University Satellites and . Space Science Education . ... Two micro-spacecraft constellation with solar sails partially compensating the solar gravity allow their placement in the points along the Sun-Earth line behind the standard L1 point, i.e. further out from the Earth and closer to the Sun. The distances of the placement from the Earth and the base distances between such satellites depend on the ratios of their mass to the sail area. ...

... 4 .D.Dolgov (INFN, Ferrara, Italy) STOCHASTIC BACKGROUND GRAVITATIONAL WAVES FORM PRIMORDIAL BLACK HOLES OF G.Tsarevsky (PRAO ASC LPI) PROJECT "RADIOASTRON" AND THE FUTURE OF SPACE RADIOASTRONOMY V.N.Melnikov (VNIIMS, Moscow) SCALAR FIELDS AND MULTIDIMENSIONAL MODELS IN GRAVITY AND COSMOLOGY Wednesday, 24.08.2011 Cosmology, Gravitation and High Energy Physics Conference hall "Sovinyon" 09.00 ? ... 8 Section 2. Astrophysics University Recreation Centre "Chernomorka" (2 ) Tuesday, 23.08.2011 14.30 ? ...

... The described algorithm is suitable for measurements of complex images of stars. ... a) the zero-based number of stars in the complex (multicentric) image, . b) set of preliminary coordinates - x i , y i , for all stars, index i is number of a star, . ... i - index of a star in the complex image; . ... These parameters are calculated by a nonlinear method of a least squares.The main output parameters of this algorithm are x i , y i ; where the index i is number of a star in the multicentric image. ...

. Comment on J1842+7946 . Comparing the brightnesses of the two main features seen in our 5 GHz image with higher frequency VLBI images available in the literature (at 8.4 GHz from the USNO database and at 15 GHz by Kellermann et al. (1998)), one can conclude that the NW component has a steeper spectrum since the SE one becomes relatively stronger as the observing frequency increases. VLBApls home page . Last modified: 16 Oct 2000

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 . ...

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . ... SSRT - Receiving systems . The SSRT has two independent receiving systems for recording solar observational data, and several ancillary receivers for checking, setting up and adjusting the instrument. The base receiving systen is a multichannel filter receiver for a simultaneous recording in 180 channels with the 500 kHz band each, adjusted at steps of about 600 kHz. ... Channel's band . ...

The first persistent Web agent that we have created on Actor Prolog is a program that collects information about research groups that develop Prolog and projects in the field of logic programming. The agent looks through a given list of Web sites and calculates some attributes of the sites: the date of recent modification, total size, the number of figures, the number of outside links, the number of error links, the number of given keywords, etc. ... http://www.cplire.ru/Lab144/space/prolog.html . ...

... Spacecraft that will search for planetary systems around 40 million stars and observe the largest explosions in the universe have been chosen as the next two missions in NASA's medium-class Explorer (MIDEX) program. ... The first mission, to be launched in 2003, is the Swift Gamma Ray Burst Explorer, a three-telescope space observatory for studying gamma ray bursts. ... During its three-year mission, Swift will also survey the sky for new black holes and other sources of cosmic gamma rays. ...

... Сегодня: 10 апреля 2016 г. Идея создания космического аппарата, который сможет проверить правильность положений теории относительности Эйнштейна об искривлении пространства-времени в поле тяготения массивных тел, была выдвинута еще в конце 1950-х годов, когда начали запускать на околоземные орбиты первые спутники. ... Зонд Gravity наконец-то отправился проверять правильность теории относительности Эйнштейна . ...

... запланированная на 2011 год программа изучения гравитационного поля и внутреннего строения Луны космическими аппаратами. ... Гравитационная карта Луны, сделанная космическим аппаратом Lunar Prospector в 1998-1999 годах . Эта миссия подобна ранее начатому проекту Gravity Recovery and Climate Experiment, изучавшему гравитационное поле Земли. ... 1М (космический аппарат) . ... 2МВ (космический аппарат) . ... Gravity Recovery and Interior Laboratory . ... Союз (космический корабль) . Союз 7К-Л1 . ...

... Spherical aberration, coma, and astigmatism are also easily observed using the star test. ... Off-axis images are complex. ... Fig. ... Diffraction by a circular aperture as a function of defocus for no aberration Airy Disk 1 wave defocus Less than 1 wave defocus Fig. ... Diffraction by a circular aperture as a function of defocus for third-order spherical aberration Paraxial Focus Small distance inside paraxial focus Moderate distance from marginal focus Immediate neighborhood of marginal focus Fig...

... Быстрое вращение вытягивает конвективные ячейки в атмосфере планеты в длинные облачные ленты, делая диск Юпитера характерно полосатым. ... Зонд Галилео, опускаясь в верхней атмосфере Юпитера, на уровнях давлений, меньших 3.8 атм., смог получить только верхний предел на количество водяного пара, равный 7 * 10 -7 . ... Температурный минимум (тропопауза) в атмосфере Юпитера расположена на уровне давления 175 миллибар (0.175 атм.) при температуре 109К и высоте 35 км над уровнем давления, равном 1 атм. ...

... 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. ...