... The hard gamma radiation from AGN is produced most probably in the relativistic jets observed in the considerable part of these objects. In the center of AGN (and may be of all other galaxies) there is a supermassive black hole surrounded by the accretion disk, which is the source of the energy in these objects. ... The problem of particle acceleration in the AGN jets is very important: the time of the electron energy losses in the jets is usually much less than their life time. ... next page . ...

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... Spectra obtained with the 6-m telescope of SAO RAS are used along with archival data from Spitzer and several ground-based telescopes to infer a strength of PAH emission, age, properties of the UV radiation field, and metallicity of studied HII complexes. Physical properties (age, radiation field parameters, metallicity) are related to the F 8 /F 24 ratio used as a proxy for the PAH abundance in order to reveal factors that may influence the PAH evolution in HII complexes. ... Projects | ...

... Практическая астрономия ? Астрономия и компьютеры (Модераторы: Deimos , Ed_Vazhorov ) ? Some Autostar Hard Reset ? Proc.Trap 2) error ! ... Сообщений: 654 . Рейтинг: +4/-1 . ... Компьютер пульт не видит. ... Записан . ... http://www.weasner.com/etx/autostar/2005/reset.html - вот тут что-то есть, но я не разобрался . ... На случай если у кого окажутся похожие проблемы поясню нюансы. 1. http://www.weasner.com/etx/autostar/2005/reset.html - это результата на сброс ошибки не дает. ...

... SS433 is a close binary system, one star is a supergiant, a second one is a black hole. ... Even a black hole cannot accept such an enormous mass flux, a supercritical accretion disk appears, all the excess gas glows up to several tens of thousands degrees and is ejected off the disk with enormous velocities. ... SAO researchers have found an evidence of the supercritical accretion onto a black hole in SS433, which follows from a brightness variability of the SS433 disk. ...

... Our Galaxy . ... Universe . ... One of the Hubble Space TelescopeтАЩs goals was to accurately observe Cepheids in the most distant galaxies known (we knew they were far away, the problem was saying just how far). ... This work is becoming ever more refined; in January this year astronomers revealed that they had identified the farthest galaxy yet seen in a Hubble image. ... Thanks to the Hubble Space TelescopeтАЩs superb observations we can say that the universe is 13.75 billion years old. ...

Andrey Kravtsov . ... Andrey Tatarnikov . Sternberg Astronomical Institute . ... Astronomical Institute (Ondrejov, Czech Republic) . ... Paris-Meudon-NanГay Observatory . NMSU Astronomy Department . Institute of Theoretical Astrophysics (Norway) . Big Bear Solar Observatory . ... SOHO - The Solar and Heliospheric Observatory . Ulysses Project - ESA page . ... Abstracts from Astronomy Astrophysics . ... Solar Astronomy . ... Astronomy astrophysics preprints abstracts . ...

... stars . ... Finding twin Earths is harder than we thought . Astronomers need a handful of transits to decipher a planet's atmosphere and possibly confirm the existence of the first twin Earth. ... If an earthlike world is nearby, though, then by adding observations of a number of transits, astronomers should be able to detect biomarkers like methane or ozone. ... They are also cooler and dimmer than the Sun, as well as smaller, which makes finding an earthlike planet transiting an M star easier. ...

... Bad Astronomy . ... Bad Astronomy: The North Star, Polaris, is a very bright star. Good Astronomy: Polaris is a middling-bright star, easily missed. ... He said it was close to Polaris, the North Star, but he also said it was in the East. ... It's natural, I suppose, to think that such an important star should be bright, but really, that's a conceit, like thinking that the Earth is at the center of the Universe. If more people knew just why Polaris is the North Star, this Bad Idea would stop. ...

... Director of the RAS ISR . RAS Academician . ... Astrophysics module Kvant of the orbital complex Mir launched in 1987 contains the largest on the station complex of the scientific equipment named the orbital observatory Roentgen. Observatory Roentgen consists of 4 X-ray telescopes, jointly exceeding the range of energies from 2 to 800 keV. ... Among the most significant results that were received in the observatory Roentgen are: . ... measurement of the periods of 9 X-ray pulsars; . ...

... The hexagonal (rhombohedral) form of aluminum oxide is variously called alpha-Al 2 O 3 , alumina (usually applied to the non-fully-dense polycrystalline ceramic), corundum (mineral name), ruby (red [chromium containing] corundum), or sapphire (blue corundum; also frequently used to denote the pure, synthetic crystal). ... The high mechenical and dielectric strength of aluminum oxide make it a desirable laser host material. ...

. Russian Version [MS-Win] . [ News ] . [ Satellite data ] . [ SMIS ] . [ ] . IBM PC compatible personal computer with the following minimal required technical features: . CPU: 80386 and higher . not less than 4 MBytes memory . not less than 100 MBytes hard drive . at least Super VGA (256 colors) video system . The interface card complies with ISA standards and can be plugged into any IBM-compatible personal computer. Back to SMIS Home Page .

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 . Normalized to: Stam, M. 1 article(s) in total . 3 co-authors. Median position in authors list is 3,0 . Co-author(s): . ... Harding, Alice K.. ... Astronet | SAI MSU . ...

TESTING . ... The ground experimental development of complex N1-L3 included: . ... testing of mechanical and pyrotechnic separation and docking systems, pneudraulic systems of LV stages and system L3, instruments and equipment of control and measuring systems, power systems, fixture, life support systems, high temperature and thermal-vacuum tests, investigation of gas-dynamic processes during launch and stage separation; . ... The tests included: . ... Official WEB-site of S.P.Korolev RSC Energia . ...

... This means it is the end-user's responsibility to insure that the telescope does not move into a configuration that may damage it, or damage accessories attached to it. ... This driver does take these limits into account, and attempts to keep the telescope away from the pier. ... If you are using this system to control an unattended telescope, I strongly recommend that you add mechanical switches in series with the DC supply on the motor drive. ...

R N J = = a u u = = d m l = = i b y = ==== oAst er 4 23, ==== ============== ron Newsletter 2011 ============== The Space Radio Telescope is unfolded! ... With best regards, Nikolai Kardashev (nkardash@asc.rssi.ru) Yuri Kovalev (yyk@asc.rssi.ru) To subscribe or un-subscribe to the Newsletter, use: http://asc-lebedev.ru/index2.php?engdep=22 ...

... Authors: Remco C. E. van den Bosch et al. arxiv:1211.2656 Эмиссионные линии в жестком рентгене от распада Ti-44 в остатке сверхновой 1987A (Hard X-ray emission lines from the decay of Ti-44 in the remnant of supernova 1987A) . ... Authors: Ian A. Crawford . ... Authors: Jack O. Burns et al. arxiv:1211.0310 Большой обзорный телескоп: коллаборация по изучению темной энергии (Large Synoptic Survey Telescope: Dark Energy Science Collaboration) . Authors: LSST Dark Energy Science Collaboration . ...

. This is a new popup window - close it when you are done . Submitted by Paul Valleli on 01/16/2007 15:56:22 . 107-inch Reflector - the one that a deranged optician shot seven times . The 45 Magnum spalled 7-inch diameter craters in the surface - hardly any light loss. just were painted black. Logon to post a follow-up comment or review comments from others . Copyright (c) Amateur Telescope Makers of Boston, Inc. About Us Contact Us

Р?С?Р?РеР? ... Р?Р?С?РњР?С? David A. Anhalt Р?Р?С?С?Р?С?Р?Р? Р?. ... Р?РеР?С?Р?Р?С? Charles H. Bixler Р?Р?Р?Р?Р?С? Р?. Р?Р?Р?Р? James M. Boyle РљР?Р?Р?С?С? Р?. Р?С?РеС?С?РеРњР?С?Р?Р? Robert N. Christiansen Р?РњС?Р?РеР?Р? Р?. ... Р?РеР?С? Robert C. Hicks Jr. ... Р?С?Р?Р?С? Alan D. Hoover Р?С?Р?Р?Р?С?РеР? ... Р?РеР?Р?Р? Robert J. Kimble Jr. ... Р?Р?РеРћР?Р?Р? James W. Loiselle РљР?Р?Р?С?С? Р?РњР?Р?РњР?Р?РеР? Robert MacMullin Р?РњР?РеС?Р? Р?. ... Р?Р?РеР?Ре Randal C. Sweeney РљРеС?РњС?Р? Р?. ...

... Previous: Refining the Guide Star Catalog: Plate Evaluations . Up: Instrument-Specific Software . ... A losslessly compressed version of the Guide Star Catalog has been created by the authors and described in the present paper. ... To help PC users solve the problem of data retrieval, we have created the Guide Star Catalog Data Retrieval Software, or GUIDARES (Malkov & Smirnov 1995). ... The XSKYMAP software is an IDL widget application for retrieval, visualization and hard copy of ZGSC samplings. ...