Astronomy Discussion Forums . Forums: . ... Discussion Forums . ... Just A Little Background On Dick . Forum List | ... Post Message | ... Posted by Harvey on November 25, 2002 21:07:26 UTC . ... He knows a lot of math, probably more than anyone on this forum. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Dr. Max Tegmark, Associate Professor of Physics, MIT . ... Dr Tegmark’s research is focused on precision cosmology, that is, combining theoretical work with measurements (CMB, gravitational lensing) to place constraints on cosmological models and their free parameters – how the underlying physics (dark matter, dark energy, gravity) can be tested rather than assumed. ... Click for more on Dr. Tegmark . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... Journal: 1973, Astron Zh., ... The isotopic shifts of helium spectral lines have been measured for four high velocity OB-stars and one standard star. The spectrograms were secured at 2.6 m reflector of the Grimean observatory, dispersion beging 8 / mm . All five stars did not show the systematic isotopic shifts. But three lines of 53 Ari have shown shifts which are in agreement with theoretical ones, but other helium lines did not show such shifts. ...

... Hartmann Test Using a Screen With Four Holes 2 Hartmann test with four holes screen The theoretical concept of the primary aberrations measurement by four apertures Hartmann test introduced by "Malacara" * and "SalasPeimbert et. al. ... Black curve show the calculated coefficients for phase screens which have 8 modes of Zernike aberrations and red curve show the calculated coefficient for original phase screen. (a) astigmatism 45 (b) astigmatism 090 14 Coma Coma modes of Zernike aberration. ...

... Star Atlas . ... Supernova showered Earth with radioactive debris . ... stars . ... Brightest supernova ever seen pushes theoretical models to the edge . Researchers have discovered the brightest supernova ever seen, and the unusual object powering it could challenge what physicists know about dying stars. ... The supernova, named ASASSN-15lh, was 20 times brighter at its peak than the combined light of the Milky Way galaxy s 100 billion stars, making it the brightest supernova ever observed. ...

... Prompt and Follow Up Observations of Gamma-Ray Bursts . ... Video weather at MASTER-Domodedovo . Video weather at MASTER-Kislovodsk . ... Survey data . GCN sites and links . ... GCN . ... Conus data . HETE data . ... Weather . ... Last SN . Last SN: full list . Comet Observation Home Page . Gaia Science Alerts Working Group . ... The Earth-Orbiting Space Junk Tracking Page . ... GCN Circulars . ... Internet observations . Hete pointing direction . ...

Full-Text Search . ... arXiv.org . astro-ph . ... SAI VO . Search sort results by Date Relevance . ... Whitespace-separated words are treated as AND ed. Show 10 50 100 articles per page in Full Compact mode . Astrophysics . Astrophysics, Department of Theoretical . Astrophysics, - Oxford . ... Astrophysics, Harvard-Smithsonian Center for . Astrophysics, Institute of . Astrophysics, the Center for Backyard . Astrophysics, Kavli Institute for . ... Astronet | ...

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SLIDE 1 Coherent beam­beam e#ects study. ... He has shown that a finite length (in other words equal to # # ) of colliding bunches can lead to the coupling of synchro­betatron modes in the beam­beam system, and thus a head­tail type instability of colliding bunches may arise. ... These modes have been observed in di#erent machines. ... SLIDE 5 Figure shows the dependence of the measured and calculated synchro­betatron mode tunes on the beam current for equal electron and positron bunch intensities. ...

August, 2012, Odessa, Ukraine EVENTS: Monday, 20.08.2012 Arrival 09.00 ­ 22.00 Registration of participants 20.00 ­ 22.00 Evening session : Astronomical Society news (conference hall of ONU recreation center « Chernomorka ») Tuesday, 21.08.2012 06.03 09.00 09.30 10.45 12.45 13.00 14.30 16.00 16.30 18.00 19.00 19.57 21.00 06.04 09.30 11.00 11.30 13.00 14.30 16.00 16.30 18.30 20.00 19.56 ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ 13.00 10.45 12.45 ... 10 Section 3. ... 14.30 ­ 15.30 Section sessions ­ .. ...

... 9) Oknyanskij V.L. 1994, "Optical-radio time delays in Q0957+561", Odessa Astronomical Publ., ... 11) Oknyanskij V.L. 1994, "Connection between X-ray and optical variability in NGC4151", in Proceedings of Int. Conf. ... 1994. 12) Oknyanskij V.L. 1994, "Connection between X-ray and optical variability in NGC4151", Astrophys. and Space Science, 222, p.157. ... 14) Oknyanskij V.L., van Groningen E., 1997, "Optical spectral variability of NGC4151 in 1990", Astronomical and Astrophys. ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... The ionogram catalogue is divided into the data file and the key file. ... The station codes database consists of the data file and two key files. ... This database consists of the data file and the key file. ... The antenna DB consists of two interrelated databases. ... The data file contains the following information: antenna type, antenna name, antenna parameters names, measurement units, and ranges of parameters. ...

... 18941904; Bespalov P.A. Effective saturation of absorption in a plasma magnetospheric maser. In book: Nonlinear Space Plasma Physics, R.Z. Sagdeev -Editor-in-Chief, American Institute of Physics, 1993, p.339-346]. Magnetospheric plasma maser [Bespalov P.A, Trakhtengerts V.Yu., ... In a magnetospheric plasma maser (MPM) the relatively dense magnetised plasma and the conjugate ends of a magnetic trap form a quasioptical resonator for electromagnetic waves. ...

... Seminar archive . ... Бескин В. С. В последнее время заметно снизилось количество работ, посвященных классическим проблемам пульсаров -- теории магниосфер радиопульсаров и теории происхождения пульсарного радиоизлучения. ... In the last years the number of papers devoted to classical problems - theory of the magnetosphere of radio pulsars and theory of their coherent radio emission - decreased abraptly. ... I'm going to review the last theoretical works on radio pulsars. physics. All seminars: . ...

... Arefiev, Vadim - Space Research Institute (IKI), Russia . ... Becker, Werner - Max Planck Institute for Extraterrestrial Physics, Germany . ... Bergemann, Maria - Max-Planck Institute for Astrophysics, Germany . ... Tuebingen, Germany . ... Lyskova, Natalya - Max Planck Institute for Astrophysics, Germany; Space Research Institut (IKI), Russia . ... First eROSITA International Conference: Mapping the Structure of the Energetic Universe 17-20 Oct 2011, Garmisch-Partenkirchen (Germany) . ...

THE PARAMETERS INVOLVED IN HAPKE'S MODEL FOR ESTIMATION OF THE COMPOSITION OF THE EJECTA LUNAR TERRAINS. ... In the previous papers we were estimated the surface roughness of the ejecta lunar terrains by means comparison of the local phase function and the average integrated lunar indicatrix. ... The Hapke's theoretical model of the lunar surface reflection. ... For THE PARAMETERS INVOLVED IN HAPKE'S MODEL: S.G. Pugacheva, V.V. Shevchenko a low-albedo lunar surface parameter Bo = 1. ...