... A simple Virasoro vertex algebra is rational (and -2 semisimple as well) iff its central charge is of the form c = 1 - 6(pppp ) , where p, p are relatively prime integers, greater than 1 (which are central charges of the so called minimal models). A simple affine vertex algebra Vk (g), attached to a simple Lie algebra g is rational (and semisimple as well) iff its level k is a non-negative integer. ... We call such f an exceptional nilpotent and such k an exceptional level. ...

... This method is based on putting space modules, vehicles and EVA-suit donned cosmonauts in the swimming pool under conditions of neutral buoyancy, indifferent equilibrium and unsupported state. ... You can also dive into the swimming pool with the SCUBA equipment in order to examine the mock-ups of space stations and vehicles and pass a course of rehabilitation in a hyperbaric oxygenation complex. ... Services / Hydrospace: General description Technical description "Orlan" suit Photo gallery Price . ...

... НОВЫЙ РАКЕТА-НОСИТЕЛЬ . NASA планирует с 2015 года использовать новую ракету Ares I. Однако группа аэрокосмических инженеров предлагает иную концепцию корабля, который можно сделать быстрее и дешевле. ... Они разработали альтернативный проект под названием Jupiter Direct 2.0, который непосредственно базируется на испытанных компонентах старых челноков. ... Согласно планам NASA, в ходе лунной экспедиции Ares I должен вывести на орбиту модуль Orion с астронавтами внутри. ...

... The relation between the metallicity of F stars and their loci on the c 1 , diagram is investigated for a semple 2000 galactic-disk F stars having uvby data. ... По данным uvby -фотометрии, для двух тысяч F-звезд диска Галактики изучена связь между их металличностью и положением на диаграмме c 1 , . ... Если считать, что распределение металличности звезд диска в диапазоне lg Z/Z (или [Fe/H]) от -0.5 до +0.3 непрерывно, то Y 0.02. ...

... ADC_Keywords: Galaxy catalogs ; Nonstellar objects Description: NGC 2000.0 is a modern compilation of the New General Catalogue of Nebulae and Clusters of Stars (NGC), the Index Catalogue (IC), and the Second Index Catalogue compiled by J. L. E. Dreyer (1888, 1895, 1908). ... The order of the new catalog is strictly by right ascension, the NGC and IC objects being merged into one machine-readable file. ... The book also contains a table of right ascensions for NGC and IC objects. ...

Comment on J0513-2159 . Our image shows an extension to about 5 mas SE from the brightest feature. The EVN 8 GHz image by Dallacasa et al. (1998), with about five times larger resolution, shows an extension from the brightest feature roughly opposite to our direction. As noted by Dallacasa et al. (1998), the structure detected has a highly inverted spectrum, which, together with the reported variability in the source, could explain the structural disagreement. ...

The direct detection of gravitational waves is one of those events long-expected by physicists that are nevertheless a significant occurrence which excites the world scientific community as if something unexpected has happened. ... Many rumors leaked ahead of the conference, and the fact that something (that is, a signal corresponding to gravitational waves) was discovered by LIGO (Laser Interferometer Gravitational-Wave Observatory) was discussed on the sidelines. ... arXiv:1602.03868 . ...

THE 7-TH G. GAMOW'S ODESSA ASTRONOMICAL SUMMER SCHOOL «Astronomy and beyond: Astrophysics, Radioastronomy, Cosmology and Astrobiology» (Ukraine, Odessa, Chernomorka,7-12 August, 2007) SCIENTIFIC PROGRAM Tuesday, August 7 ­ 5.11, ­ 5.45, ­ 20.20 , ­ 20.55 THE DAY OF ARRIVAL 8.00-22.00. ... OPENING SUMMER SCHOOL MEMORIAL: Lection 1 10.00-10.20. ... LUNCH AND SEA COAST WALK AFTERNOON LECTURE: Cosmology: Lection 6 15.00-15.45. ... HOT COFFEE AND COLD WATER BREAK AFTERNOON SESSION: Cosmology: 17.00-17.20. ...

QUASI PERIODIC ORBITS IN THE VICINITY OF THE SUN- EARTH L2 POINT AND THEIR IMPLEMENTATION IN SPECTR-RG MILLIMETRON MISSIONS I VA N I L I N , A N D R E W T U C H I ... RUSSIAN ACADEMY OF SCIENCES 24th International Symposium on Space Flight Dynamics Laurel, Maryland, 5-9 May, 2014 APPLICATION OF QUASI PERIODIC ORBITS NEAR LIBRATION POINTS ESA space telescope Gaia launched on 19.12.13, direct ... Dynamics and Mission Design near Libration Points - Volume 1. ...

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . ... SSRT - Possibilities of observing . ... Investigations of the SSRT 5.7 GHz radio maps in conjunction with images obtained in other emission ranges, suggested the following conclsions: . ... Solar images obtained in line H a ;(on the left, 16:11 UT, Big Bear observatory) and in the microwave emission (on the right, 04:04 UT, SSRT) 4 march 1997 . ...

... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...