Astroparticle Physics V 3 p 239 257 1995
... state at 190.4 keV of *lKr. The signal for a monocromatic neutrino will consist of a delayed coincidence between an electron pulse corresponding to the neutrino energy decreased by 471 keV, and the 190.4 keV de-excitation pulse. The coincidence time (13.1 s in average) allows an efficient use of lar ...
... state at 190.4 keV of *lKr. The signal for a monocromatic neutrino will consist of a delayed coincidence between an electron pulse corresponding to the neutrino energy decreased by 471 keV, and the 190.4 keV de-excitation pulse. The coincidence time (13.1 s in average) allows an efficient use of lar ...
Evidence for a signature of the galactic bar in the solar neighbourhood
... Stars with metallicities atypical of the young local disc, i.e. with [M/H] > 0.25 or < −0.30, form the best test sample to investigate large scale perturbations of stellar orbits. The metal poor group contains stars born inside and outside the solar orbit, whereas the metal-rich group consists of st ...
... Stars with metallicities atypical of the young local disc, i.e. with [M/H] > 0.25 or < −0.30, form the best test sample to investigate large scale perturbations of stellar orbits. The metal poor group contains stars born inside and outside the solar orbit, whereas the metal-rich group consists of st ...
Injection mechanisms of short-lived radionuclides and their
... Ca in the early Solar System was demonstrated by Srinivasan et al. (1996), in a detailed K isotope study of CAIs from the Efremovka meteorite that defined an initial 41Ca abundance of 1.4 108. Sahijpal et al. (1998) confirmed the former existence of 41Ca in the early Solar System, and further esta ...
... Ca in the early Solar System was demonstrated by Srinivasan et al. (1996), in a detailed K isotope study of CAIs from the Efremovka meteorite that defined an initial 41Ca abundance of 1.4 108. Sahijpal et al. (1998) confirmed the former existence of 41Ca in the early Solar System, and further esta ...
Shape of a slowly rotating star measured by asteroseismology
... stellar model that best explains the observed mode frequencies implies that KIC 11145123 is a terminal-age main sequence A star. It has a small convective core (r < 0.04 R), in which the fraction of hydrogen content is less than 5%. Outside this convective core, energy is transported by radiation up ...
... stellar model that best explains the observed mode frequencies implies that KIC 11145123 is a terminal-age main sequence A star. It has a small convective core (r < 0.04 R), in which the fraction of hydrogen content is less than 5%. Outside this convective core, energy is transported by radiation up ...
GS107_2010.1_PosterProject_solarsystem
... What is your object made of? What is its internal structure? What does its surface look like? What processes have shaped the surface? Does it have an atmosphere? What is the atmosphere made of? Additional Topics Discuss in an additional section any additional interesting aspects of your topic. (This ...
... What is your object made of? What is its internal structure? What does its surface look like? What processes have shaped the surface? Does it have an atmosphere? What is the atmosphere made of? Additional Topics Discuss in an additional section any additional interesting aspects of your topic. (This ...
Edward RD Scott and Horton E. Newsom Institute of
... In Figs. 1-3 we show compositional plots for the nine chondrite groups; Figs. 1 and 3 show mean group compositions, whereas Fig. 2 shows compositions for individual chondrites. Plots of abundances of refrac tory lithophile elements [21] or refractory lithophile and siderophile elements (Fig. 1) sho ...
... In Figs. 1-3 we show compositional plots for the nine chondrite groups; Figs. 1 and 3 show mean group compositions, whereas Fig. 2 shows compositions for individual chondrites. Plots of abundances of refrac tory lithophile elements [21] or refractory lithophile and siderophile elements (Fig. 1) sho ...
Solar Physics with LOFAR
... The basic principle of LOFAR measurements is to digitize the signals of all station antennae and to send the data to the Central Processing System (CPS). There, the data are further processed. The observed sources in the sky are selected through beamforming, i.e. correlation with proper phase delays ...
... The basic principle of LOFAR measurements is to digitize the signals of all station antennae and to send the data to the Central Processing System (CPS). There, the data are further processed. The observed sources in the sky are selected through beamforming, i.e. correlation with proper phase delays ...
the next decade - Lowell Observatory
... a color term (due to its dependence on nearby continua) that render it unsuitable for direct physical comparison of stars of different temperature, or for interpretation in the context of absolutely calibrated data or models, such as the theoretical flux-calibrated HK profiles being produced at that ...
... a color term (due to its dependence on nearby continua) that render it unsuitable for direct physical comparison of stars of different temperature, or for interpretation in the context of absolutely calibrated data or models, such as the theoretical flux-calibrated HK profiles being produced at that ...
The Sun`s journey through the local interstellar medium: the
... CLOUDY radiative transfer code, which incorporates a wide range of physical processes to model a cloud under the conditions of photoionization equilibrium (Ferland et al., 1998). The models are constrained by observations of the CLIC towards CMa (Gry and Jenkins, 2001), observations of pickup ions ...
... CLOUDY radiative transfer code, which incorporates a wide range of physical processes to model a cloud under the conditions of photoionization equilibrium (Ferland et al., 1998). The models are constrained by observations of the CLIC towards CMa (Gry and Jenkins, 2001), observations of pickup ions ...
Earliest Datable Records of Aurora
... Stephenson et al. (2004) made a positive interpretation of #2 because its last signs - 2 DANNA “2 double hours” indicate the duration of the phenomenon and there is no other light source that can supply red light for as long as 4 hours. Their conclusion can be reinforced with the flat topography in ...
... Stephenson et al. (2004) made a positive interpretation of #2 because its last signs - 2 DANNA “2 double hours” indicate the duration of the phenomenon and there is no other light source that can supply red light for as long as 4 hours. Their conclusion can be reinforced with the flat topography in ...
the spitzer space telescope mission
... is critical to the achievement of a long mission lifetime with a small cryostat, but requires excellent thermal isolation between warm and cold components as well as tight restrictions on the orientation of the flight hardware with respect to the Sun. The CTA outer shell is painted with high-emissiv ...
... is critical to the achievement of a long mission lifetime with a small cryostat, but requires excellent thermal isolation between warm and cold components as well as tight restrictions on the orientation of the flight hardware with respect to the Sun. The CTA outer shell is painted with high-emissiv ...
Inti didn`t form in the X wind (and neither did most CAIs)
... timescale as net flow of gas inward: crystalline silicates (Gail 2001) or CAIs (Cuzzi et al. 2003). But outward radial diffusion is always "upstream" and limited (Cuzzi & Hogan 2003; Cuzzi et al. 2003). In a decretion disk, outward radial diffusion goes "with the flow": the majority of material can ...
... timescale as net flow of gas inward: crystalline silicates (Gail 2001) or CAIs (Cuzzi et al. 2003). But outward radial diffusion is always "upstream" and limited (Cuzzi & Hogan 2003; Cuzzi et al. 2003). In a decretion disk, outward radial diffusion goes "with the flow": the majority of material can ...
CENTRAL TEXAS COLLEGE
... given in those cases where the student has completed the majority of the course work, but because of personal illness, death in the immediate family, or military orders, the student is unable to complete the requirements for a course...” Prior approval from the instructor is required before the grad ...
... given in those cases where the student has completed the majority of the course work, but because of personal illness, death in the immediate family, or military orders, the student is unable to complete the requirements for a course...” Prior approval from the instructor is required before the grad ...
SELF-TEST: True or False? 1. The Sun is a rather
... 2. The average density of the Sun is significantly greater than the density of the Earth. HINT 3. The Sun's diameter is about 10 times that of Earth. HINT 4. The Sun's differential rotation indicates that it is not solid. HINT 5. In the solar radiation zone, the gas is partly ionized. HINT 6. Convec ...
... 2. The average density of the Sun is significantly greater than the density of the Earth. HINT 3. The Sun's diameter is about 10 times that of Earth. HINT 4. The Sun's differential rotation indicates that it is not solid. HINT 5. In the solar radiation zone, the gas is partly ionized. HINT 6. Convec ...
Neutral Density and Crosswind Determination from
... The aerodynamic force coefficient vector Ca is a function of the satellite shape, its orientation with respect to the flow, and the nature of the aerodynamic interaction with the atmospheric particles. These aspects will be discussed further in the next paragraphs. The area Aref is a fixed reference va ...
... The aerodynamic force coefficient vector Ca is a function of the satellite shape, its orientation with respect to the flow, and the nature of the aerodynamic interaction with the atmospheric particles. These aspects will be discussed further in the next paragraphs. The area Aref is a fixed reference va ...
Shortв•`lived radioactivity in the early solar system: The Superв•`AGB
... unclear and has been possibly interpreted as the imprint of CO self-shielding (see Ireland [2012] for a review). The mass-dependent fractionation effect shifts the O ratios along lines of slope approximately 0.5 (e.g., the terrestrial fractionation line, TFL in Fig. 1) and in CAIs is typically due t ...
... unclear and has been possibly interpreted as the imprint of CO self-shielding (see Ireland [2012] for a review). The mass-dependent fractionation effect shifts the O ratios along lines of slope approximately 0.5 (e.g., the terrestrial fractionation line, TFL in Fig. 1) and in CAIs is typically due t ...
Exospheres and Atmospheric Escape
... originate at altitudes below the nominal exobase (∼ 1450 km) (adapted from: Shematovich et al. 2003). This flux at 1500 km (∼ 1.2 × 108 amu/cm2 /s) is about an order of magnitude smaller than recent estimates based on Cassini data (see Sect. 4.4), but the source region of hot particles is the same ...
... originate at altitudes below the nominal exobase (∼ 1450 km) (adapted from: Shematovich et al. 2003). This flux at 1500 km (∼ 1.2 × 108 amu/cm2 /s) is about an order of magnitude smaller than recent estimates based on Cassini data (see Sect. 4.4), but the source region of hot particles is the same ...
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.