Next: Visitors and Seminars Up: Research Previous: M. de Groot, Consultant Contents . ... Zodiacal Cloud . ... The zodiacal cloud is a disc of dust orbiting within the inner planetary system. ... Existing models of the zodiacal cloud have always adopted an equilibrum assumption, in which the input from comet and asteroid disintegration balances the output from collisional grinding between the dust particles and their removal by the Poynting-Robertson effect. ...

... A1368 Date Received: 1999-Oct-04 10:06:54 Technical Page Proposal Type: Regular General Category: Astronomy Sub-Category: Spectroscopy Observation Category: Extragalactic Total Time Requested: 20 hr Hours Proposal Title: PKS1004+13: The Rosetta Stone for BAL Quasars? ABSTRACT: It is now recognized that the material producing broad absorption lines (BAL) in some quasars is in fact present in essentially all such objects, only orientation restricting the observed occurrences to 15%. ...

Общая Астрономическая Конференция > Форумы общей направленности > Любые вопросы от новичков . аберрации призмы . ... Поиск . Сообщения за день . ... Сообщений: 264 . ... Простая прямоугольная призма работает как диагональное зеркало.Могут ли в ней быть хроматические аберрации при наклоне лучей света или неравномерность преломления на входе компенсируется такой же неравномерностью на выходе? . ... Quasar . ... Отправить личное сообщение для Quasar . Найти еще сообщения от Quasar . ...

... Up: Data Pipelines . ... 172, Astronomical Data Analysis Software and Systems VIII, eds. D. M. Mehringer, R. L. Plante, & D. A. Roberts (San Francisco: ASP), 207 . ... Fully automated software running on a Linux Pentium II reduces and analyses the data faster than it is acquired. ... The QUEST collaboration (Snyder 1998) is obtaining broad bandpass (4000 - 9500?), intermediate dispersion (25 ?/arcsec at H ) slitless spectroscopy covering 300 deg 2 per night to . ...

... astro-ph . ... Whitespace-separated words are treated as AND ed. Show 10 50 100 articles per page in Full Compact mode . ... Quasar Variability in the Framework of Poissonian Models . ... It is shown that in this very general framework the well established anti-correlation between variability amplitude and wavelength can only be understood as an effect of an underlying spectral component which remains stable on long time-scales, and is redder than the variable component. ...

An X-ray/radio sample of Active Galactic Nuclei Nuria Fonseca Bonilla Tutor: Stefano Bianchi Matteo Guainazzi An X-ray/radio sample of Active Galactic Nuclei Brief introduction Results Conclusions An X-ray/radio sample of Active Galactic Nuclei 1. ... Classification of AGN radio loud (powerful jets): e.g: radio galaxies, quasars, blazars... radio quiet radio quiet quasars (RQQs) Veron `06: MABS < -23 Seyfert Veron `06: MABS > -23 An X-ray/radio sample of Active Galactic Nuclei 3. ...

Next: References Up: On the problem of Previous: The spectrograph design and . Figure: Fragment of the echelle spectrum of protoplanetary nebula RAFGL 618 in H . In Fig. 3 are shown fragments of the echelle spectra of the quasar S5 0014+81 ( ) obtained with the PF echelle spectrograph within the frames of the programme of study of absorption spectra of bright quasars (authors of the programme are D.A.Varshalovich and A.V.Ivanchik). ...

Research staff . ... Institute of Applied Astronomy . ... Beskrovnaya N.A. beskr@pulkovo.spb.su . Pulkovo Astronomical Observatory . ... Astronomical Institute of SPbSU . ... A.F.Ioffe Institute of Physics and Technology . ... Yudin R.V. ruslan@pulkovo.spb.su . ...

27 декабря 2001 . ... About dark matter (news) . ... Evolutionary tracks of hybrid inflation . report on the diploma work; supervisor - E.V. Mikheeva) . E.V. Mikheeva . New inflation comes back? (review) . 6 сентября 2001 . A. Soloviev, E.V. Mikheeva . New candidats for gravitationally lensed quasars (for RadioAstron mission) . ... 12 июля 2001 . ... back to ASC home page ...

. This is a new popup window - close it when you are done . Submitted by Mario Motta M.D. on 04/13/2010 19:57:52 . Quasar 3C273 . "only" about 3 billion light years away, note the jet lower right from the quasar, not an artifact, that is the jet from the black hole. Logon to post a follow-up comment or review comments from others . Copyright (c) Amateur Telescope Makers of Boston, Inc. About Us Contact Us

... Future seminars . P a s t seminars . Seminar council . Heating of interstellar medium by X-ray radiation from quasars, . statistical properties of active galactic nuclei based on hard X-ray surveys " . based on doctor's thesis) . ... Sazonov (IKI) . ... Based on the second half of the thesis, the following questions will be addressed: . ... A catalog of active galactic nuclei (AGN) selected by flux in the X-ray range 3-20 keV is created. ...

... We present preliminary results from two programs to image the host galaxies of radio-quiet quasars in 1.6 micron light using NICMOS camera 2 on HST. The high redshift program consists of QSOs covering the redshift range 0.8 < z < 4.4 and a range of QSO luminosities. Of the six objects for which data have been obtained the results range from no host galaxy detected, to an obvious galaxy with an interacting companion, to a possible high redshift galaxy cluster. ...

The Variable Gamma-Ray Source 2CG 135+01 ApJ, 497:L89-L91, 1998 7 h gamma AGN variability . gamma-radio-AGN-variability ADS query . ... Model for the High-Energy Emission from Blazars 1993ApJ.. ... Possible Production of High-Energy Gamma Rays from Proton Acceleration in the Extragalactic Radio Source Markarian 501 astro-ph/9803241 K.Mannheim . ... A theoretical unifying scheme for gamma-ray bright blazars astro-ph/9807317 G. Ghisellini, A. Celotti, G. Fossati, L. Maraschi, A. Comastri . ...

. VLBI Laboratory . VLBI topics: . AGN . Quasars . polarisation mapping . maser sources (OH, H 2 O, SiO) . interstellar scattering . radio supernova remnants in extragalaxies . intraday variability . space VLBI . Other fields: . methods and equipment of VLBI . interferometry observations . Pushchino VLBI station : . coordinates: . telescope RT-22(in Russian) . technical data . site of RT22(in Russian) . Webmaster Subaev I.A. Last update 23.Jule.2002.

... технический университет . ... e-mail: alena_k@temcom.ru . ... Государственный астрономический институт . ... г.Москва . т. (095) 939-50-24 . e-mail: barkin@sai.msu.ru . ... Институт прикладной астрономии РАН . ... т. (812) 272-4023 (сл) . т. (812) 247-12-59 (д) . e-mail: batrakov@quasar.ipa.nw.ru . ... Волжский гуманитарный институт ВолГУ . ... e-mail: batkhin@volsu.ru . ... Институт прикладной математики . ... Институт проблем механики РАН . ... Институт Космических Исследований РАН . ...

... Other direction of my work is collection and systematization of all information - parameters and identification charts - concerning close binary systems on late evolutionary stages - the AM Her stars (polars), intermediate polars, symbiotic stars, double white dwarfs and binary pulsars, SU UMa stars. The results of this work was published in Gordon and Breach Publishers ( Cherepashchuk~A.M., Katysheva~N.A., Khruzina~T.S., Shugarov~S.Yu. Catalog of Highly Evolved Close Binary Stars. ...

... Check out his Eternity TC project at http://doomnation.com/teameternity ================================================================ * Play Information * Game : DOOM II Episode and Level # : MAP01 Single Player : Yes Cooperative 2-4 Player : Yes Deathmatch 2-4 Player : Yes Difficulty Settings : Yes New Sounds : No New Graphics : Yes New Music : Yes Demos Replaced : None * Construction * Base : New level from scratch. ... Build Time : A couple weeks. ...

... PhD 1974 in Astrophysics; . Doctoral Degree 1984 in Astrophysics . ... Head of the Department of Theoretical Astrophysics . Department Number: . 01 (Theoretical Astrophysics) . ... Astro Space Center . ... Telephone Number: . 7(495) 333 3366 . FAX Number: . 7(495) 333 2378 . ... lukash@asc.rssi.ru . ...

. KRWG Public Showing of "Capturing Heaven in a Box:" January 31, 2004 . The SDSS project was debuted to a standing room only crowd, with Nancy Chanover and Xiaohui Fan giving colloquiums on spectroscopy and quasars. A long afternoon followed by a wonderful celebration.

... 5-GHz total flux density . ... VLBApls image at 5 GHz . color gif | contour gif | ... Correlated flux density (Jy) vs. projected baseline length plot . gif | ... flux density (Jy) . EW position (mas) . ... major axis (mas) . minor axis (mas) . position angle ( ) . ... 0.0 . ... 2.3 and/or 8.4 GHz: VLBI images are available in the USNO Radio Reference Frame Image Database (RRFID, Fey & Charlot 2000, ApJS 128, 17) . ... 2000), ApJS, 131, 95-183 . VLBApls home page . ...