The Sun's corona . ... For instance, short "plumes" rising from the polar regions of the Sun look very much like field lines coming out of the end of a bar magnet, and they therefore suggest that the Sun, in addition to the intense fields of sunspots, also has a global magnetic field like the Earth's. Arches above the . Sun's surface . ... It is brightest near sunspots, whose arched field lines apparently hamper the outflow of solar wind which carries away energy and helps cool the corona. ...

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• A Brief History of Magnetospheric Physics Before the Spaceflight Era
• Magnetic Fields
• Plasma convection [Oulu]

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

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... This map is called the two-dimensional Contou-Carrere symbol. I will explain the first properties of this symbol. I will prove the reciprocity laws for this symbol on algebraic surfaces over finite fields. I will explain how all reciprocity laws which one needs to construct Parshin-Kato global two-dimensional class field theory can be obtained from reciprocity laws for two-dimensional Contou-Carrere symbol. Poncelet Laboratory web page . ...

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• Conference Global Fields
• Conference "Global fields"

... David P. Stern Laboratory for Extraterrestrial Physics NASA . ... Alfv?n's Theory and Electric Fields . ... The debate between proponents of a static corona, Parker's solar wind theory, and an alternative "solar breeze" theory of Chamberlai n [1960, 1961; Dessler 1967] was only settled by observations from space. ... Rapidly spreading plasma clouds produced by solar flares, like those envisioned by Chapman and Ferraro, are sometimes superposed on the solar wind flow. ...

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• The Sun's Corona
• Magnetic Fields
• FAQ: "Exploration of the Earth's Magnetosphere"

... HST . ... Data . ... HST Overview . Overview . ... Cycle 24 Announcement . ... Retrieving HST Data . ... Instruments . ... Grism Spectroscopy . ... UVIS Flats . ... Instrument Handbook . Data Handbook . ... The Wide Field Camera 3 (WFC3) is a fourth-generation UVIS/IR imager aboard the Hubble Space Telescope (HST). WFC3 was installed in May 2009 during HST servicing mission 4, and replaces the Wide Field Planetary Camera 2 (WFPC2). ... ISR 2016-09: WFC3 Cycle 22 Proposal 14007: UVIS Gain . ...

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• HDF-S Data Products
• HST/ACS Ultra-Deep Field
• ACS Data Handbook

... As a result of BTA observations of 23 chemically peculiar stars with strong magnetic fields, it was found that in 22 of them the longitudinal magnetic field, measured from the hydrogen line cores are considerably lower (by about 1/3) than the value measured from metal lines in the same spectra. ... New approaches need to be developed in order to interpret the data. ... The Zeeman spectrum of a star with a strong magnetic field, 53 Cam. ...

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• Suppression of cooling by strong magnetic fields in white dwarf stars
• topic_en
• SAO RAS home page

... This precise description is called the standard model of electroweak physics. ... What brings about this important difference in the mass of these "field" particles? ... The Oregon group participates in the ATLAS experiment to investigate this question. ... Since Oregon joined ATLAS early in 2006, the group has devoted its effort to the process of selection of interesting events generated by the collisions of high energy particles within the ATLAS detector. ...

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• University of Oregon Center for High Energy Physics - Recent Experimental Talks
• Potential Energy
• Hubble Ultra Deep Field

... The GALFA Continuum Transit Survey group ( GALFACTS ; PI: A. R. Taylor) has conducted several test observations and will begin an all-sky full-Stokes continuum survey later this year with the new P-ALFA spectrometer. ... Sample Perseus images of GALFA H I 21cm-line and full-Stokes continuum emission are shown below along with maps of molecular (CO) gas, thermal dust, and ionized gas optical emission for comparison. ... The GALFA H I emission appears to envelop the molecular cloud gas traced by CO. ...

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• Slide 25
• I-GALFA Survey Fields
• Frontiers of Astronomy with the World's Largest Radio Telescope Frontiers of

... Takuya Akahori "Faraday Rotation Measure due to the Intergalactic Magnetic Field" . Shae Brown "Cross-correlation of ATLAS and Spitzer-SWIRE Surveys: Probing intergalactic magnetic fields" . Roger Clay "Using low energy cosmic rays to investigate local galactic magnetic fields" . Roland Crocker "A new lower limit on the magnetic field around the Galactic Centre" . ... JinLin Han "Rotation measures of pulsars and radio sources for Galactic magnetic fields" . ...

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• VELOCITY-FIELDS tasks
• ATNF Colloquium
• Extragalactic/Intergalactic Magnetic Fields

Solar High Resolution Studies . ... Dynamic magnetic fields continuously emerging from the solar interior on a wide range of scales, and their interaction with convectively-driven plasma flows, play a major role in shaping the whole solar atmosphere. Even though the fundamental spatial scales of turbulence and magnetic fields are still unreachable with present-day telescopes, polarimetric observations at the highest possible resolution will allow important insights into these issues. ...

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• A collection of images
• The Hubble Deep Field
• research field

... The Wide Field Spectral Imager ( WISPI ) seen here in the Roll Roof Facility provides visible and near-infrared spectra of the sky across 4 degree fields. ... A computer controlled mounting automates the acquisition of 2-D rastered spectral images. ... Light from the sky enters the large 400mm lens at top center, is imaged on the slit, collimated by the smaller 180 mm lens, and diffracted by the grating at the bottom toward the 200mm lens and CCD camera on the right. ... Camera - 200mm f/2 Nikor ED ...

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• University of Louisville Wide Field and Planetary Telescopes
• BinaryProcessor (ImageJ API)

... Fields Observed . ... Data Archive . ... Complete Optical and X-ray data for all ChaMPlane fields are available through the DS9 VO interface . ... functionality of DS9 is available to manipulate the results in addition to those provided by the "Champlane tools" You can select images, compare . ... our region of interest has been selected by drawing a red square region on the image. at bottom left the high res optical image of that selected region, and on the right is the X-ray image. ...

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• High Energy Astrophysics
• Period Determination
• ROSAT and EINSTEIN Calibration Fields

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The Kepler SC light curves of the eleven sources which appear to be Sct type stars. ... We outline the purpose, strategy and first results of a deep, high cadence, photometric survey of the Kepler field using the Isaac Newton Telescope on La Palma and the MDM 1.3m Telescope on Kitt Peak. ... Our survey covered тИ®42% of the Kepler field of view and we have obtained light curves for 7.1†Ч105 objects in the range 13 . ...

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• James Aumonier: Cattle in the fields

... The very first thing you should do now is to locate the limits of your slitlets because this information is needed for all further commands. ... LOCATE/MOS . ... Then you should have a look at your flat field and try again with . ... OFFSET/MOS . ... The results are stored in the frame . If you have not written anything to this keyword it will derive the name of the normalized flat field by adding an `n' to the name of the input flat (e.g. nmosff1 ) and write the name to . ... FLAT/MOS . ...

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• HyperLEDA documentation: compilation of cz measurements (a110)
• Illumination Corrected Flat Fields
• Flat Field Correction

... 1.Magnetic and magneto-elastic properties of heavy rare earth metals. ... High magnetic fields of 100 kOe and more were necessary to saturate the magnetization of havy rare earth metals. ... It was shown that the effective exchange field theory is sufficient for the description of the magnetic order in heavy rare earth metals and their compounds. ... The duality of the state of the magnetic carriers in the traditional 3d-magnetic materials. ... LHPP ISSP RAS © 2004 All rights reserved ...

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• LEK - Info
• High-purity Powders of II-VI compounds
• Laboratory of Real Structure of Crystals ISSP RAS

... The Comet and the Galaxy . ... The Moon almost ruined this photograph. During late March and early April 1997, Comet Hale-Bopp passed nearly in front of the Andromeda Galaxy. Here the Great Comet of 1997 and the Great Galaxy in Andromeda were photographed together on 1997 March 24th. ... Twenty years ago this month, NASA's Voyager 1 spacecraft flew past Jupiter and its moons. ... Add another 8-meter telescope to the list of modern optical telescope giants. ... A Jupiter Venus Conjunction . ...

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SAS home . ... EPIC background spectra are normally extracted from regions of the observation field-of-view, once "contamination" due to individual discrete celestial sources has been removed. ... In order to cope with this situation, blank sky event lists can be downloaded from the XMM-Newton Science Operations Center web site. ... It is in principle possible as well to extract background spectra from blank field event lists, if the spectrum accumulation regions are defined in sky coordinates. ...

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• Field of View
• SciSim Advanced Search
• SciSim Changes v2.0.2

... Projects . ... High Energy Astrophysics department at IKI, Moscow, is carrying out research in various fields of X-ray astronomy: physical processes in the vicinity of compact sources of x-ray emission, x-ray observations using Russian space observatories MIR/KVANT and GRANAT, development of scientific instrumentation for the SPECTRUM-X-GAMMA mission and International Space Station (ISS), participation in the INTEGRAL project and observations on the RTT-150 optical telescope. 2016 IKI RAN ...

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• High Energy Astrophysics Today and Tomorrow

Local galaxies are in a state of energy equipartition which means that the kinetic energy density equals roughly the thermal one and the magnetic one. ... In models of young galaxies magnetic fields are usually not considered as they are assumed not to be dynamical important at high redshifts. In the presence of turbulence, however, the turbulent dynamo can amplify weak magnetic seed fields by randomly stretching, twisting, and folding the field lines. ...

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• Siding Spring Survey Follow-up Obs
• Gemini Near-Infrared Integral-Field Spectrograph (NIFS) Spectrograph.
• Gemini Near-Infrared Integral-Field Spectrograph (NIFS) Overview.

... The Russian TESIS/ CORONAS-PHOTON Solar Observatory, which has been working in orbit since January 30th, 2009, has photographed one of the most important events in the build up to the upcoming solar cycle - the formation of our star's new southern belt of activity. The first magnetic fields of the new cycle in the southern hemisphere appeared on the Sun's surface on May 23-24th. ... The belt of activity is one of the primary concepts, characterizing the solar cycle. ...

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• Project's diary
• The culmination of the solar eclipse coincided with the strongest magnetic