the PDF - Montana State University
... The Sun is the best observed object in astrophysics, but despite this distinction the nature of its well-ordered generation of magnetic field in 11-year activity cycles remains a mystery. In this work, we place the solar cycle in a broader context by examining the long-term variability of solar anal ...
... The Sun is the best observed object in astrophysics, but despite this distinction the nature of its well-ordered generation of magnetic field in 11-year activity cycles remains a mystery. In this work, we place the solar cycle in a broader context by examining the long-term variability of solar anal ...
?! XMM-Newton ready for the next decade?!!!! Chandra calibration meeting
... Matrices detailed spatial re-analysis planned ...
... Matrices detailed spatial re-analysis planned ...
Astronomy and Astrophysics (ASTRO) Iowa State University – 2013-2014 1
... Survey of astrophysical processes relating to stars, galaxies and the Universe. Radiation transport, radiation processes, scattering, kinetic description of plasma, hydrodynamics, magnetohydrodynamics, MHD waves, shocks, properties of systems in local thermodynamic equilibrium, non-thermal systems, ...
... Survey of astrophysical processes relating to stars, galaxies and the Universe. Radiation transport, radiation processes, scattering, kinetic description of plasma, hydrodynamics, magnetohydrodynamics, MHD waves, shocks, properties of systems in local thermodynamic equilibrium, non-thermal systems, ...
Tidal Effects on the Oort Cloud Comets and Dynamics of the Sun in
... of migration might induce on the cometary motion. Following several previous studied, we identified the spiral arm structure as the main perturbation that is able to produce an efficient solar migration through the disk. Widening the classical model for the spiral arms, provided by Lin& Shu to a 3D ...
... of migration might induce on the cometary motion. Following several previous studied, we identified the spiral arm structure as the main perturbation that is able to produce an efficient solar migration through the disk. Widening the classical model for the spiral arms, provided by Lin& Shu to a 3D ...
FLARE SWG theme 3: high
... Large-scale clustering analyses with respect to galaxies – bias and constraints on BH seed formation? Mpc-scale environment around first quasars using FLARE IFU: co-eval galaxy and other z>6 quasar/AGN connections (multiple growing BHs)? Evidence for quasar outflows (e.g., broad CIV absorption troug ...
... Large-scale clustering analyses with respect to galaxies – bias and constraints on BH seed formation? Mpc-scale environment around first quasars using FLARE IFU: co-eval galaxy and other z>6 quasar/AGN connections (multiple growing BHs)? Evidence for quasar outflows (e.g., broad CIV absorption troug ...
- Mineralogical Society of America
... into the parent bodies of primitive meteorites. Presolar grains are identified by their having isotopic compositions that can be drastically different from terrestrial, and from one another, depending on their mineral types and mode of origin (Zinner 2014). It was initially believed that presolar gr ...
... into the parent bodies of primitive meteorites. Presolar grains are identified by their having isotopic compositions that can be drastically different from terrestrial, and from one another, depending on their mineral types and mode of origin (Zinner 2014). It was initially believed that presolar gr ...
Comparative study of two solar eclipses in the 21st century
... Solar eclipses have been seen as incredible events since thousands of years ago. Anyway, they have also been considered terrifying because our ancestors couldn’t understand why the sun disappeared for some hours. For that reason, it was understandable to consider that their gods were sending them a ...
... Solar eclipses have been seen as incredible events since thousands of years ago. Anyway, they have also been considered terrifying because our ancestors couldn’t understand why the sun disappeared for some hours. For that reason, it was understandable to consider that their gods were sending them a ...
8 Comets: Potential Sources of Prebiotic Molecules for the
... toward a direction opposite to the other tails. It is in fact always present, but not always visible. It reveals the presence of an accumulation of particles in the orbital plane of the comet. These particles are larger than those of the normal dust tail, and have thus been ejected at low speed from ...
... toward a direction opposite to the other tails. It is in fact always present, but not always visible. It reveals the presence of an accumulation of particles in the orbital plane of the comet. These particles are larger than those of the normal dust tail, and have thus been ejected at low speed from ...
The compositional variation of small bodies across the Solar System
... Small bodies hold keys to our understanding of the Solar System. By studying these populations we seek the information on the conditions and structure of the primordial and current Solar System, its evolution, and the formation process of the planets. Constraining the surface composition of small bo ...
... Small bodies hold keys to our understanding of the Solar System. By studying these populations we seek the information on the conditions and structure of the primordial and current Solar System, its evolution, and the formation process of the planets. Constraining the surface composition of small bo ...
Migrating Dust Particles
... The temperature in the disk is harder to infer. For the simplest case we have a optically thin disk, so that every dust-particle is hit by the radiation directly from the star. The amount of energy per unit time per area that the Sun radiates is the flux F = ...
... The temperature in the disk is harder to infer. For the simplest case we have a optically thin disk, so that every dust-particle is hit by the radiation directly from the star. The amount of energy per unit time per area that the Sun radiates is the flux F = ...
Our Solar System
... dark blue spots. When the Voyager probe went by Neptune in 1989, it saw a large one called the Great Dark Spot. In 1994, it vanished, but later reappeared. There is also a large white cloud nicknamed "Scooter." It goes around Neptune every 16 hours. The winds of Neptune are very fast, blowing at up ...
... dark blue spots. When the Voyager probe went by Neptune in 1989, it saw a large one called the Great Dark Spot. In 1994, it vanished, but later reappeared. There is also a large white cloud nicknamed "Scooter." It goes around Neptune every 16 hours. The winds of Neptune are very fast, blowing at up ...
English version - Richard de Grijs
... “The tails seem to tell us why that is,” said Posselt, adding that the pulsars’ spin and magnetic axis orientations influence what kind of emission is seen on Earth. Geminga may have magnetic poles quite close to the top and bottom of the object, and nearly aligned spin poles, much like Earth. On ...
... “The tails seem to tell us why that is,” said Posselt, adding that the pulsars’ spin and magnetic axis orientations influence what kind of emission is seen on Earth. Geminga may have magnetic poles quite close to the top and bottom of the object, and nearly aligned spin poles, much like Earth. On ...
Explosive sources of the highest energy radiation
... the EM spectrum, it is only self-evident. in the past couple of decades The primary channels to discovered around that sensitive gamma-ray produce gamma-rays at these 2000 distinct telescopes have opened our energies can be split into hadgamma-ray eyes to how the sky looks at ronic and leptonic proc ...
... the EM spectrum, it is only self-evident. in the past couple of decades The primary channels to discovered around that sensitive gamma-ray produce gamma-rays at these 2000 distinct telescopes have opened our energies can be split into hadgamma-ray eyes to how the sky looks at ronic and leptonic proc ...
Eight billion asteroids in the Oort cloud
... & Levison 2004). Approximating this as a sharp cut-off, we find that rocky bodies from within 2.5 au of the Sun should be ∼4 per cent of the total population of the Oort cloud. To better understand the fate of the particles that survive the simulations, we plot the dynamical lifetime of small bodies ...
... & Levison 2004). Approximating this as a sharp cut-off, we find that rocky bodies from within 2.5 au of the Sun should be ∼4 per cent of the total population of the Oort cloud. To better understand the fate of the particles that survive the simulations, we plot the dynamical lifetime of small bodies ...
chd_ddu_a_ldr200906
... A new semi-automatic processing code was developed in 2008. Stratospheric particles data processing is divided into three steps. First, atmospheric molecular optical properties are calculated, from daily PTU profiles, provided by the French Met Office (Météo-France) radiosondes. Then, total backgrou ...
... A new semi-automatic processing code was developed in 2008. Stratospheric particles data processing is divided into three steps. First, atmospheric molecular optical properties are calculated, from daily PTU profiles, provided by the French Met Office (Météo-France) radiosondes. Then, total backgrou ...
The Kuiper Belt and Other Debris Disks - UCLA
... Jupiter (310 M⊕ ) and Saturn (95 M⊕ ) are so-called because, mass-wise, they are dominated by hydrogen and helium. Throughout the bulk of each planet these gases are compressed, however, into a degenerate (metallic) liquid that supports convection and sustains a magnetic field through dynamo action. ...
... Jupiter (310 M⊕ ) and Saturn (95 M⊕ ) are so-called because, mass-wise, they are dominated by hydrogen and helium. Throughout the bulk of each planet these gases are compressed, however, into a degenerate (metallic) liquid that supports convection and sustains a magnetic field through dynamo action. ...
The 2006 RBSE Journal - National Optical Astronomy Observatory
... meridian line is a circle that passes through the two poles of the celestial sphere and the zenith of any observer. To receive time on the New Mexico Skies telescopes, I had to send a proposal to Dr. Steven Croft at the National Optical Astronomy Observatory to get a grant to use one of the telescop ...
... meridian line is a circle that passes through the two poles of the celestial sphere and the zenith of any observer. To receive time on the New Mexico Skies telescopes, I had to send a proposal to Dr. Steven Croft at the National Optical Astronomy Observatory to get a grant to use one of the telescop ...
Global Seismology of the Sun
... programme were three helioseismology related ones, the ‘Solar Oscillations Investigation’ (SOI) using the Michelson Doppler Imager(MDI: Scherrer et al., 1995), ‘Variability of solar Irradiance and Gravity Oscillations’ (VIRGO: Lazrek et al., 1997) and ‘Global Oscillations at Low Frequencies’ (GOLF: ...
... programme were three helioseismology related ones, the ‘Solar Oscillations Investigation’ (SOI) using the Michelson Doppler Imager(MDI: Scherrer et al., 1995), ‘Variability of solar Irradiance and Gravity Oscillations’ (VIRGO: Lazrek et al., 1997) and ‘Global Oscillations at Low Frequencies’ (GOLF: ...
Cryoelectron-Microscopy Image Reconstruction of Symmetry
... The small, possibly random features obtained in step 2 of cycle 1 were sufficient to provide increasing selection power in subsequent cycles. (4) A new map was calculated as in (2). (5) Steps (3) and (4) were repeated iteratively until the process converged (i.e., orientations became stable). The lo ...
... The small, possibly random features obtained in step 2 of cycle 1 were sufficient to provide increasing selection power in subsequent cycles. (4) A new map was calculated as in (2). (5) Steps (3) and (4) were repeated iteratively until the process converged (i.e., orientations became stable). The lo ...
Advanced Composition Explorer
Advanced Composition Explorer (ACE) is a NASA Explorers program Solar and space exploration mission to study matter comprising energetic particles from the solar wind, the interplanetary medium, and other sources. Real-time data from ACE is used by the NOAA Space Weather Prediction Center to improve forecasts and warnings of solar storms. The ACE robotic spacecraft was launched August 25, 1997 and entered a Lissajous orbit close to the L1 Lagrangian point (which lies between the Sun and the Earth at a distance of some 1.5 million km from the latter) on December 12, 1997. The spacecraft is currently operating at that orbit. Because ACE is in a non-Keplerian orbit, and has regular station-keeping maneuvers, the orbital parameters at right are only approximate. The spacecraft is still in generally good condition in 2015, and is projected to have enough fuel to maintain its orbit until 2024. NASA Goddard Space Flight Center managed the development and integration of the ACE spacecraft.