... HST is subjected to cosmic rays and protons from the Earth's radiation belts. ... Cosmic ray events usually deposit significant quantities of charge in more than one pixel. ... Figure 4.7 shows a histogram of the number of affected pixels for each cosmic ray event. ... Cosmic ray events do have a clear lower cutoff at around 500 electrons of total signal. ... The number of pixels affected by cosmic ray events in a given exposure is a slightly more sensitive function of the threshold used. ...

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• SAA and Scheduling System Changes
• Warm and Dense Molecular Gas in the N 159 Region: 12CO J = 4-3 and 13CO J = 3-2
• COS Instrument Handbook

... 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. ...

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... The dayside auroral precipitation consist of magnetosheath related boundary layer precipitation, and plasma sheet related BPS/CPS precipitation (extensions of the nightside precipitation regions). ... For example, the much lower fluxes from the LLBL region when compared to the cusp are compensated by the bidirectional electron beams found in the LLBL: the precipitating energy fluxes in the LLBL and the cusp are not that different. ... directly through the cusp and plasma mantle . ...

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• Remote Sensing of Tropical Regions
• Auroral ovals [Oulu]
• The Earth's Magnetosphere

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... AIA 304 ? ... bottom) images (colour table reversed) of a coronal hole region at the South Pole taken on 14 May 2010. ... In the present work we derive a Differential Emission Measure (DEM) distribution from a region dominated by spicules. ... This distribution is then used to study the thermal properties of the emission contributing to the 171 ? ... From our off-limb DEM we found that the radiance in the AIA 171 ? ...

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• C. Refereed Journal Publications 2001

XMM-Newton CCF Release Note XMM-CCF-REL-192 EPIC MOS response S.F. Sembay, R.D. Saxton 19 August 2005 1 CCF components Name of CCF VALDATE EVALDATE Blocks changed XSCS ag EMOS1 REDIST 0057.CCF 2001-11-25 2002-05-01 CCD REDISTRIBUTION-n NO EMOS1 REDIST 0058.CCF 2002-05-01 2002-11-07 CCD REDISTRIBUTION-n NO EMOS1 REDIST 0059.CCF 2002-11-07 2004-01-01 CCD REDISTRIBUTION-n NO EMOS1 ... A core region centred on a point between the two boresights where EPIC-pn and RGS are prime. ...

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• pipeline packages
• Description

... High-resolution Halpha observations reveal the existence of an unusual bar in the disk of NGC 1808 at a position angle of 155 degr, about 20 degr offset from the major axis. ... A remarkably similar bar has been found in the galaxy NGC 7479. The outer parts of the HII region chain in NGC 1808 coincide with maxima in the HI gas distribution and further out connect to the outer spiral arms. The streaming of gas along the bar is clearly seen in the HI velocity field. ...

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• ATNF Colloquium
• ATNF Daily Astronomy Picture
• Distribution of Young Stars

... Figure: A dark current CCD exposure with cosmic ray events which are removed with non--linear filters. ... Figure shows a CCD dark current exposure with cosmic ray events. ... Figure: Removal of cosmic ray events on a CCD spectral exposure with different techniques: (A) original, (B) median filter, (C) recursive filter and (D) stack comparison. ... For comparison with non--linear filter techniques, Figure D shows removal of cosmic ray events from the spectral frame discussed above. ...

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• The RATAN SNRs Survey
• A 10-GHz Radio Continuum Survey
• Optical spectroscopy

Next: Spectral Extraction of Point Up: Spectral Analysis Previous: Structure of the Spectral . A pulse height distribution can be extracted from a QPOE file only if the event structure is `large', `region', or `full'. ... With the new RDF format files, the output from qpspec for most instruments is split into three files: . ... source off-axis histogram . ... background off-axis histogram . For Einstein IPC, there are no off-axis histogram files, but there is a BAL histogram file, _bal.tab. ...

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• *imcnts* - Radial Profile of an extended source at the field center
• Spatial Region Boundaries
• Notes on IPC and PSPC Spectral Fitting

... The Cosmic Web of the Tarantula Nebula . ... Located in the Large Magellanic Cloud , a small satellite galaxy orbiting our Milky Way galaxy, the region 's spidery appearance is responsible for its popular name, the Tarantula nebula . ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: Large Magellanic Cloud - LMC - Tarantula Nebula - star formation . Publications with words: Large Magellanic Cloud - LMC - Tarantula Nebula - star formation . ...

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• XWare > APOD

Neutral hydrogen distribution in the region of radio source Cygnus X . ... HI distribution in the region of radio source Cygnus X and supernova remnant G78.2+2.1 has been investigated from observations in 21 cm radio line using radio telescope RATAN-600. ... The existance of the large HI shell and a cavity in molecular gas distribution around Cygnus X indicates this radio source most probably to represent a united structure and whole gas may be drived by stellar wind of Cyg OB2 stellar assotiation. ...

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• Results scientific researchs LRS
• History
• Laboratory of spectroscopy and photometry of extragalactic objects : Devices

... The dates are shown along the X axis, . The time on the orbit counted from ascending node of the each turn is shown along the Y axis. ... The geomagnetic local time is shown along the Y axis. ...

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• The Exploration of the Earth's Magnetosphere"
• The magnetosphere models
• The plot of the magnetic conjugation's time distribution

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2011 January 11 . The Cosmic Web of the Tarantula Nebula . ... Located in the Large Magellanic Cloud , a small satellite galaxy orbiting our Milky Way galaxy, the region 's spidery appearance is responsible for its popular name, the Tarantula nebula . ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

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• APOD: 2014 February 17 - The Cosmic Web of the Tarantula Nebula
• APOD: 2008 November 11 - The Cosmic Web of the Tarantula Nebula
• APOD: 2004 April 14 - Massive Star Forming Region DR21 in Infrared

... It is notoriously difficult to identify weak cosmic ray events in long exposure observations. ... The method is to compare the probability distribution function (PDF) of cosmic ray events between an observation and a dark frame matched in exposure time. We illustrate the basic idea using dark exposures from a Tek 1024 1024 CCD with varying exposure lengths and read-out times. ... Figure: Histogram of cosmic ray events in a two hour dark frame. ... Original PostScript figure (78 kB) . ...

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• Modelling Spectro-photometric Characteristics of Eclipsing Binaries
• A Method for Visualizing Time Variability in X-Ray Images
• A Graphical Planning and Scheduling Toolkit for Astronomical Spacecraft

Statistical inversion method for binary asteroids orbit determination I.Kovalenko, D. Hestroffer, A. Doressoundiram, N. Emelyanov, R. Stoica ikovalenko@imcce.fr (IMCCE - LESIA, Paris Observatory) Introduction We focus on the study of binary asteroids, which are common in the Solar system from its inner to its outer regions. ... Particularly, we use the Metropolis-Hasting algorithm with Thiele-Innes equation for sampling the orbital elements and system mass through the sampling of observations. ...

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• http://www.gao.spb.ru/english/publ-s/viii-rfs/p099.pdf
• http://www.gao.spb.ru/english/as/j2014/presentations/guseva.pdf

Spacecraft STP Data 1. ... This CD-ROM contains solar flare reports, sunspot numbers and regions histories, total solar irradiance, and solar bursts. ... MAGSAT - 2 discs. ... A Compilation of 1963-1999 Solar Wind Field and Plasma Data, Near Earth and Deep Space - 3 discs. This CD-ROM contains the interplanetary magnetic field (IMF) and solar wind plasma (SWP) data from several spacecraft which have explored the near-Earth and deep space regions over the last three decades. ...

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• http://www.wdcb.ru/stp/data/cat6CDR/SUN%20data
• http://www.wdcb.ru/stp/data/cat6CDR/Cosmic%20Ray%20Data
• http://www.wdcb.ru/stp/cat2ION.html

... CV & PUBLICATIONS | ... Nicholls, DC, Dopita, MA, Sutherland, RS, Jerjen, H, & Kewley, LJ " Metal-poor Dwarf Galaxies in the SIGRID Galaxy Sample. ... Nicholls DC, Jerjen, H, Dopita MA, & Basurah, H. (2014) " Nebular Metallicities in Two Isolated Local Void Dwarf Galaxies ", Astrophysical Journal 780, 88 * . ... Sweet SM, Drinkwater MJ, Meurer G, Bekki K, Dopita MA, Kilborn V, & Nicholls DC, " CHOIRS H I Galaxy Groups: The Metallicity of Dwarf Galaxies" , (2014) Astrophysical Journal , 782, 35 * . ...

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• The SMS Survey
• IAU Commission #34 (Interstellar Matter)
• The Milky Way in the region of the Southern Cross (Crux) and Centaurus rising

THE CHEMICAL COMPOSITION OF REGOLITH AT THE MOON'S SOUTH POLE, ACCORDING TO DATA OF LUNAR PROSPECTOR AND LUNAR RECONNAISSANCE ORBITER MISSIONS. ... Introduction: The article tells about the results of integrated study of the craters at the Moon's South Pole with permanently shadowed region of craters. ... We have compared the ultimate composition of the soil matters in the craters with "cold traps" in the Moon's South Pole with regard to thorium, ferric oxide and hydrogen contents (Fig. ...

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• http://selena.sai.msu.ru/Shev/Publications/m44_76_sinitsin_shevchenko.pdf
• http://selena.sai.msu.ru/Symposium/ant.pdf
• http://selena.sai.msu.ru/Symposium/ant.doc

Proposal Identification No.: A2004 Date Received: 2004 -Sep-30 12:45:57 Technical Page Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Commensal Astronomy Spectroscopy Galactic 28 Hours An Initial HI Survey of the Taurus Region We propose to carry out a high spectral resolution survey of a 60 square degree region of the Taurus Molecular Cloud. ... X Part of the observing run. ...

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• I-GALFA View of a Galactic Tangent Region

Variations of total ozone content and lower ozone stratosphere temperature in Antarctic Region during winter-spring period A.V. Grytsai National Taras Shevchenko University of Kyiv Astronomy and Space Physics Department assen@univ.kiev.ua Data, used in the work work Total ozone: Total Ozone Mapping Spectrometer (TOMS) measurements during 1979 - 2005 and Ozone Monitoring Instrument (OMI) ones for 2006, for http://toms.gsfc.nasa.gov/ftpdata.html. ... A long-term TOC decrease is significant. ...

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Main research interests: . 1.The evolution of the gaseous content of the Universe: distribution of the neutral and ionized gas in large scale cosmic structures, such as Lyman-alpha absorbing clouds and dwarf galaxies at various cosmological times. Estimates of the cosmological baryonic content. ... 3.The ISM and IGM in our Local Group: the effects of the cosmic web and background radiations on our Local faintest and bright galaxies. ...

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• The BD+40 region (Abstract)
• Young stellar clusters in the star forming region NGC 6357
• Pluto and Charon