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SES_Book_Interactive 508
SES_Book_Interactive 508

... The overall level of solar activity varies as well on decadal periods of time, changing by a factor of five or more from one 11-year cycle to the next, when measured in terms of the numbers of sunspots seen on the Sun in the years around the maximum of each solar cycle. There are weak cycles and str ...
Papervision3D star (sun) tutorial and source - 02
Papervision3D star (sun) tutorial and source - 02

... The star’s gradient Actually, it took quite some tweaking to get a nice gradient of white in the middle and yellow to red on the edge. It’s a basic Sprite gradient fill, using three colors, alpha layering and a specific color ratio array to get the last two colors (yellow and red) on the edge. Then ...
Solar Lab
Solar Lab

... (302,750 miles) to the Sun’s surface at approximately 432,050 miles from the center. That crosssection is about 129,300 miles wide. Energy/heat is transferred outward by thermal convection. It is the same process that occurs when you heat soup on a stove top. Cells of hot material called granules ri ...
1st Semester Earth Science Review 2014-15
1st Semester Earth Science Review 2014-15

... d. the galaxy that the star belongs to. ____ 51. Circumpolar stars in the Northern Hemisphere appear to circle a. the moon. c. Proxima Centauri. b. the sun. d. Polaris. ____ 52. Objects, such a stars, moving toward an observer a. do not display a color shift. b. display a blue shift. c. display a re ...
Stellar Surface Imaging of II Pegasi via Light
Stellar Surface Imaging of II Pegasi via Light

... radiative zone to the surface is the convective zone. Plasma in the set to 90°.) convective zone rises to the surface and then sinks back down as it cools, • There are two spots on the • The pictures on the left show the thus transporting energy outward via convection. surface with a separation of r ...
The solar system
The solar system

... • This process could take less than a million years. ...
Solar System
Solar System

... gases are pushed away with the solar wind. For other astronomical object, this is visible with the two comet "tails,” where one "tail" is mainly rocks and dust, with the other "tail" composed of gases. This second tail is being pushed by the solar wind and causes its effect. In 1960, the Satellite E ...
chapter14Sol
chapter14Sol

... Are cooler than other parts of the Sun’s surface (4000 K) Are regions with strong magnetic fields ...
The Sun, Our Star
The Sun, Our Star

... regions with north polarity and dark blue indicates regions with south polarity. Notice that the polarity pattern of spot pairs is reversed between the top and bottom hemispheres of the Sun. That is, in the upper hemisphere, blue tends to be on the left and yellow on the right. In the lower hemisphe ...
Section I. SpuItering of ices ASTROPHYSICAL IMPLICATIONS OF
Section I. SpuItering of ices ASTROPHYSICAL IMPLICATIONS OF

... passing star, causing the icy object to enter the inner solar system where its ices can be sublimed. The plasma environments in the solar system have a wide range of particle energies and intensities. For example, the solar wind, continually flowing out from the sun with a density of a few particles ...
July, 2014 - Spy Hill .net
July, 2014 - Spy Hill .net

... universe, it's striking how empty outer space truly is. Even though the largest concentrations of mass are separated by huge distances, interstellar space isn't empty: it's filled with dilute amounts of gas, dust, radiation and ionized plasma. Although we've long been able to detect these components ...
Design your own Solar Cupcakes!
Design your own Solar Cupcakes!

... Venus Transit: The Venus transits occur in pairs, every 105.5 and 121.5 years, because the angle of its orbit compared to Earth’s means that it rarely passes directly between the Sun and the Earth. The next Venus transit will be in December 2117. Transits will appear to cross the Sun at slightly dif ...
Signatures of stellar surface structure
Signatures of stellar surface structure

... relative to the geometric center [blue dot]. (Ludwig 2006) ...
Testing Models of Coronal Heating, X
Testing Models of Coronal Heating, X

... More solar precedents • Solar flares and coronal mass ejections (CMEs) can set off wave-like “tsunamis” on the solar surface . . . ...
The Sun - Sheldon ISD
The Sun - Sheldon ISD

... There are some pretty spectacular events that take place on the sun. Have you heard of sunspots? These are regions on the photosphere that are cooler than the surrounding areas. Sunspots are caused by interactions with the sun's magnetic field. Sunspots have two parts. The dark region on the inside ...
R p - Center for Solar
R p - Center for Solar

... The oblateness is difficult to measure! Perihelion of Mercury & General Theory of Relativity Oblateness seems to be related to only the surface rotation ...
1 - Quia
1 - Quia

... 24. A cloud of gas and dust from which stars are "born" is a A. nebula B. nova C. spectrum D. radiation 25. Gas and dust in interstellar nebulae can form - (2 points) A. stars B. comets C. meteors D. asteroids 26. Our distance from the sun is about 93 million miles, or 1 -. A. parsec B. astronomical ...
Anatomy of the Sun
Anatomy of the Sun

... spectrum: the result of passing light through a gas which absorbs some of it. • The second spectrum was the continuous spectrum, the shape of which can indicate temperature. • The third type of spectrum used in astronomy is the emission spectrum: the light observed when an object emits light (usuall ...
Anatomy of the Sun - Lincoln-Sudbury Regional High School
Anatomy of the Sun - Lincoln-Sudbury Regional High School

... spectrum: the result of passing light through a gas which absorbs some of it. • The second spectrum was the continuous spectrum, the shape of which can indicate temperature. • The third type of spectrum used in astronomy is the emission spectrum: the light observed when an object emits light (usuall ...
M.Ishida_Future_HE_Mission2006 - X
M.Ishida_Future_HE_Mission2006 - X

...  Accretion onto WD takes place through an optically thick Keplerian disc (T~105K).  Hard X-rays are radiated from the Boundary Layer which is optically thin/geometrically thick with T~108K.  The rotation speed of WD at its surface is usually much smaller than vK(R*) (~5000km/s).  For settling do ...
ppt
ppt

... • The Sun as a paradigm of a low-mass star. Standard test case for stellar evolution. Sun is used to callibrate stellar models • Neutrinos from the Sun: only direct evidence of solar energy sources (original proposal for the Homestake experiment that led to the Solar Neutrino Problem) • Neutrino osc ...
Solar
Solar

... • Sunspots change over a period of days and move across the Sun as it rotates • They have a strong magnetic field associated with them and last from a few days to a few weeks ...
Planetary aurorae trace an interplanetary shock from the Sun to Saturn
Planetary aurorae trace an interplanetary shock from the Sun to Saturn

... from Earth until several AU, the LESIA team benefits from the exceptional planetary conjunction at the time of these observations : the Sun, the Earth, Jupiter and Saturn then were almost aligned, and measurements of the solar wind parameters were realized a little upstream of Jupiter by the Cassini ...
THE ROTATION OF THE SUN
THE ROTATION OF THE SUN

... move apparently from east to west. Moreover, our planet moves a little less than one degree per day around its complete orbit, so the westward shift would appear quite trivial even on a week basis. It is clear that the displacements we can see are due to the solar rotation itself. Are the spots keep ...
The Sun - Our Star
The Sun - Our Star

... The Lower Atmosphere Coronal Structure  Best seen in X-ray and ultraviolet images  Bright areas, also referred to as active regions, are closed magnetic field regions with hot gas often seen along coronal ...
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Corona



A corona (Latin, 'crown') is an aura of plasma that surrounds the sun and other celestial bodies. The Sun's corona extends millions of kilometres into space and is most easily seen during a total solar eclipse, but it is also observable with a coronagraph. The word ""corona"" is a Latin word meaning ""crown"", from the Ancient Greek κορώνη (korōnē, “garland, wreath”).The high temperature of the Sun's corona gives it unusual spectral features, which led some in the 19th century to suggest that it contained a previously unknown element, ""coronium"". Instead, these spectral features have since been explained by highly ionized iron (Fe-XIV). Bengt Edlén, following the work of Grotrian (1939), first identified the coronal lines in 1940 (observed since 1869) as transitions from low-lying metastable levels of the ground configuration of highly ionised metals (the green Fe-XIV line at 5303 Å, but also the red line Fe-X at 6374 Å). These high stages of ionisation indicate a plasma temperature in excess of 1,000,000 kelvin, much hotter than the surface of the sun.Light from the corona comes from three primary sources, which are called by different names although all of them share the same volume of space. The K-corona (K for kontinuierlich, ""continuous"" in German) is created by sunlight scattering off free electrons; Doppler broadening of the reflected photospheric absorption lines completely obscures them, giving the spectral appearance of a continuum with no absorption lines. The F-corona (F for Fraunhofer) is created by sunlight bouncing off dust particles, and is observable because its light contains the Fraunhofer absorption lines that are seen in raw sunlight; the F-corona extends to very high elongation angles from the Sun, where it is called the zodiacal light. The E-corona (E for emission) is due to spectral emission lines produced by ions that are present in the coronal plasma; it may be observed in broad or forbidden or hot spectral emission lines and is the main source of information about the corona's composition.
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