spaceweb@oulu.fi - last update: 18 February 1997, 1100 UT (RR) . Black aurora is a lack of auroral emission in a small, well-defined region within an otherwise uniform, diffuse background or within auroras exhibiting a degree of shear behaviour intermediate between that of diffuse and discrete aurora (e.g., Davis, 1978). It appears to be a common feature of the midnight sector during late substorm recovery phase (Trondsen and Cogger, 1997). ... 30 , 371-380, 1978. ... 102 , 363-378, 1997. ...

pro prvni_event,event COMMON profily,profil1,profil2 COMMON baze2,prvnilab,prvnidraw,prvnibut, prvni1 ,prvni COMMON pozice,pozice1,pozice2 COMMON kolik,pocet2 COMMON data,kliny, obrazek COMMON uloz, cesta COMMON uloz2,obrazek2 COMMON novy,prvniposlab ; COMMON velikost,s1,s2 widget_control ,event.id,get_ uvalue = uvalue case uvalue of 'CLICK1': ...

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: Commons, K. 1 article(s) in total . ... Adami, C.. ... Merrelli, Aronne. ... Astronet | SAI MSU . ...

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An Ancient Universe: How Astronomers Know the Vast Scale of Cosmic Time . ... a) Changes in the Solar System - Continued . The Cratered Face of the Moon Impact craters on the Earth, Moon, and other worlds are formed by the bombardment of chunks of rock and ice from space. ... So we conclude that the solar system experienced many more impacts in the distant past than today. ... The Changing Universe - Changes in the Solar System - Changes in Stars - Changes in the Universe | ...

... The HH flow associated with young stellar object HL Tau has an exciting history and even until now the origin of some its features is not clear yet. ... Knotty structures of Herbig-Haro jets are common phenomena and knowing the origin of such structures is essential for understanding the processes of jet formation. ... In the flow detected compact knots with high (-150 km/s) and bow shape structures in front of those, with low radial velocities (-50 km/s). ...

... Главная . ... Новости . ... Проекты . Любителям астрономии . Проект ISON . ... Подробнее . ... Категория: Новости проекта ISON . ... Метки: Космический мусор ,љ Астероиды ,љ Гамма-всплески ,љ Любителям астрономии ,љ Кометы љ . ... Метки: Космический мусор ,љ Астероиды ,љ Любителям астрономии љ . ... Новости обсерваторий проекта] - Обсерватория Кубанского государственного университета от Иванов А - 09.04.2016 11:08:49 . ... 1999-2013 Copyright "Астрономия и Телескопостроение" . ...

... In the 1800s it was already evident that the Earth's magnetic field was involved: auroral rays seemed to follow the Earth's magnetic field lines, and the frequency with which aurora was observed depended on the distance from the magnetic pole, not from the geographic one. ... That is the beginning of the ionosphere , a layer with enough free electrons (and ions) to play an important role in radio communications. ... The simplest atom is the one of hydrogen, with just one electron. ...

... You can use the Starlock Utility program to update your Starlock firmware. ... L X800 Telescope with Autostar II handbox Starlock wit h con necting cable Meade #507 con necting cable Meade RS232/USB adapter (if needed) Computer with Starlock Utility program Updated Starlock firmware Installation From the Meade website, download the Starlock firmware update to the computer desktop. ... If you have changed serial ports, click on the "Reset Con nection " button in the utility program. ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualit†йs . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Exposition des navettes : la Nasa a choisi . ... La plus ancienne navette, et celle qui a le plus voyag†й dans l'espace , sera pr†йsent†йe dans une annexe du mus†йe (le Steven Udvar-Hazy Center, en Virginie), qui expose actuellement Enterprise. ...

The Extended Soft Approximation for Spherical Particles A.Y. Perelman St.Petersburg State Forest Technical Academy and N.V. Voshchinnikov Astronomy Department and Sobolev Astronomical Institute, St.Petersburg University Abstract The soft approximation (SA) gives the possibility to obtain the different optical characteristics of particles from the common point of view [1]. As for the Mie theory, they are expressed in terms of the scattering coefficients $a_n$ and $b_n$. ...

Gravitational four-fermion interaction and dynamics of the early Universe I.B. Khriplovich, A.S. Rudenko Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia October 2013 According to common beliefs, present expansion of Universe is result of Big Bang. Quite popular idea is that this expansion had been preceded by compression with subsequent Big Bounce. ... Its energy density is = n4/3, is numerical factor, n1/3 is typical energy per particle. ... Solution of FLRW equations. ...

IVS name -- the 8 letters long name of the source adopted by the International VLBI Service for Geodesy and Astrometry . This is either IAU B1950 name of a common name.

***** ** * * * * * * C **** ****** **** **** ** *** *** * * * C C C PROGRAM GEOS C PARAMETER (MX0=200,MY0=1,MZ0=20,MCQ=1,MTR=4) COMMON /BQG/BQGM(12) /BSQ/BSQM(12) COMMON /BL0/NS,NX,NY,NZ,DX,DY,DZ,DT,T,DTF C /BLU/NZP,NPR,NST,NED,NTH,EVK,ETK,EDT,DTM,EEQ C /BPF/IPR,JPR,KPR, MPR ,LPR,MST,TPR,HPR,TZP,HZP C /BMR/NMR,KMR,LMR,MMR,XMR,YMR,ZMR,SMR(3,10) C /BLP/KPP,NPP,WAP,WAT,WAV(3),EET,EEV,EEP,EPS C /BLC/HL0,HLT ... TTT+CCC+X+Y+Z+T) RETURN;END FUNCTION FUNSV(TTT,RHH,CQ,X,Y,Z) ! ...

... What's new . ... The new version of the General Catalogue of Variable Stars (GCVS4.2) revised taking into account the new data accumulated since the 4th GCVS edition for the constellations: Canis Minor, Capricornus The new version of the GCVS ! ... The new version of the General Catalogue of Variable Stars (GCVS4.2) revised taking into account the new data accumulated since the 4th GCVS edition for the constellations: Apus, Cancer, Canes Venatici and Canis Major The new version of the GCVS ! ...

The best way to explain what the logical actors are, is to consider an example. ... An example of logical actors (the Actors.A program). ... The principle of logical actors. -- ------------------------------------------- project : (( 'Main' )) ------------------------------------------- class 'Main' specializing 'Dialog': -- identifier = "input" ; x = 27 ; y = 8 ; -- i; j; -- w1 = ( 'TextPage', value_1=i, value_2=j, text_color='White', background_color='Red', x= 9 , y= 4 ) ; . ...

... Home Lectures Lecture Series 2015-2016 . ... Lecture Series 2014-2015 . ... Beyond New York City . ... The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the public. ... Amateur Astronomer Association is pleased to announce we will be offering select, limited reserved seating for current AAA members for the Friday, January 8, 2015 AAA Lecture entitled Robert Nemiroff ?2015 Astronomy Picture of the Day?. ...

... The NOTE element is designed for use as admonishments such as notes, cautions or warnings, as commonly used in technical documentation. The CLASS attribute specifies the type of the element and is typically associated with different graphics such as a road traffic warning sign. ... The class names: NOTE, CAUTION and WARNING are recommended for standard admonishments. In the absence of the CLASS attribute, a NOTE element is typically rendered indented, without an accompanying graphic. ...

Latex macros for the proceedings Download this document . INSTRUCTIONS TO AUTHORS . ... LATEX MACROS FOR THE PROCEEDINGS . ... def \noi {\noindent} . ... def \aa {{\it Astron. ... vspace*{1.2cm} . noi {\Large TITLE} . ... noi \hspace*{1.5cm} AUTHOR . noi \hspace*{1.5cm} Name of the Institution . noi \hspace*{1.5cm} Address of the Institution . noi \hspace*{1.5cm} e-mail: author@Institution . ... noi {\large ABSTRACT.} Abstract of 150 words maximum. \vspace*{1.5cm} . ...

Lessons Learned By One Old Timer Authors: Peter Bealo and Charlie McDonald Project Astro-Boston and the Amateur T elescope Makers of Boston I've been an amateur astronomer for over 25 years now, having been bitten by the bug the first time I viewed Saturn at a public star party. By the time I was 15 I too had begun participating in public star parties with my local astronomy club. ... If its a multi-class star party, involve the PTA from the start, they can help with refreshments, etc. ...