1/ph/lb exploring the solar system
... The latter book is supplied at no cost to the students, and provides an excellent companion to the unit subject matter. An internet web page (see section A1) is also provided. This contains the syllabus, references to recommended texts, links to relevant external web pages as well as to a “news” pag ...
... The latter book is supplied at no cost to the students, and provides an excellent companion to the unit subject matter. An internet web page (see section A1) is also provided. This contains the syllabus, references to recommended texts, links to relevant external web pages as well as to a “news” pag ...
Presentation - Copernicus.org
... Discriminatory action of the G-E field: the Sun and the Earth as examples Neutral particles can experience only the Newtonian field but, if a plasma is sufficiently ionized, the G-E field will develop a net outward force upon the ions, electrons being driven inwards. In the Sun, the electrons detach ...
... Discriminatory action of the G-E field: the Sun and the Earth as examples Neutral particles can experience only the Newtonian field but, if a plasma is sufficiently ionized, the G-E field will develop a net outward force upon the ions, electrons being driven inwards. In the Sun, the electrons detach ...
Solutions - Physics @ IUPUI
... a) an X-ray b) a radio wave c) a gamma ray d) these are all light waves 29) You have a solid object surrounded by a cooler gas. What kind of spectrum will this produce? a) none b) emission c) continuous d) absorption 30) You have a “thin” cool gas with nothing behind it. What kind of spectrum will t ...
... a) an X-ray b) a radio wave c) a gamma ray d) these are all light waves 29) You have a solid object surrounded by a cooler gas. What kind of spectrum will this produce? a) none b) emission c) continuous d) absorption 30) You have a “thin” cool gas with nothing behind it. What kind of spectrum will t ...
Light from stars part II
... 1) Blackbody – all solids, liquids and gases radiate EM waves at all wavelengths with a distribution of energy over the wavelengths that depends on temperature T ...
... 1) Blackbody – all solids, liquids and gases radiate EM waves at all wavelengths with a distribution of energy over the wavelengths that depends on temperature T ...
The Sun and planets
... concentric layers of gas: what we see from Earth is the outline of the outer shell called the photosphere. The phenomena that take place in this region can be viewed even with small instruments as long as they have adequate filters: in fact, one must remember never to stare directly at the Sun becau ...
... concentric layers of gas: what we see from Earth is the outline of the outer shell called the photosphere. The phenomena that take place in this region can be viewed even with small instruments as long as they have adequate filters: in fact, one must remember never to stare directly at the Sun becau ...
THEORETICAL STUDY OF THE SOLAR MAGNETIC CYCLE AND
... The number of sunspots on the face of the Sun is observed to vary cyclically with an average period of about 11 years. However the solar cycle is not regular. The strength of the sunspot cycle as well as its period varies cycle to cycle in an irregular manner. One puzzling aspect of this 11-year sun ...
... The number of sunspots on the face of the Sun is observed to vary cyclically with an average period of about 11 years. However the solar cycle is not regular. The strength of the sunspot cycle as well as its period varies cycle to cycle in an irregular manner. One puzzling aspect of this 11-year sun ...
The Sun The Chromosphere of the Sun
... • Overall, fusion in stars involves destruction of about 1% of the total mass, but this is still enough to make fusion one of the most efficient means of energy generation (much more energy can be released compared to chemical reactions or radioactive decay) • If 10% of the Sun’s Hydrogen is convert ...
... • Overall, fusion in stars involves destruction of about 1% of the total mass, but this is still enough to make fusion one of the most efficient means of energy generation (much more energy can be released compared to chemical reactions or radioactive decay) • If 10% of the Sun’s Hydrogen is convert ...
Closed books and notes, 1 hour. Please PRINT
... (e) Neutrinos interact very weakly with water in current detectors 35. Suppose that for some reason the center of the Sun suddenly became hotter. What would happen next? (a) (b) (c) (d) (e) ...
... (e) Neutrinos interact very weakly with water in current detectors 35. Suppose that for some reason the center of the Sun suddenly became hotter. What would happen next? (a) (b) (c) (d) (e) ...
Lecture 18
... In ~5 Gyr the Sun will leave the main sequence and reach a radius of about 1 au The Earth will then be at roughly the solar surface of T~3000 K, and vaporize ...
... In ~5 Gyr the Sun will leave the main sequence and reach a radius of about 1 au The Earth will then be at roughly the solar surface of T~3000 K, and vaporize ...
UNIFIED PICTURE OF LARGE AND SMALL SCALE: MICRO
... • 42 CCD on primary focal plane of 95 cm optical telescope ...
... • 42 CCD on primary focal plane of 95 cm optical telescope ...
No Slide Title
... The Sun is the nearest star to Earth. The sun is just an ordinary star. The next brightest star to us is called Alpha Centauri. Light from Alpha Centauri takes 4.3 years to get to us. Light from our sun only takes 8 minutes. Alpha Centauri are really three stars all orbiting each other. One of thes ...
... The Sun is the nearest star to Earth. The sun is just an ordinary star. The next brightest star to us is called Alpha Centauri. Light from Alpha Centauri takes 4.3 years to get to us. Light from our sun only takes 8 minutes. Alpha Centauri are really three stars all orbiting each other. One of thes ...
AST301.Ch16.Sun
... energy is nuclear fusion by the proton-proton cycle (discussed below and in class) in the core. These models are why we think the structure of the sun consists of (from center to surface): Core (can only see by neutrinos—see below)— temperature about 10 million degrees! Understand why, and the impli ...
... energy is nuclear fusion by the proton-proton cycle (discussed below and in class) in the core. These models are why we think the structure of the sun consists of (from center to surface): Core (can only see by neutrinos—see below)— temperature about 10 million degrees! Understand why, and the impli ...
Formation of Active Regions on the Rising Slope of the 23rd Solar
... cycle (monthly and quarterly forecasts are called middleterm forecasts, for one to several years – long-term forecasts); super long-term – for a subsequent 11-year cycle or several cycles [1]. Active events on the Sun are observed in limited areas called Activity Centers. In the active regions © 201 ...
... cycle (monthly and quarterly forecasts are called middleterm forecasts, for one to several years – long-term forecasts); super long-term – for a subsequent 11-year cycle or several cycles [1]. Active events on the Sun are observed in limited areas called Activity Centers. In the active regions © 201 ...
Chapter 29 Review
... 1. at 6-month intervals 2. during Earth’s coldest weather 3. at the midpoint of the star’s rotation 4. at the peak of the star’s blueshift ...
... 1. at 6-month intervals 2. during Earth’s coldest weather 3. at the midpoint of the star’s rotation 4. at the peak of the star’s blueshift ...
Lecture_20_PHYS747 - Stanford Solar Physics
... energy of the interactions between the electrons and nuclei; the ionization state of the plasma is found by minimizing the total free energy with respect to the occupation numbers of the different possible ionization levels. 2. “OPAL” - Rogers F.J., & Iglesias C.A. (1992) - The physical picture desc ...
... energy of the interactions between the electrons and nuclei; the ionization state of the plasma is found by minimizing the total free energy with respect to the occupation numbers of the different possible ionization levels. 2. “OPAL” - Rogers F.J., & Iglesias C.A. (1992) - The physical picture desc ...
ASTR 1120H – Spring Semester 2010 Exam 2 – Answers The
... H II regions (also known as emission nebulae) are regions of gas that have been ionized by UV radiation from nearby hot stars. The hydrogen nuclei (i.e., protons) and electrons recombine in excited energy states and when the electron cascades back down toward the ground state, the transition from n ...
... H II regions (also known as emission nebulae) are regions of gas that have been ionized by UV radiation from nearby hot stars. The hydrogen nuclei (i.e., protons) and electrons recombine in excited energy states and when the electron cascades back down toward the ground state, the transition from n ...
Earth Science 24.3 The Sun
... The sun’s equator rotates once in 25 days, while a location 70 degrees from the equator (either north or south of it) requires 33 days to make one revolution. Imagine if Earth rotated in a similar manner. The sun’s nonstandard rotation is made possible by the fact that the sun is a body made up out ...
... The sun’s equator rotates once in 25 days, while a location 70 degrees from the equator (either north or south of it) requires 33 days to make one revolution. Imagine if Earth rotated in a similar manner. The sun’s nonstandard rotation is made possible by the fact that the sun is a body made up out ...
The Sun (power point) by Ms. Kimball the_sun_pp
... million tons) into energy, and release an enormous amount of this heat and light energy into the Solar System. • In these fusion reactions, the Sun loses 4 million tons of mass each second. • The Sun will run out of fuel in about 5 billion (5,000,000,000) years. When this happens, the Sun will explo ...
... million tons) into energy, and release an enormous amount of this heat and light energy into the Solar System. • In these fusion reactions, the Sun loses 4 million tons of mass each second. • The Sun will run out of fuel in about 5 billion (5,000,000,000) years. When this happens, the Sun will explo ...
MHD seismology as a tool to diagnose the coronae of X
... these Sun-like stars have seed magnetic field generation in their interior, which transport outward to permeate their chromosphere and coronae in leading to the formation of transients (e.g., flares) as well as some form of MHD wave activity (e.g., Pandey & Srivastava 2009) similar to the transients ...
... these Sun-like stars have seed magnetic field generation in their interior, which transport outward to permeate their chromosphere and coronae in leading to the formation of transients (e.g., flares) as well as some form of MHD wave activity (e.g., Pandey & Srivastava 2009) similar to the transients ...
CIII 97.7 nm - Astronomy at Swarthmore College
... - Probes inserted into the plasma can measure magnetic fields and provide information about bulk flows, but they also create significant perturbations in the plasma structure. External, photonbased diagnostics are therefore also useful for determining plasma properties. - The SSX plasma is composed ...
... - Probes inserted into the plasma can measure magnetic fields and provide information about bulk flows, but they also create significant perturbations in the plasma structure. External, photonbased diagnostics are therefore also useful for determining plasma properties. - The SSX plasma is composed ...
κβαντικη / ολιστικη αστρολογια
... Voyager 2 is in a region called the heliosheath, the "thick skin" of the bubble around our solar system created by the sun. Voyager 1 is roughly 10.5 billion miles (16.9 billion kilometers) from Earth, putting it slightly deeper into the skin. This bubble is technically the sun's outer atmosphere, s ...
... Voyager 2 is in a region called the heliosheath, the "thick skin" of the bubble around our solar system created by the sun. Voyager 1 is roughly 10.5 billion miles (16.9 billion kilometers) from Earth, putting it slightly deeper into the skin. This bubble is technically the sun's outer atmosphere, s ...
What is a T Tauri star?
... Strong Li I Absorption • = 6707.76 Å ; 2P3/2 ->2S1/2 • = 6707.91 Å ; 2P1/2 ->2S1/2 • Li fragile, destroyed when in contact with high temperatures at base of convecting region of stars, so strong Li = young • In TTSs, log[nLi] = 3 ; similar to meteorites (in sun, log[nLi] = 1; log[nH]≡12) ...
... Strong Li I Absorption • = 6707.76 Å ; 2P3/2 ->2S1/2 • = 6707.91 Å ; 2P1/2 ->2S1/2 • Li fragile, destroyed when in contact with high temperatures at base of convecting region of stars, so strong Li = young • In TTSs, log[nLi] = 3 ; similar to meteorites (in sun, log[nLi] = 1; log[nH]≡12) ...
How the Sun Works
... along the magnetic lines from sunspot pairs. These arches of gas are called prominences. They can last two to three months and can extend 30,000 miles or more above the sun’s surface. ...
... along the magnetic lines from sunspot pairs. These arches of gas are called prominences. They can last two to three months and can extend 30,000 miles or more above the sun’s surface. ...
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.