... A Backward Sunspot and the New Solar Cycle . ... Credit: MDI , SOHO , ESA , NASA Explanation: Why is sunspot 905 backwards? Perhaps it is a key marker for the beginning of a new magnetic cycle on our Sun . Every 11 years, our Sun goes through a magnetic cycle , at the end of which its overall magnetic orientation is reversed. ... Just now, the Sun is near Solar Minimum , and likely to start a long progression toward the most active time, called Solar Maximum , in about 5.5 years. ...

... 2006 August 30 . A Backward Sunspot and the New Solar Cycle . Credit: MDI , SOHO , ESA , NASA . Explanation: Why is sunspot 905 backwards? Perhaps it is a key marker for the beginning of a new magnetic cycle on our Sun . ... An 11-year solar cycle has been observed for hundreds of years by noting peaks and valleys in the average number of sunspots . ... Solar astronomers predict that the coming Solar Maximum will be unusually active. ... About APOD | ... NASA Official: Jay Norris. ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... 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 La com†иte Chury toujours active . ... Cette photo prise le 1 er mars 2016, †а seulement 26,7 km de distance, met en †йvidence un beau jet de mati†иre qui s'†йchappe en bordure des r†йgions Imhotep et Bes, sur le lobe de l'h†йmisph†иre Sud de la com†иte. ... Etat du ciel ...

... SAO RAN RATAN-600 EXCURSIONS 40 YEARS of R/T REFERENCES . ... GPS radio sources . ... Thursday, April 30, 10-00 . ... Friday, December 19, 10-30 . ... N. Bursov, V. Chaykin, A. Storozhenko "Preliminary results of RATAN-600 antenna measurements with the help of the geostationary Satellite Turksat 2A/3A". ... The basic results. ... Information-analytical system of estimating the parameters of radio sources in continuum with the RATAN-600 (the message for a conference, IPA St. Petersburg). ......

... Meetings . ... List of all meetings from first one and up to present. Agenda of the session: eng version . ... Agenda of the meeting: eng version . Summary of the meeting: eng version . ... List of RISC members . ... List of participants . ... Agenda of the meeting: eng / rus version . ... Formal minutes: eng version . ... Lists of participants: eng / rus version . Formal minutes: eng / rus version . ... Agenda of the meeting & List of participants . ... Agenda of RISC's meeting . ...

... Sun images . ... Sun flares . ... Active areas . August : 2011 . ... The following regions with sunspots can be now observed on the Sun's surface . ... Group length (in degrees) . ... N17 W69 . ... Beta . ... Coordinates and other characteristics of active regions are issued for August 27, 2011 00:31 UT The following H-alpha plages without spots can be currently observed on the Sun's surface . ... Coordinates and other characteristics of active regions are issued for August 27, 2011 00:31 UT . ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Governance overview . Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Our people overview . ... Parkes radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Orientation and Evolutionary Effects in Active Galactic Nuclei . ... In this invited review, I present observational results of Active Galactic Nuclei that my colleagues and I have recently obtained. ...

. To russian version . This work is dedicated to memory of . G.F. Vyalshin (1931-1999), . the first principal of the project, . who made an overwhelming part of observations.

... Invited Review Paper. ... In radio-loud AGN, bipolar jets emanating from the nucleus emit radio through gamma-ray light that is relativistically beamed along the jet axes. ... We outline the two most plausible unified schemes for radio-loud AGN, one linking the high-luminosity sources (quasars and luminous radio galaxies) and one the low-luminosity sources (BL~Lac objects and less luminous radio galaxies). ... Table of contents (Postscript file, 38Kb) . ... Postscript versions of all the figures: . ...

... This thread contains a step-by-step recipe to extract EPIC (pn will be used as an example) light-curves of a point-like source, starting from a calibrated, concatenated event list (either produced with epproc or available as PPS product; it will bear the name: PN.fits in this thread). The content of this thread is the same as Extraction of a X-ray light curve for a point-like source (command-line version). ... in the lccorr GUI window (see Fig.7) define at least the following widgets: . ...