projection-plane coordinate systems, namely `detxy' and `xy'. ... The first choice corresponds to columns DETX and DETY of the standard XMM EPIC event list, the second to columns X and Y . ... This information is obtained from keywords in the header of the supplied event list. ... If outunit is given as `detxy' and if the supplied source list is a standard XMM EPIC product then in principle the event list is unnecessary. ...

... An Active Region of the Sun . ... 16.06.1998 . ... Hot plasma is seen exploding off the Sun's photosphere and traveling along loops defined by the Sun's magnetic field . ... The TRACE satellite was launched in April with plans to continue high-resolution imaging as the Sun passes Solar Maximum in the next few years. ... Publications with keywords: Sun - active region - solar maximum . Publications with words: Sun - active region - solar maximum . ... An X Class Flare Region on the Sun . ...

T his page contains synthetic Hertzsprung-Russell Diagrams (HRDs) for a simulated Star Forming Region, assuming different scenarios and timescales for the history of star formation. ... In the paper we only presented the best fits to the HRD of the CMa R1 Star Forming Region. ... Download movie (1.90 MB) . Scenario II: Constant rate of star formation during a time interval delta t . delta t = 0.1 Myr . ... Scenario IV: Linearly decreasing rate of star formation during a time interval delta t . ...

... Radiance image in Si iv 1402.8 (top-left, in reversed color table), Doppler velocity image (bottom-left), nonthermal velocity image (bottom-right) and HMI magnetogram (top-right) of region "A". ... The yellow box on the Doppler image outlines the region where anti-parallel flows are seen. ... A cluster of such loops was observed on the solar disk in active region NOAA11934, in the Si iv 1402.8 spectral raster and 1400 slit-jaw (SJ) images. ...

... 2004 July 26 . A Large Active Region Crosses the Sun . ... Explanation: An unexpectedly large sunspot region is now crossing the Sun. The active region is home to rivers of hot plasma , explosive flares , strong magnetic fields , a powerful Coronal Mass Ejection (CME), and a sunspot group so large it can be seen by the protected eye without magnification. In fact, this region appears larger than Venus did when it crossed the Sun last month. ... About APOD | ...

Next: Arbitrary Regions of Interest Up: Region of Interest and Previous: Region of Interest and . Generally a minimum of three routines are needed to process even ``regular'' regions of interest. ... The routines of interest are: subroutine BoxInput(key,dataset,boxes,maxboxes) subroutine BoxSet(boxes,naxis,nsize,flags) subroutine BoxInfo(boxes,naxis,blc,trc) All routines require an integer array, boxes , which is used to accumulate a description of the region of interest. ...

... 368, 2007 Petr Heinzel, Ivan Dorotovi and Robert J. Rutten, eds. c Some Structural Prop erties of Solar Magnetic Fields B. Ioshpa, E. Mogilevskii and V. Obridko IZMIRAN, Troitsk, Moscow Region, Russia Abstract. We discuss some results of the study of spatial characteristics of solar magnetic fields. ... The global fractal numbers of space distribution of magnetic field on solar surface is closely connected with the mean absolute values of the longitudinal magnetic field for this surface. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. June 16, 1998 . An Active Region of the Sun . Credit: A. Title ( Stanford Lockheed Institute ), TRACE , NASA . ... This false-color image depicts an active region near an edge of the Sun . Hot plasma is seen exploding off the Sun's photosphere and traveling along loops defined by the Sun's magnetic field . ... About APOD > . ...

... A typical density of energetic ions is 1 per cubic cm., and the ions are matched by electrons, generally of lower energy. ... This region is almost empty of plasma--typical density 0.01 ion/cubic cm., the "best vacuum" in the Earth's vicinity--but it contains a relatively strong magnetic field which, since it fills a large volume, can store appreciable magnetic energy, Many believe that this is the storehouse from which substorms draw their energy, releasing it quite rapidly. ...

... Research objects and scientific purposes . Space scientific program includes development and launch of two supersmall spacecrafts "Universitetskiy" and "Kompas-2" intended for monitoring of radiation conditions near the Earth. ... All the studies conducted in the near-Earth space are characterised by strong radiation fields. ... The circular polar orbits, which cover all the near-Earth space, are the most favorable for comprehensive studies of the radiation conditions near the Earth. ...

This diagram illustrates two block boxes, one above the other, with rectangular clipping regions of different dimensions. ... Both axes depict increments of 5px. The clipping region of the first P box lies entirely within it, offset 5px from the top and left edges of the P box, and 10px from the right and bottom edges. ... The clipping region of the second P box resembles that of the first in style and position, except that the right edge is 5px to the right of the P box's right edge. ...

... This example shows the Interference removal for the Baker Electron Density data (Qihou Zhou). ... The Arecibo ISR can measure velocities to an accuracy within 1 m/s for an integration time of 30 second in the D-region. ... The Arecibo ISR can measure the neutral winds and temperature in the E-region. ... We are working on to get the ion neutral collision frequency as well. ... The other parameters that we regularly measure include electron temperature, vector ion drift, light ion contents etc. ...

... The Milky Way in the region of the Southern CтАж . ... Title: The Milky Way in the region of the Southern Cross (Crux) and Centaurus rising in the south-east behind the 24-inch dome . ... The Milky Way in the region of the Southern Cross (Crux) and Centaurus rising in the south-east behind the 24-inch dome NOTE: All images are copyright and must not be reproduced or mirrored in any form without written permission. ...

... Samara region . ... To enhance the prestige of engineering and technical professions and to start training personnel for aerospace companies of the region just from school-days - that is the goal of organizers of the tournament in mobile robotics "R2-D2" and their partners joined their efforts to implement the program "Formation of personnel potential for the aerospace industry through the development of technical creativity of children and youth in the field of robotics - R2-D2 Samara". ...