HIRES Experiment Module NWS
... by means of a small, expendable measuring device called a radiosonde. Everyday, NOAA’s National Weather Service launches weather balloons from 102 sites throughout the United States, the Caribbean and the Pacific to help with weather forecasting. To obtain wind data, they can be tracked by radar, ra ...
... by means of a small, expendable measuring device called a radiosonde. Everyday, NOAA’s National Weather Service launches weather balloons from 102 sites throughout the United States, the Caribbean and the Pacific to help with weather forecasting. To obtain wind data, they can be tracked by radar, ra ...
Dissipation and heating in solar wind turbulence: from the macro to
... field correlation tensor mentioned above. Multispacecraft measurements of this scale at 1 AU in the ecliptic solar wind [4] have yielded a figure of λc O(106 ) km which, with an average speed of 500 km s−1 , corresponds to a spacecraft frequency of about 6 × 10−5 Hz. — The inertial range. This is ...
... field correlation tensor mentioned above. Multispacecraft measurements of this scale at 1 AU in the ecliptic solar wind [4] have yielded a figure of λc O(106 ) km which, with an average speed of 500 km s−1 , corresponds to a spacecraft frequency of about 6 × 10−5 Hz. — The inertial range. This is ...
The Transport of Cosmic Rays
... • I will concentrate on energies significantly lower than 1 TeV, as the effects of the heliosphere at 1 TeV are smaller (but still significant). • The gyro-radius of a 1 TeV proton in the interstellar magnetic field is ~ 74 AU, which is signifiantly smaller than the heliosphere. • The interstella ...
... • I will concentrate on energies significantly lower than 1 TeV, as the effects of the heliosphere at 1 TeV are smaller (but still significant). • The gyro-radius of a 1 TeV proton in the interstellar magnetic field is ~ 74 AU, which is signifiantly smaller than the heliosphere. • The interstella ...
Chapter 6 Coupling between the ionosphere and the
... evening sector. It is connected to a downward field-aligned current in the south and to an upward field-aliged current in the north. In the morning sector the currents flow in opposite directions.q A downward field-aligned current flows at the polar cap boundary. It is divided into a current flowing ...
... evening sector. It is connected to a downward field-aligned current in the south and to an upward field-aliged current in the north. In the morning sector the currents flow in opposite directions.q A downward field-aligned current flows at the polar cap boundary. It is divided into a current flowing ...
The age–metallicity distribution of earth-harbouring stars
... • The relation between age and metallicity is very tight and agrees with the general predictions of the chemical evolution theory. • The Sun is more metalrich than 85% of its coeval stars. • Direct spectroscopic findings of terrestrial planets would be more efficient if young stars (having 3 t ...
... • The relation between age and metallicity is very tight and agrees with the general predictions of the chemical evolution theory. • The Sun is more metalrich than 85% of its coeval stars. • Direct spectroscopic findings of terrestrial planets would be more efficient if young stars (having 3 t ...
Black Holes - Troy University
... If an object is small enough, gravity overwhelms pressure and the object collapses. Gravity is so strong that nothing, not even light, can escape. “Radius” of a BH 2 miles for a solar mass 1 inch for an Earth mass ...
... If an object is small enough, gravity overwhelms pressure and the object collapses. Gravity is so strong that nothing, not even light, can escape. “Radius” of a BH 2 miles for a solar mass 1 inch for an Earth mass ...
Pluto…now w - Relativity Group
... For the exhibit on planets in our "Hall of the Universe," rather than use the word planet as a classifier, we essentially abandon the ill-defined concept and simply group together families of likeobjects. In other words, instead of counting planets or declaring what is a planet and what is not, we o ...
... For the exhibit on planets in our "Hall of the Universe," rather than use the word planet as a classifier, we essentially abandon the ill-defined concept and simply group together families of likeobjects. In other words, instead of counting planets or declaring what is a planet and what is not, we o ...
Plasma waves above the ion cyclotron frequency in the solar wind: a
... first predictive, theoretical model of solar wind was given by Parker (1958) from an hydrodynamic approach (steady state expansion of a thermally driven electron-proton flow out of the hot solar corona). However, this model and the many derived from it were unable to explain the high speed solar win ...
... first predictive, theoretical model of solar wind was given by Parker (1958) from an hydrodynamic approach (steady state expansion of a thermally driven electron-proton flow out of the hot solar corona). However, this model and the many derived from it were unable to explain the high speed solar win ...
Dark matter
... M = 2 × 1041 kg = 9.5 × 1010 solar masses (Mass of stuff = 95 billion times the mass of the Sun.) ...
... M = 2 × 1041 kg = 9.5 × 1010 solar masses (Mass of stuff = 95 billion times the mass of the Sun.) ...
Semester 2 Review
... • Know where volcanoes occur and why they do? • Explain the relationship between volcanism and hot spots. ...
... • Know where volcanoes occur and why they do? • Explain the relationship between volcanism and hot spots. ...
The Interior of the Sun
... The Sun is a ball of hot gas so its interior transmits sound waves very well which can be seen by the doppler shifting of light emitted at the Sun's surface. Helioseismology uses these sound waves to probe the interior of the Sun. It is the same like geologists use seismic waves from earthquakes to ...
... The Sun is a ball of hot gas so its interior transmits sound waves very well which can be seen by the doppler shifting of light emitted at the Sun's surface. Helioseismology uses these sound waves to probe the interior of the Sun. It is the same like geologists use seismic waves from earthquakes to ...
The Solar Wind Power from Magnetic Flux
... for the fact that the speed of the solar wind observed in situ in interplanetary space is anticorrelated with its coronal freezing-in temperature [Geiss et al., 1995, Fig. 2; von Steiger et al. 2000, Fig. 6], which is determined from the charge state distributions of heavy elements. The freezing-in ...
... for the fact that the speed of the solar wind observed in situ in interplanetary space is anticorrelated with its coronal freezing-in temperature [Geiss et al., 1995, Fig. 2; von Steiger et al. 2000, Fig. 6], which is determined from the charge state distributions of heavy elements. The freezing-in ...
Astronomy - Marshall Public Schools
... Slide show “Dwarf Planets of Our Solar System” Video “ Astronomy Part 1 and 2 “ from Learn 360 with work sheet ...
... Slide show “Dwarf Planets of Our Solar System” Video “ Astronomy Part 1 and 2 “ from Learn 360 with work sheet ...
A Sense of Where We Are
... 4. In the view of your instructor, the outer edge of the solar system is coincident with the outer edge of the Oort comet cloud – about 100,000 AU from the Sun. Oort cloud comets are the most distant objects orbiting the Sun, so they must belong to the solar system. 5. a) Much closer to the Sun than ...
... 4. In the view of your instructor, the outer edge of the solar system is coincident with the outer edge of the Oort comet cloud – about 100,000 AU from the Sun. Oort cloud comets are the most distant objects orbiting the Sun, so they must belong to the solar system. 5. a) Much closer to the Sun than ...
The Nature of the Solar System The Nature of the Solar System
... • Consensus is that the Moon formed as a result of a collision – Mars-sized body collided with semimolten Earth – ~4.5 billion years ago – Some ejected debris thrown into orbit coalesced to form the Moon ...
... • Consensus is that the Moon formed as a result of a collision – Mars-sized body collided with semimolten Earth – ~4.5 billion years ago – Some ejected debris thrown into orbit coalesced to form the Moon ...
STANDARD 4a
... rocky bodies in orbit around the sun and are located between the orbits of Mars and Jupiter. • Astronomers believe that asteroids are leftover pieces of the early solar system that never came together to form a planet ...
... rocky bodies in orbit around the sun and are located between the orbits of Mars and Jupiter. • Astronomers believe that asteroids are leftover pieces of the early solar system that never came together to form a planet ...
The prominent 1.6-year periodicity in solar motion due to the inner
... i.e. the difference is about 700 km. This is more, for example, than the depth of the solar photosphere, which is considered to be about 300–500 km. The distance of the Sun’s centre due to the giant planets reaches up to 1.51×106 km, so that a contribution of the inner planets, which goes up to 808. ...
... i.e. the difference is about 700 km. This is more, for example, than the depth of the solar photosphere, which is considered to be about 300–500 km. The distance of the Sun’s centre due to the giant planets reaches up to 1.51×106 km, so that a contribution of the inner planets, which goes up to 808. ...
Chapter 8: Formation of the solar system 8.1 The Search for Origins
... about 150 K under the low pressure of the solar nebula) o Rock (0.4% of the solar nebula). Rocky material is gaseous at very high temperatures, but condenses into solid bits of mineral at temperatures between about 500 K and 1300 K, depending on the type of rock. (A mineral is a type of rock with a ...
... about 150 K under the low pressure of the solar nebula) o Rock (0.4% of the solar nebula). Rocky material is gaseous at very high temperatures, but condenses into solid bits of mineral at temperatures between about 500 K and 1300 K, depending on the type of rock. (A mineral is a type of rock with a ...
A breath of oxygen for the Sun
... hydrodynamical model of the solar atmosphere, while traditional models are 1D. The model allows to derive the 3D temperature structure and velocity field in the solar surface layers where the spectral lines are formed. The oxygen abundance they found are in much better agreement with helioseismology ...
... hydrodynamical model of the solar atmosphere, while traditional models are 1D. The model allows to derive the 3D temperature structure and velocity field in the solar surface layers where the spectral lines are formed. The oxygen abundance they found are in much better agreement with helioseismology ...
18-Feb-2015 - Institute of Astronomy
... towering plume of gas stretching up to altitudes over 250 km, well into the thin upper reaches of the Martian atmosphere. Each time the plume took less than 10 hours to develop, and then persisted for about 10 days before fading away. Both plumes occurred above the same region of the Martian surface ...
... towering plume of gas stretching up to altitudes over 250 km, well into the thin upper reaches of the Martian atmosphere. Each time the plume took less than 10 hours to develop, and then persisted for about 10 days before fading away. Both plumes occurred above the same region of the Martian surface ...
ppt - SLAC
... • In this part of the sky we are looking lengthwise along a spiral arm. It’s crowded with lots of young stellar objects of all sorts. There are at least 4 EGRET point sources in close proximity. • The 4.8 hour period is about 1/5 of a day. This can cause aliasing for ground-based observatories. A si ...
... • In this part of the sky we are looking lengthwise along a spiral arm. It’s crowded with lots of young stellar objects of all sorts. There are at least 4 EGRET point sources in close proximity. • The 4.8 hour period is about 1/5 of a day. This can cause aliasing for ground-based observatories. A si ...
Lecture05-ASTA01 - University of Toronto
... minutes, and arc seconds north (+) or south (-) of the celestial equator (just as latitudinal positions are described). • Capella, the brightest star in the constellation Auriga, has a declination of +46°0′ and is, therefore, about halfway between the celestial equator (dec = 0°) and the north celes ...
... minutes, and arc seconds north (+) or south (-) of the celestial equator (just as latitudinal positions are described). • Capella, the brightest star in the constellation Auriga, has a declination of +46°0′ and is, therefore, about halfway between the celestial equator (dec = 0°) and the north celes ...
Folie 1 - astro.uni
... What are the expected properties of planetary systems? Can we explain the properties of the solar system? Can we explain diversity of planetary systems? Are there planetary systems similar to ours? If yes, is the solar system typical of exceptional? Are there earth-like planets around other stars? A ...
... What are the expected properties of planetary systems? Can we explain the properties of the solar system? Can we explain diversity of planetary systems? Are there planetary systems similar to ours? If yes, is the solar system typical of exceptional? Are there earth-like planets around other stars? A ...
Lecture 1
... generations of stars and planets to use. Supernova can create any element as atoms are smashing together at billions of degrees K. ...
... generations of stars and planets to use. Supernova can create any element as atoms are smashing together at billions of degrees K. ...
intro - Big Bear Solar Observatory
... Analysis of the non-thermal broadening of soft X-ray spectral lines in solar flares observed with Yohkoh (Alexander et al. 1998, Harra et al. 2001) showed that the non-thermal velocity begins to rise before the flare onset and peaks often before the Hard X-ray emission. COES X-ray flux ...
... Analysis of the non-thermal broadening of soft X-ray spectral lines in solar flares observed with Yohkoh (Alexander et al. 1998, Harra et al. 2001) showed that the non-thermal velocity begins to rise before the flare onset and peaks often before the Hard X-ray emission. COES X-ray flux ...
Solar wind
The solar wind is a stream of charged particles released from the upper atmosphere of the Sun. This plasma consists of mostly electrons, protons and alpha particles with energies usually between 1.5 and 10 keV; embedded in the solar-wind plasma is the interplanetary magnetic field. The solar wind varies in density, temperature and speed over time and over solar longitude. Its particles can escape the Sun's gravity because of their high energy, from the high temperature of the corona and magnetic, electrical and electromagnetic phenomena in it.The solar wind flows outward supersonically to great distances, filling a region known as the heliosphere, an enormous bubble-like volume surrounded by the interstellar medium. Other related phenomena include the aurora (northern and southern lights), the plasma tails of comets that always point away from the Sun, and geomagnetic storms that can change the direction of magnetic field lines and create strong currents in power grids on Earth.