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Instrument Science Report NICMOS 2003-004 Measuring the Cold Mask Offset E. Roye, J. Krist, A.B. Schultz, T. Wiklind April 23, 2003 ABSTRACT An unexpected increase in measured thermal background during the Cycle 11 early calibration program caused speculation that the cold mask position could have shifted since Cycle 7. ... It was concluded that the cold mask position was not the cause of increased thermal background observed during the Cycle 11 early calibration program. ...

XMM-Newton CCF Release Note XMM- CCF -REL-202 EPIC MOS response S.F. Sembay, R.D. Saxton 22 November 2005 1 CCF components Name of CCF VALDATE EVALDATE Blocks changed XSCS ag EMOS1 REDIST 0065. CCF 1999-12-10 2000-07-15 CCD REDISTRIBUTION-n NO EMOS1 REDIST 0066. CCF 2000-07-15 2000-11-09 CCD REDISTRIBUTION-n NO EMOS1 REDIST 0067. CCF 2000-11-09 2001-04-18 CCD ... Two spectra have been extracted, one from the inner core (0-15") and one from the outer wings (15-40"). ...

... This article reviews what we have learnt about PKS 0637-752 so far, describes a search for X-ray jets with Chandra and the important contribution being made by the new millimetre-system at the Australia Telescope Compact Array. Figure 1: Compact Array 8.6-GHz (contours) and Chandra X-ray emission (pixels) in PKS 0637-752. ... Compact Array 3 and 6-cm images of PKS 0637-752 show a bright westward-pointing jet coincident with the X-ray emission discovered by Chandra. ... Jim.Lovell@csiro.au) ...

Full Stokes 327-MHz Continuum Observations of the GALFACTS Pilot Region Wasim Ra ja, Avinash Deshpande, Tapasi Ghosh, Chris Salter & Andrew R. Taylor Background and Scientific Justification Several existing surveys have mapped the polarized intensity of the extended Galactic emission at various frequencies using single dish as well as synthesis imaging. ... The underlying distribution of the polarized emission and the magneto-ionic medium would be apparent in the images resolved across Faraday depth. ...

... An Unexpected Flare from the Crab Nebula . ... Credit Copyright: NASA , DOE , Fermi LAT , R. Buehler ( SLAC , KIPAC ) Explanation: Why does the Crab Nebula flare? ... As recently as one month ago, gamma-ray observations of the Crab Nebula by the Fermi Gamma Ray Space Telescope showed an unexpected increase in gamma-ray brightness, becoming about five times the nebula's usual gamma-ray brightness, and fading again in only a few days. ... Publications with keywords: Crab Nebula - gamma ray . ...

... Professor Mark Bailey completed work with the former PDRA Vacheslav Emel'yanenko on the capture of Halley-type comets from the long-period cometary flux. He also completed a paper with Ph.D. student Scott Manley on collision probabilities between small solar system bodies, and together with PDRA David Asher and visiting research fellow Vacheslav Emel'yanenko provided the explanation for the unexpected outburst of Leonid fireballs on the morning of 1998 November 17. ...

... Second, the observatory can control the configuration, test data analysis procedures, and provide calibration solutions with the help of instrument models. This paper presents the VLT object-oriented framework for the development of ETCs (Exposure Time Calculators) and data simulators. ... Instrument simulations are being developed for the purpose of predictive calibration, instrument configuration control, and evaluation of data analysis procedures. ...

XmCCD ----- The programs provided here offer a Linux graphical user interface to astronomical and scientific CCD cameras. ... It is the latest one they offer and the files included allow support for Android and Mac OS X. This distribution of XmCCD includes source code to utilize the SBIG shared library libsbigudrv.so with a Motif-based graphical user interface. ... The XmCCD source package includes and will install: SAOimage ds9 xpa cfitsio SAOimage is the primary image display for XmCCD. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2013 November 12 . The Unexpected Tails of Asteroid P5 . Image Credit: NASA , ESA , and D. Jewitt ( UCLA ) et al. Explanation: What is happening to asteroid P/2013 P5? ... Were the main belt asteroid struck by a large meteor, it would be expected to sport a single dust tail. ... About APOD | ... A service of: ASD at NASA / GSFC . ...

The Chi-Square Goodness of Fit Statistic . This statistic enables us to test whether observed frequencies are close to . those we would expect. ... Expected frequencies . ... For example, if we . have an honest die we would expect 1/6 of all cases to show any of . ... So, for example, if we roll a die 60 times we would expect : . ... If we actually roll a die 60 times we wouldn't expect each of the faces . ... times each face actually comes up is the observed frequency for that face. ...

... Actual stars are expected to be more complicated than these simulations. ... The spot may be entirely visible most of the time (one would observe a prolonged flux minimum low), and then part of it may disappear over the horizon briefly and then return (slow rise and then fall back to constant level). ... With the set of observations taken here, I have information available from several comparison stars and color information. ... The period found must be consistent with the data from any given night....

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . Brief History of Rocket and Space Technology . ... ISS Russian Segment . ... ISS 45/46 . ... Experiments and Researches from 2013 . ... Defining the in-flight relationship between changes in the eye structure, state of its blood vessels and sense of vision and movement of fluids to the head, sizes of the blood vessels and blood flow types. ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

Next: A Gravitational Wave Map Previous: Critical Frequencies and Gravitational . In this section we consider the GWB spectrum as such, that is, we study how dimensionless strain metric amplitude h is dependent on frequency. For a sample of N independent binaries emitting GW at a given frequency the net result is . ... are, respectively, effective distance to the sample and effective mass of the binaries (in solar units) producing the GW radiation at the frequency . ...

The very metal-poor local dwarf galaxies - the analogs of primordial galaxies in young Universe . ... The goal of this project is the study of the properties of the local eXtremely Metal-Deficient (XMD) dwarf galaxies. ... S.A. Pustilnik, J.-M. Martin . ... Pustilnik S.A. "Dark galaxies" and local very metal-poor gas-rich galaxies: possible interrelations, in: Dark Galaxies and Lost Baryons, Edited by J.Davies and M.Disney, Proceedings of IAU Symposium No. 244, held 25-30 June, 2007 in Cardiff, UK. ...

... solar system . ... Comet dust reveals unexpected mixing of solar system . ... Chemical clues from a comet's halo are challenging common views about the history and evolution of the solar system and showing it may be more mixed-up than previously thought. A new analysis of dust from Comet Wild 2, collected in 2004 by NASA's Stardust mission, has revealed an oxygen isotope signature that suggests an unexpected mingling of rocky material between the center and edges of the solar system. ...

... Preliminary analysis of early data returned by NASA's historic Galileo probe mission into Jupiter's atmosphere has provided a series of startling discoveries for project scientists. ... These initial findings are encouraging scientists to rethink their theories of Jupiter's formation and the nature of planetary evolution processes, according to probe project scientist Dr. Richard Young of NASA's Ames Research Center, Mountain View, CA. ... GIF, 29K ) . ... Structure of Jupiter's Atmosphere . ...

... I.A.Dynnikov, Three-page approach to knot theory. ... Universal semigroup, Funktsional'nyi Analiz I Prilozhenija, 34 (2000), no.1, 29-40 (Russian); English translation in Functional Analysis and Its Appl. 34 (2000), no.1, 24-32. I.A.Dynnikov, Finitely presented groups and semigroups in knot theory. ... Math. 2000, no. ... English translation: Russian Math. ... A.Vershik, Numerical invariants of exponential groups, and a locally free approximation of braid groups (in Russian), Zapiski Nauchn. ...

... Over the first 4 years, its X-ray telescopes eROSITA and ART-XC will survey the whole sky with a record sensitivity in the 0.5-10 keV energy band. ... The goal of the second international Spectrum-RG conference is to discuss the different scientific topics addressed by the mission, synergies with surveys at other wavelengths, and requirements to follow-up observations.Contributed talks and poster presentations are invited on the topics related to the SRG science goals. ... Active galactic nuclei . ...

Mercury Summer 2011 Table of Contents . ... A Hubble Space Telescope view of a segment of the Coma Cluster of galaxies, one of the densest known galaxy collections in the universe. ... In 1998, competing teams of astronomers were forced to come to grips with increasingly convincing observations that the expansion of the universe was accelerating , rather than decelerating (as they expected). ... Its discovery resulted directly from measurements of the distances to remote galaxies. ...