IV International Astronomy Olympiad . ... Text of these problems is available also . ... To solve every problem you may use constants and well-known values you know by heart. ... The apparent diameter of the Moon, as seen from the Earth, is 31'. ... Can you observe a star with magnitude . ... Consider the stars as black bodies. ... Estimate the diameter of a black hole constructed using this patent from a ship with the mass of 5000 tn (1 tn = 1000 kg). ... What stars would you observe this nigth? ...

... For the past years I have been working on the problem of synthesis of light curves of close binary systems, consisting of a normal star and a compact object (point object with fixed X-ray luminosity). ... Possible existence of a bright spot on the disk's lateral surface is taken into account. ... The last of then will be published in Gordon and Breach Publishers ( Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ... Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ...

... Chapter 1. ... Problems of observational radio cosmology (6) . ... Analysis of radio astronomical data (32) . ... Data analysis system (33) . ... Actuality, goals and results to depend (45) . ... Interactive processing of continuum radio spectra of radio sources (72) . ... Creation of the astrophysical catalogs data base CATS and its application for selection and analysis of radio galaxy samples (112) . ... Data and methods (176) . ... Results of analysis of known radio galaxies data (179) . ...

Peremennye Zvezdy ( Variable Stars ) 32 , No. ... We report on a new episode of decretion disk formation in the IGR J06074+2205 system. ... From a study of three HeI lines, the rotational velocity of the star was determined as km/s. After five years of spectroscopic monitoring of IGR J06074+2205 (Reig et al. 2010), a reversion from emission to absorption of the H line and hence disappearance of the equatorial disk was reported. ... Reig P., 2011, Astrophys.& ...

... Radiation mechanisms of astrophysical objects: classics today . ... Studies of radiation mechanisms and processes of spectra formation in astrophysical objects are among the fundamental tasks of modern astrophysics. ... On this occasion the Saint-Petersburg State University organizes an international conference Radiation mechanisms of astrophysical objects: classics today , which will be held in St. Petersburg from September, 21 to September, 25, 2015. ... Scientific rationale . ... Conference venue...

... Data Analysis SAS News What is SAS? ... Calibration & Background Calibration Background Analysis . ... This document describes one of the projects assigned to me as part of my Young Graduate Trainee placement at ESAC, Spain. ... One project as part of placement involves the development of a new software task, which will form part of the general XMM-Newton scientific analysis package, SAS. ... The problem, however, lies in the way the data are binned in the original SAS process. ...

... The sample of the Local Volume galaxies (distance smaller than 10 Mpc) gives a unique opportunity to study the properties of galaxies including the weakest objects: the absolute magnitude M B -10 and the virial mass M vir 10 9 M x263C;. ... Luminosity function of the Local Volume galaxies. ... The luminosity functions for galaxies are presented: red dashed line - from the 2dFGRS survey (Norberg et al. 2002); blue dash-dotted line - from the SDSS survey (Blanton et al. ...

... Astrophysics Group . ... Optical Interferometry . OIFITS: A Data Exchange Standard for Optical (Visible/IR) Interferometry . ... OIFITS is a standard for exchanging calibrated, time-averaged data from astronomical optical interferometers , based on the FITS Standard (OIFITS is a registered FITS convention ). ... The OIFITS standard is used in the biennial optical interferometry Imaging Beauty Contests: . ... A data exchange standard for optical (visible/IR) interferometry. ...

... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... MeadeтАЩs new LX70 Series offers high-quality German equatorially mounted telescopes with slow-motion controls and heavy-duty steel tripods. ... For crisp wide-field observing and imaging, few optical designs match the performance of a true triple-element apochromatic refractor. ... Meade Standard Field Tripod #07020. ...

... 2) Osservatorio Astrofisico di Arcetri, Largo E.Fermi 5, 50125 Firenze, Italy We present some results about the use of an engineering grade NICMOS3 array for medium resolution spectroscopy. ... The characterization of the array consisted of evaluating the bad pixels percentage, the read out noise and the dark current rate. We acquired dark and flatfield frames, the former without any illumination of the detector and the latter with the uniform illumination of a led diode inside the dewar. ...

... The space station Mir is the most complex and unique vehicle of the twentieth century. ... It is in proposing to UNESCO the procedure of giving to the space station Mir a status of the object of the World cultural heritage of the mankind as a very valuable unique object of the technical culture of the 20th century, and realization of the special project of its preservation. ... Proactive organization work to get in UNESCO the status of the object of the World cultural heritage for the station Mir; ....

Open Systems Handbook: A Guide to Building Open Systems . ... This book is designed to provide interested individuals and organizations with an overview of open systems and the work being done to achieve them. ... This section is organized using a descriptive model of an open systems environment developed by the IEEE PI 003.0 Working Group, which is developing the Guide to POSIX-based Open System Architecture. ... Standards for open systems 13 . Chapter 3: The open systems environment (OSE) 15 . ...

This file has three main parts: *Introduction (a guide to using Terror) *General info (standard for wads) *Play information (standard) Please take the time to at least read the introduction, which contains some important information. ... Terror is a new level for Doom2 players to try their luck at. ... The DeHacked file] DO NOT DISTRIBUTE THE FILE TERR.EXE IN ANY FORM! ... Using Terror] The easiest way to use Terror is to unzip the file TERROR.ZIP and copy all the files into your Doom2 directory. ...

... Class . Use . ... Packages that use ImageStatistics . ... Returns an ImageStatistics object generated using the specified measurement options and histogram bin count. ... Returns an ImageStatistics object generated using the specified measurement options, histogram bin count and histogram range. ... Draws the histogram using the specified title and ImageStatistics. ... ParticleAnalyzer. drawParticle ( ImageProcessor drawIP, Roi roi, ImageStatistics stats, ImageProcessor mask) . ... class . ...

... Spider scans ( heiles calibration scans ) were taken with alfa on 02nov09 using beam 0 and 03nov09 using beams 0,2,3,4,5 to test its performance. ... Page 5: Pointing error. beam 2 had large za errors. beam 3 had large az errors. ... Plot the rms error and mean error for these newly computed series. ... Plots showing the pointing error vs rotation angle offset (.ps) ( .pdf ): . ... rotating by + 2 degrees reduces the non beam 0 rms from 18.7 to 14.8 asecs. rms Error asecs . mean error asecs . ...

SPICE system is a data system built by Navigation Ancillary Information Facility (NAIF) , acting under the directions of NASA's Office of Space Science, to assist scientists in planning and interpreting scientific observations from space borne instruments. ... Scientists in many countries may be counted as SPICE customers. In addition to providing SPICE technology to NASA and international space missions the NAIF Group serves as the Ancillary Data Node of NASA's Planetary Data System . ...

Next: Case A: Up: No Title Previous: Introduction . Let us assume that two neutron stars with masses and are merging. The following state of the after-merging object is determined by the ratio of the resulting total mass and the Oppenheimer-Volkoff limit. ... Here and below we interpret the Oppenheimer-Volkoff limit not as the standard value derived for the cold equation of state of baryonic matter for a non-rotating neutron star, but as a modified one. ...

Asteroids, Comets, Meteors (2008) 8010.pdf SPECTRAL SIGNS OF CARBONACEOUS CHONDRITIC MATERIAL ON (21) LUTETIA V.V. Busarev, Sternberg Astronomical Institute (SAI), Moscow University, Universitetskij pr., ... We have discovered considerable variations in the continuum slope and shape of the visible-range reflectance spectra of the asteroid with rotation in November 2004 (4/5, 5/6 and 7/8) and March 2006 (3/4). ... Resulting normalized (at 0.55 m) and smoothed reflectance spectra are shown in Fig. ...

Shakht N.A., A.A.Afanas'eva, D.L. Gorshanov, E. V.Poliakow (Pulkovo Observatory, Russia): Title: Long-term photographic observations for selected objects of Pulkovo program: measurements and results. Abstract: The selected objects, observed at Pulkovo observatory during long time period have been of intense interest among astronomers, and now they are the most important aims for space investigations. ... Now we believe, that they also are interesting for observation during space mission Gaia. ...

... Reconstruction of peculiar velocities of galaxies from large-scale redshift catalogues provides an exemplary application of optimal transport. ... U Frisch, S. Matarrese, R. Mohayaee, A. Sobolevsky, A reconstruction of the initial conditions of the Universe by optimal mass transportation , Nature, 417 (2002) 260-262 ( arXiv:astro-ph/0109483 ) . ... R. Mohayaee, A. Sobolevskii, The Monge Amp re Kantorovich approach to reconstruction in cosmology , Physica D (2008) accepted ( arXiv:0712.2561 ) . ...