• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
27 September: Inside the Sun
27 September: Inside the Sun

... the star to contract is balanced by the high pressure in the interior of the Sun or another star. At each point in the stellar interior, the pressure must equal the weight of the overlying material. In physics, this condition is called ...
Our Sun - STEMpire Central
Our Sun - STEMpire Central

... A. visible “surface” of the Sun B. the “graininess” of the Sun’s surface, evidence of the lava lamp effect C. dim layer of the Sun’s atmosphere, seen as a pink band during an eclipse D. thin atmospheric layer where temperatures skyrocket E. cooler, darker regions of the Sun’s surface F. outer layer ...
Earth
Earth

... The Earth is surrounded by a magnetosphere, a region of strong magnetic forces that extends upward from about 140 km in the upper atmosphere. In the magnetosphere, the magnetic field of the Earth traps rapidly moving charged particles, the majority of which appear to be emitted by the Sun during per ...
The science behind our Sun and its interaction with Earth The
The science behind our Sun and its interaction with Earth The

... about halfway through its lifespan (Frank, 2008). The Sun's light and heat are absolutely vital to human existence, yet most of us take them for granted. The Sun is the most important factor in Earth supporting life. We have come a long way in the study of our star, and have learned much. Understand ...
Chapter 5 The Solar Wind
Chapter 5 The Solar Wind

... the ecliptic and highly warped. During periods of solar minimum the interplanetary field seen at the Earth is dominated by two recurring sectors (one toward, one away) per solar rotation. During periods of maximum activity, the IMF is much more complex, with four or more recognisable sectors and man ...
Who’s Afraid of a Stellar Superflare? Rachel Osten GSFC
Who’s Afraid of a Stellar Superflare? Rachel Osten GSFC

... Smith et al. (2004) show that while incident ionizing radiation from stellar flares won’t penetrate terrestrial atmosphere, redistribution of radiation to UV is orders of magnitude larger and can be a significant effect ...
unit a assessment 2 - d
unit a assessment 2 - d

... Colorado Academic Standards in High School Science - This unit has been designed to meet the following: ES 1: The history of the universe, solar system and Earth can be inferred from evidence left from past events. ES 2: As part of the solar system, Earth interacts with various extraterrestrial forc ...
Studies on post-flare loop prominence of 1981 April 27
Studies on post-flare loop prominence of 1981 April 27

... increased gradually in height, the footpoints of the loop separated from each other with a velocity of several kilometers per second. Figure 2 shows the location of the hard X-ray double sources at 07 : 56 UT with unbalanced intensities of this event over the limb of the Sun. This data was obtained ...
Clase 10 (´05)-Efecto corona
Clase 10 (´05)-Efecto corona

... and the weaker emissions in the range of 80 nm to 200 nm. • The excitation coefficient (i.e. number of molecules excited by an electron drifting 1 cm in the field direction) depends on the composition of air and is a function of E/p (cociente campo eléctrico/presión) ...
Astronomy 102, Spring 2003 Solutions to Review Problems
Astronomy 102, Spring 2003 Solutions to Review Problems

... 3. Suppose that nuclear fusion at the center of the sun were to suddenly stop, but was replaced by some new, non-nuclear way of generating energy (unknown to modern physics). Additionally, suppose that this new energy source generated exactly the same amount of energy as nuclear fusion currently do ...
hybrid
hybrid

... field-aligned currents, calculated within the inner boundary, is mapped along the geomagnetic field lines into the ionosphere as input to the ionospheric potential equation. • The potential is then mapped back to the inner boundary of hybrid calculation where it is used as boundary condition for the ...
Return both exam and scantron sheet when you
Return both exam and scantron sheet when you

... (b) difference in speeds of the Earth and another planet in their orbits around the Sun. (c) planets stopping their eastward motion , moving westward awhile, and then resuming their eastward motion. (d) [None of the above.] 71. At the time of Copernicus, the fact that parallax shift of the brighter ...
2nd Semester Exam Study Guide
2nd Semester Exam Study Guide

... Explain how the solar system formed from a nebula of dust and gas in a spiral arm of the Milky Way Galaxy about 4.6 Ga (billion years ago) Identify patterns in solar activities (sunspot cycle, solar flares, solar wind) Relate events on the Sun to phenomena such as auroras, disruption of radio and sa ...
No Slide Title - Laboratory for Atmospheric and Space Physics
No Slide Title - Laboratory for Atmospheric and Space Physics

... • Observations of this region show shocks, thin “spicules,” and an apparently larger-scale set of convective cells (“super-granulation”). ...
Solar Sails
Solar Sails

... • Has to be lightweight • Acceleration is really slow • Sunlight drops off as radius squared, so too does the acceleration • Works great really close to the sun but… ...
The Virial Theorem, MHD Equilibria, and Force
The Virial Theorem, MHD Equilibria, and Force

... Similiarly, if we take J· the equilibrium equation then J · ∇p = 0 since J is orthogonal to J × B also. ...
Talk
Talk

... -pitch angle correction (vparallel/v = cos ) -magnetic field line twist correction (Lprojected/LTOF) ...
X-ray heating of the chromosphere
X-ray heating of the chromosphere

... • The energy provided to given volume in the solar chromosphere in time unit is equal to the energy radiated from the same volume in the same time; • the time-scale of radiative processes in solar chromosphere is much shorter than the time-scale of thermodynamical processes; • during the gradual pha ...
Basic Information about the Solar System Handout
Basic Information about the Solar System Handout

... Interstellar space is the term given to the space between stars within the galaxy. The Sun's nearest known stellar neighbor is a red dwarf star called Proxima Centauri, at a distance of about 4.2 light years (a light year is the distance light travels in a year, at about 300,000 km per second). We a ...
11-28-2016
11-28-2016

... As we learned, the Hubble Space Telescope has provided images of galaxies that are billions of light-years away. Scientists who study the cosmos are called cosmologists. Cosmologists study the structure of the cosmos and try to figure out its history and future. ...
Six Weeks: 3rd ALLEN Subject: Science Grade: 3 TEKS Covering
Six Weeks: 3rd ALLEN Subject: Science Grade: 3 TEKS Covering

... 3.8b describe and illustrate the Sun as a star composed of gases that provides light and heat energy for the water cycle Rigor Questions: What is the center of our Solar System? What are the planets that make up our Solar System (8) Earth and space. The student knows that there are recognizable patt ...
The Sun is a ball of gas!
The Sun is a ball of gas!

... • Release seen in sunspots, flares, coronal mass ejections & other phenomena ...
Document
Document

... thermal distribution function, however the accelerated component has higher energy and a different distribution – we shall consider a power law distribution. Coulomb collisions affect the low energy part of the distribution (see Eq. 6) and this leads to a ‘bump-in-tail’ instability in the distributi ...
File - Mr. Gray`s Class
File - Mr. Gray`s Class

... photosphere of the sun. • Once it hits the photosphere, those photons of energy travel at the speed of light and they reach the earth in about 8.5 minutes! ...
GROUP V: Summary talk
GROUP V: Summary talk

... Magnetic configuration of flares in the low corona • See configurations of all types in radio images: single “loops”, double “loops”, complex configurations • Frequently see magnetic connections over very large spatial scales • Magnetic field strength: spectra typically imply 500-1000 G in the radio ...
< 1 ... 40 41 42 43 44 45 46 47 48 ... 79 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report