... Other Characteristics of the Sun: Variability of Rotation, Magnetism, Chemical Structure, Planetary System. ... Methods of Solar Magnetic Fields Measuring: Visual, Photografic, Photoelectric. ... Empiric Datas of Magnetic Fields in Photosphere, Chromosphere and Corona. ... Characteristics of Magnetic Field in Balanced Force Tubes by Potential and Forceless Field. ... Phenomenons in Active Region (Magnetic Field, Spots, Torches, Solar Prominences, Flares, Discharges. ... Magnetic Fields in Flares. ...

Geomagnetic storms and substorms are a natural hazard similar to hurricanes, floods etc. ... Solar and geomagnetic activity also probably influences the Earth's climate and human health. ... Under southward directed IMF the Earth's magnetosphere is open to input from the solar wind flow. ... Since practical importance of solar wind measurements was recognized, a number of approaches was developed for prediction of the geomagnetic activity basing on the solar wind data. ...

home education > activities . ... Quick math activity that asks students to calculate scale models of a binary star system with a black hole in it. [h] . ... Students use a radiometer and a light bulb with a dimmer switch to make connections between the temperature, color, and radiation output of a star. ... This demonstration, similar to the above, from the Exploratorium Snack-book of science activities, lets students demonstrate how molecules scatter light and change the colors of the beam. [m,h] . ...

. NStars 3: companion searches --- | --- NStars home . NStars and activity index . NStars home page . INR home page . page by Neill Reid, last updated 25/02/2002

... Plasma sheet is the region of closed field lines in the equatorial magnetotail (however, see also plasmoids ). Plasma sheet is typically divided into plasma sheet proper, or central plasma sheet , and plasma sheet boundary layer (PSBL) , the latter being at higher latitudes adjacent to the tail lobes. ... This is evident both in storms time ring current and substorm time plasma sheet (including late growth and the expansion phases; see, e.g., Daglis et al., ... Res., ... J. Geophys. ...

. XMM Radiation Environment Models and Monitor . Introduction . Representative Orbits . XMM RM – Geographic Coordinates . Magnetospheric Coordinates (B L) . XMM Data in [B,L] Coordinates . XMM RM – [R, ?] Coordinates . XMM RM Data in L-localtime – No External B Model . XMM RM in L-LocalTime . Solar Proton Contribution . Effects to be Considered . Conclusions . Problems Encountered . Other Points/ Future Activities . Author: Hugh Evans . Email: hevans@estec.esa.nl@estec.esa.nl

Next: The Nuclear Region: HI Up: The Relation between the Previous: The Relation between the . In this lecture I will discuss some aspects of the relation between the large-scale gas dynamics, nuclear kinematics, and activity in spiral galaxies. ... The best tracer for the overall gas distribution and kinematics in galaxies is the 21-cm emission line of the neutral hydrogen atom (H I ). ... Note that both H I emission (solid lines) and absorption (dotted lines) cover about the same velocity range. ...

... The earliest X--ray observations were carried out in the mid--1970s. X--ray luminosities of order L erg/sec were detected in the 2-11 keV range in the direction of the Orion star forming region. ... These observations showed that the O and B stars were the brightest X--ray sources, and that TTs were also associated with emission. Feigelson and Kriss (1981) showed that some of the X--ray sources were associated with PMS stars which had not been previously detected which H surveys. ...

Next: Spectral observations and data Up: The Hamburg/SAO Survey for Previous: The Hamburg/SAO Survey for . Objective prism surveys for emission-line galaxies (ELGs) are the main source of large samples of both, AGNs and galaxies with enhanced star formation (SF) activity. ... In the Northern sky, large samples of ELGs have appeared during the last decade thanks to such objective prism surveys as the First and the Second Byurakan (SBS) surveys (Markarian et al. ...

... disappearance/eruption of the filament accompanied by a number of large-scale dynamic phenomena (a coronal wave, chain, CME, arcade) Yohkoh/SXT . H-alpha and Yohkoh/SXT . ... SOHO/EIT (DelaboudiniХre et al., 1995) images and movies; . ... Preceding activity SOHO/EIT, 195 A (10-22 UT) (Figure 3) . ... SOHO/EIT, 171 A (Figure 4) MLSO/HAO H-alpha and He I 10830 A (Figure 5) MLSO/HAO, He I 10830 A . ... SOHO/EIT, 171 A (Figure 4) SOHO/EIT (171, 195, 284, 304 A) Dec 29, 1999 (Figure 10) . ...

During routine astrometry with the 1.0-m to improve the orbit of the Apollo asteroid 2004 CB, the 'asteroid' was found on March 30 to have a short tail! ... it was renamed periodic comet P/2004 CB (LINEAR). ... Back to Previous News . Siding Spring Survey Main Page . ... Follow-up Astrometry with the 1.0-m at SSO . Previous News Items . Anglo-Australian Near Earth Asteroid Survey 1990-96 . ...

... IONOSPHERIC DATA IN THE INTERACTIVE SPIDR SYSTEM . ... The Ionosphere The ionosphere is that part of the upper atmosphere where free electrons occur in sufficient density to have an appreciable influence on the propagation of radio frequency electromagnetic waves. ... These regions may be further divided into several regularly occurring layers, such as F1 or F2. ... E Region: The region between about 95 and 150km above the Earth that marks the height of the regular daytime E layer. ...

... Assistant Professor, INAF Arcetri Astrophysical Observatory, Florence Italy . ... My research is mainly concentrated on the studies at the boundaries between Particle Physics and Astrophysics. ... IтАЩm involved in the activity of the High Energy Astrophysics Group at the Arcetri Astrophysical Observatory, of the Theory Group at the Gran Sasso National Laboratory and of the Gran Sasso Science Institute an international PhD school on Physics, Mathematics, Computer Science and Social Sciences. ...

... The Sun is the closest star to us, and a regular object in our Galaxy. Solar activity manifests itself, primarily, in solar flares - episodic explosive energy release in the form of electromagnetic radiation and high energy particles (electrons and protons). The nature of the flares is related to cyclic variations of global and local magnetic fields in the atmosphere of the Sun. ... Such formations are called active regions. ...

Next: Code of Good Practice Up: scientific Previous: scientific . The Armagh Observatory recognizes that honesty is an essential component of scholarly activity. All researchers have a duty to society, to their profession, to their employer, and to those funding their research, to conduct their research in the most conscientious and responsible manner possible. ... Next: Code of Good Practice Up: scientific Previous: scientific webmaster@star.arm.ac.uk ...

... Research objects and scientific purposes . Space scientific program includes development and launch of two supersmall spacecrafts "Universitetskiy" and "Kompas-2" intended for monitoring of radiation conditions near the Earth. ... All the studies conducted in the near-Earth space are characterised by strong radiation fields. ... The circular polar orbits, which cover all the near-Earth space, are the most favorable for comprehensive studies of the radiation conditions near the Earth. ...

... OOF . ... OOF Index . ... OOF software . ... Current version: V1.0.1 . Version V1.0 . This page contains a description and links for download of software that may be used for modelling various aspect of absorption and emission of radiation by interstellar dust. The initial version of software was produced in support of my PhD thesis (see the publications page ). ... Calculation of absorption and scattering cross section of silicate and graphitic spherical grains using Mie theory. ...

... Russian Foundation for Basic Research , Project number 98-02-17366 . ... A number of experiments proposes the d -type of the wave function, having two directions with positive and two (in orthogonal direction) - with negative sign of the order parameter. ... The effect of the wave function phase is most efficiently revealed in the experiments with Josephson structures, that are used for determination of the dependences on the pulse direction. ... The project goals are: . ...

... Since July 1993 all observations collected by the 1.82m telescope at Cima Ekar (Asiago) are systematically archived on DAT cartridges and a listing of collected data, including all parameters of the observations, is maintained in a relational DBMS. ... A user willing to retrieve data from the archive must send the list of requested observations (that must include the keyword `` CODICE '') to the archive maintainer who will forward it to the technical staff at the Asiago Observatory. ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . ... Flights Chronology . ... ISS Russian Segment . ... Simonyi as a space flight participant during VC-16 visiting crew flight onboard the Souyz TMA-14 manned transport spacecraft and the ISS Russian Segment modules. ... Determination of radiological situation in the ISS RS measurement areas when conducting space experiment during VC-16 flight. ... 2015 JSC "S.P. Korolev RSC "Energia" . ...