Dust Coagulation in the Solar Nebula using the Grand Tack Model
... fluid; so in essence it is a study of magnetic fluids. In this case the source of the changing magnetic field would be the rotating sun and the field lines would extend out to the gas and dust in the protoplanetary disk. But as the disk rotates the field lines be come tangled, since they are fixed t ...
... fluid; so in essence it is a study of magnetic fluids. In this case the source of the changing magnetic field would be the rotating sun and the field lines would extend out to the gas and dust in the protoplanetary disk. But as the disk rotates the field lines be come tangled, since they are fixed t ...
IS ETA CARINAE A FAST ROTATOR, AND HOW MUCH DOES THE
... According to our models, the main effect from the wind–wind collision zone at the orbital phases analyzed is extended free–free emission from the compressed walls. Such an effect may influence the geometry of the K-band emitting region even at orbital phases far from periastron, depending on the obs ...
... According to our models, the main effect from the wind–wind collision zone at the orbital phases analyzed is extended free–free emission from the compressed walls. Such an effect may influence the geometry of the K-band emitting region even at orbital phases far from periastron, depending on the obs ...
Low-energy charged particle measurement by MAP-PACE onboard SELENE
... anomaly on the surface of the Moon and that this deflects the solar wind particles and varies the degree of compression (Lin et al., 1998). It is of primary importance to study the structure of the lunar wake and the behavior of plasma near the limb of the Moon. The measurements of PACE will reveal ...
... anomaly on the surface of the Moon and that this deflects the solar wind particles and varies the degree of compression (Lin et al., 1998). It is of primary importance to study the structure of the lunar wake and the behavior of plasma near the limb of the Moon. The measurements of PACE will reveal ...
Kinetic aspects of the vortex-induced
... magnetopause almost always accompanied with magnetic reconnection (that is, the vortex-induced reconnection). [T.K.M. Nakamura et al., 2008] The vortex-induced reconnection can lead to the plasma mixing along reconnected field lines. ⇒The vortex-induced reconnection may form the LLBL. ...
... magnetopause almost always accompanied with magnetic reconnection (that is, the vortex-induced reconnection). [T.K.M. Nakamura et al., 2008] The vortex-induced reconnection can lead to the plasma mixing along reconnected field lines. ⇒The vortex-induced reconnection may form the LLBL. ...
THE SPACE WEATHER OF PROXIMA CENTAURI b
... The MHD model of the stellar corona, wind, and magnetic field of Proxima, driven using the scaled GJ51 magnetogram, was computed using BATS-R-US. We assumed a stellar rotation period of 83 days (Benedict et al. 1998). Unlike the case of rapidly rotating stars, where rotation results in azimuthal wra ...
... The MHD model of the stellar corona, wind, and magnetic field of Proxima, driven using the scaled GJ51 magnetogram, was computed using BATS-R-US. We assumed a stellar rotation period of 83 days (Benedict et al. 1998). Unlike the case of rapidly rotating stars, where rotation results in azimuthal wra ...
study of planetary magnetic fields
... Mercury: Earth and Mercury are the only planets in our system whose magnetic fields are generated by the movement of liquid metal at their cores. Mercury’s magnetic field is 100 times weaker than Earth’s. It’s billions of years old and recently discovered data suggests that it was at one point as st ...
... Mercury: Earth and Mercury are the only planets in our system whose magnetic fields are generated by the movement of liquid metal at their cores. Mercury’s magnetic field is 100 times weaker than Earth’s. It’s billions of years old and recently discovered data suggests that it was at one point as st ...
Full text - terrapub
... magnetotail. The average loss rate through the plasmasheet was evaluated as 5 × 1024 s–1, with a typical flux of about 2.5 × 107 cm–2s–1, and they came to the conclusion that only the thermal oxygen population, which is much more abundant below the boundary of the magnetosphere, needs to supply the ...
... magnetotail. The average loss rate through the plasmasheet was evaluated as 5 × 1024 s–1, with a typical flux of about 2.5 × 107 cm–2s–1, and they came to the conclusion that only the thermal oxygen population, which is much more abundant below the boundary of the magnetosphere, needs to supply the ...
chapter5 - Homework Market
... Rigel also produces more energy from each square meter of its photosphere than does the sun. • The sun, in turn, produces more energy from ...
... Rigel also produces more energy from each square meter of its photosphere than does the sun. • The sun, in turn, produces more energy from ...
THE LUYINOSITY VARIABILITY OF SOLAR
... task, in part because the nearby stars seem to be fairly homogeneous in composition, in part because it is difficult to separate composition effects from other factors. In brief, a metal-rich star will have a deeper convective zone and a longer convective turnover time scale than a metal-poor star ...
... task, in part because the nearby stars seem to be fairly homogeneous in composition, in part because it is difficult to separate composition effects from other factors. In brief, a metal-rich star will have a deeper convective zone and a longer convective turnover time scale than a metal-poor star ...
the amplitude of solar oscillations using stellar techniques
... not use the weights when calculating the HARPS power spectrum, since these were not available for BiSON and we wanted to make the window functions exactly the same. The amplitude of solar oscillations measured using the stellar technique is slightly lower than that measured by BiSON, by a factor of ...
... not use the weights when calculating the HARPS power spectrum, since these were not available for BiSON and we wanted to make the window functions exactly the same. The amplitude of solar oscillations measured using the stellar technique is slightly lower than that measured by BiSON, by a factor of ...
The Limits of Our Solar System - Lunar and Planetary Institute
... Sun, they are accelerated inward by gravity but pushed outward by the radiation pressure (see review by Fahr, 1974). For H, the radiation pressure and gravity are comparable, so the H is not accelerated inward. Helium is heavier and is accelerated inward. Hydrogen also has a much shorter ionization ...
... Sun, they are accelerated inward by gravity but pushed outward by the radiation pressure (see review by Fahr, 1974). For H, the radiation pressure and gravity are comparable, so the H is not accelerated inward. Helium is heavier and is accelerated inward. Hydrogen also has a much shorter ionization ...
Dating the Earliest Solids in our Solar System
... It appears that 26Al can be used as a clock to measure small time differences, allowing us to understand more about the formation of the first solids in the solar system. Preliminary Al-Mg results for chondrules from the CR and CV chondrites by K. K. Marhas (Physical Research Lab, India) and colleag ...
... It appears that 26Al can be used as a clock to measure small time differences, allowing us to understand more about the formation of the first solids in the solar system. Preliminary Al-Mg results for chondrules from the CR and CV chondrites by K. K. Marhas (Physical Research Lab, India) and colleag ...
Written by G. Jeffrey Taylor
... measured in a grain designated np 1 (see image above), 3.6 times the solar value, is likely to be a minimum because the chromium isotopic signal of an anomalous grain is averaged with that of normal grains surrounding it. ...
... measured in a grain designated np 1 (see image above), 3.6 times the solar value, is likely to be a minimum because the chromium isotopic signal of an anomalous grain is averaged with that of normal grains surrounding it. ...
Transient events in the EUV transition region and chromosphere
... cess of investigating this further using wavelet analysis, but a preliminary result is presented in Fig. 5 for a network feature. It appears that there is indeed excess power at some times during the 90-minute observing sequence at this and smaller frequencies. Further, within one of the cells (Sola ...
... cess of investigating this further using wavelet analysis, but a preliminary result is presented in Fig. 5 for a network feature. It appears that there is indeed excess power at some times during the 90-minute observing sequence at this and smaller frequencies. Further, within one of the cells (Sola ...
Migrating planets and migrating theories
... Uranus and Neptune originally formed much closer to our sun than where they currently reside. Also, at one time Jupiter and Saturn supposedly had different orbits that nudged Uranus and Neptune just right to cause them to migrate outward from the sun. The model also proposes that matter left over af ...
... Uranus and Neptune originally formed much closer to our sun than where they currently reside. Also, at one time Jupiter and Saturn supposedly had different orbits that nudged Uranus and Neptune just right to cause them to migrate outward from the sun. The model also proposes that matter left over af ...
PHYSICAL RESEARCH LABORATORY
... 8. Sahijpal S. and Goswami J.N. (1998) Refractory phases in Primitive Meteorites devoid of 26Al and 41Ca: Representative samples of first solar system solids? Astrophysical J. Letters 509, L137-140. 9. Sahijpal S., et al., (1998) A stellar origin for the short-lived nuclides in the early solar syste ...
... 8. Sahijpal S. and Goswami J.N. (1998) Refractory phases in Primitive Meteorites devoid of 26Al and 41Ca: Representative samples of first solar system solids? Astrophysical J. Letters 509, L137-140. 9. Sahijpal S., et al., (1998) A stellar origin for the short-lived nuclides in the early solar syste ...
Document
... •Sun emits with the spectrum of a black body at temperature of 5800 oK, superimposed with the absorption lines specific of elements. From the line intensitites one decudes the abundances of elements, with respect to hydrogen.. •Helium has been discovered in the solar corona, but due to the position ...
... •Sun emits with the spectrum of a black body at temperature of 5800 oK, superimposed with the absorption lines specific of elements. From the line intensitites one decudes the abundances of elements, with respect to hydrogen.. •Helium has been discovered in the solar corona, but due to the position ...
Spectral measurements of visible solar direct
... The characteristics of the solar energy input over Jeddah were investigated. Global and direct solar radiation were detected daily and recorded from sunrise to sunset. The instruments used were a pyranometer and two pyrheliometers (of the Epply type) positioned over the old building of the Faculty o ...
... The characteristics of the solar energy input over Jeddah were investigated. Global and direct solar radiation were detected daily and recorded from sunrise to sunset. The instruments used were a pyranometer and two pyrheliometers (of the Epply type) positioned over the old building of the Faculty o ...
Is it possible to measure the Lense-Thirring effect on the orbits of the
... force1 as predicted by GTR, although in an indirect way. “It often has been claimed that the presence of gravitomagnetism within the total gravitational interaction has not been experimentally confirmed and measured. Indeed, different experiments have been under development to explicitly observe the ...
... force1 as predicted by GTR, although in an indirect way. “It often has been claimed that the presence of gravitomagnetism within the total gravitational interaction has not been experimentally confirmed and measured. Indeed, different experiments have been under development to explicitly observe the ...
The Sunspots - Scientific Research Publishing
... some regions of the photosphere, and their relationship with the appearance, properties and life time of the Sunspots. A large amount of observational data has been accumulated of the subject [1]; in particular, it is well known that the presence of Sunspots on the solar disk is related to a substan ...
... some regions of the photosphere, and their relationship with the appearance, properties and life time of the Sunspots. A large amount of observational data has been accumulated of the subject [1]; in particular, it is well known that the presence of Sunspots on the solar disk is related to a substan ...
The role of the sun in climate forcing
... 1. Introduction The Earth receives at the top of the atmosphere an electromagnetic energy #ow of about 1365 W m~2 from the Sun. Until high-precision satellite data became available, the solar energy output was considered as constant by many scientists. This is nicely re#ected in the term `solar cons ...
... 1. Introduction The Earth receives at the top of the atmosphere an electromagnetic energy #ow of about 1365 W m~2 from the Sun. Until high-precision satellite data became available, the solar energy output was considered as constant by many scientists. This is nicely re#ected in the term `solar cons ...
magnetospheres of the outer planets
... Such was the state of affairs in early 1979, a few weeks before the Voyager 1 encounter with Jupiter, when I heard from L. J. Lanzerotti, a Voyager team member at AT&T Bell Laboratories. He told me that the Voyager ultraviolet spectrometer was finding abundant sulfur and oxygen ions in the Jovian ma ...
... Such was the state of affairs in early 1979, a few weeks before the Voyager 1 encounter with Jupiter, when I heard from L. J. Lanzerotti, a Voyager team member at AT&T Bell Laboratories. He told me that the Voyager ultraviolet spectrometer was finding abundant sulfur and oxygen ions in the Jovian ma ...
The Cosmos, the Solar System and the Primeval Earth
... 4 He remained stable. Heavier elements could not be formed because of the low concentration of deuterium: the 2 H nuclei decomposed rapidly (Weinberg, 1977). Further expansion, and thus further cooling, led to a change in the behaviour of the deuterium nuclei, and in this phase, they became stable, ...
... 4 He remained stable. Heavier elements could not be formed because of the low concentration of deuterium: the 2 H nuclei decomposed rapidly (Weinberg, 1977). Further expansion, and thus further cooling, led to a change in the behaviour of the deuterium nuclei, and in this phase, they became stable, ...
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.