Ice Core Records - Chandra X
... unique solar proton events. These peaks are several standard deviations above the mean. It is likely that these anomalies result from the primary production of nitrate (NO3-) in the atmosphere – therefore there has to be an enhanced supply of nitrate in the stratosphere. In the GSIP2-H core segment ...
... unique solar proton events. These peaks are several standard deviations above the mean. It is likely that these anomalies result from the primary production of nitrate (NO3-) in the atmosphere – therefore there has to be an enhanced supply of nitrate in the stratosphere. In the GSIP2-H core segment ...
Lecture 13 Presupernova Models, Core Collapse and Bounce
... 1047 (1983)). This is also approximately equivalent to the sonic core . This part of the core is called homologous because it can be shown that within it, vcollapse is proportional to radius. Thus the homologous core collapses in a sef similar fashion. Were = 4/3 for the entire iron core, the enti ...
... 1047 (1983)). This is also approximately equivalent to the sonic core . This part of the core is called homologous because it can be shown that within it, vcollapse is proportional to radius. Thus the homologous core collapses in a sef similar fashion. Were = 4/3 for the entire iron core, the enti ...
Chapter V Conclusions Radioactive isotopes
... semi-empirical approach is best Suited for this purpose. Accurate measurement of radioisotope activity coupled with information on shapes, sizes and shielding depths in meteorite bodies provides the starting point for such an approach. The main results and conclusions arrived from the work on these ...
... semi-empirical approach is best Suited for this purpose. Accurate measurement of radioisotope activity coupled with information on shapes, sizes and shielding depths in meteorite bodies provides the starting point for such an approach. The main results and conclusions arrived from the work on these ...
Slides from Lecture19 - Department of Physics & Astronomy
... Determining Size of MW Galaxy • We have not always known that the diameter of our Galaxy is ~ 50 kpc (as illustrated in following slide) • For example, Herschel’s map of our Galaxy (1785) based on star counts … – Thin disk not much more than 1 kpc across – Sun approximately at center of disk ...
... Determining Size of MW Galaxy • We have not always known that the diameter of our Galaxy is ~ 50 kpc (as illustrated in following slide) • For example, Herschel’s map of our Galaxy (1785) based on star counts … – Thin disk not much more than 1 kpc across – Sun approximately at center of disk ...
Lecture 2: Theory - Laboratory for Atmospheric and Space Physics
... • Are there additional (non-photospheric) sources of waves / turbulence / heating for open-field regions? (e.g., flux cancellation events) ...
... • Are there additional (non-photospheric) sources of waves / turbulence / heating for open-field regions? (e.g., flux cancellation events) ...
here - The Planetary Chemistry Laboratory
... (AGB, carbon stars; Merrill 1952, Tc) No more nucleosynthesis, white dwarfs ...
... (AGB, carbon stars; Merrill 1952, Tc) No more nucleosynthesis, white dwarfs ...
Persistence of the Gleissberg 88-year solar cycle over
... the Gleissberg cycle of mean sunspot numbers. In another work by Sofia et al. [1985] the historical record of the Sun’s diameter obtained from timings of eclipses was subject to harmonic analysis with one period equal to 90 years. The amplitude of that cycle was inferred to be little less than ±0.5 ...
... the Gleissberg cycle of mean sunspot numbers. In another work by Sofia et al. [1985] the historical record of the Sun’s diameter obtained from timings of eclipses was subject to harmonic analysis with one period equal to 90 years. The amplitude of that cycle was inferred to be little less than ±0.5 ...
259_1.pdf
... A noticeable difference between the two solutions is the shape of the total electron distributions. Their reduced distributions in the parallel direction are shown in Fig. 1. We see that the total electron distribution deviates from a Maxwellian when KSEE is included. The formation of a significant ...
... A noticeable difference between the two solutions is the shape of the total electron distributions. Their reduced distributions in the parallel direction are shown in Fig. 1. We see that the total electron distribution deviates from a Maxwellian when KSEE is included. The formation of a significant ...
The abundance of 26Al-rich planetary systems in the Galaxy
... Iron-60 (τ = 3.7 Myr), which decays onto 60 Ni, is another key short-lived radionuclide whose origin is often discussed in conjunction with that of 26 Al (see below). Because mass-independent nickel isotopic anomalies are ubiquitous in CAIs (Birck & Lugmair 1988), the search for the earlier presence ...
... Iron-60 (τ = 3.7 Myr), which decays onto 60 Ni, is another key short-lived radionuclide whose origin is often discussed in conjunction with that of 26 Al (see below). Because mass-independent nickel isotopic anomalies are ubiquitous in CAIs (Birck & Lugmair 1988), the search for the earlier presence ...
Spectral measurements of visible solar direct
... Proton fluxes are integral 5-minute averages for energies > 10 MeV, given in particle flux unit (pfu) where 1 pfu = 1p/cm2s−1sr−1. The data are published in the comprehensive reports of "Solar-Geophysical Data" by NOAA, Boulder - Colorado, USA. ...
... Proton fluxes are integral 5-minute averages for energies > 10 MeV, given in particle flux unit (pfu) where 1 pfu = 1p/cm2s−1sr−1. The data are published in the comprehensive reports of "Solar-Geophysical Data" by NOAA, Boulder - Colorado, USA. ...
Spots on Ap Stars
... – Intensity vs. radial velocity vs. time – See Vogt and Penrod 1983 (PASP, 95, 565) ...
... – Intensity vs. radial velocity vs. time – See Vogt and Penrod 1983 (PASP, 95, 565) ...
The role of the sun in climate forcing
... acting on di!erent time scales ranging from minutes to millennia and how the climate system reacts to changes in this forcing. Changes of the global insolation can be related to the nuclear fusion in the core of the Sun, the energy transport through the radiative zone and the convection zone, the em ...
... acting on di!erent time scales ranging from minutes to millennia and how the climate system reacts to changes in this forcing. Changes of the global insolation can be related to the nuclear fusion in the core of the Sun, the energy transport through the radiative zone and the convection zone, the em ...
3D View of a Comet`s Neighborhood
... locations. The mass (and charge) of each simulated particle is typically larger than the actual physical particles, but the ensemble yields more complex collective behaviors than would a fully fluid-dynamic model. In particular, the simulations capture nonequilibrium systems such as collisionless pl ...
... locations. The mass (and charge) of each simulated particle is typically larger than the actual physical particles, but the ensemble yields more complex collective behaviors than would a fully fluid-dynamic model. In particular, the simulations capture nonequilibrium systems such as collisionless pl ...
Does the Sun affect the Earth`s climate?
... to simulate the cosmic rays, and to look for aerosols produced in a reaction chamber containing air and trace gases. The temperature and pressure would be adjustable to simulate conditions at different levels in the atmosphere. Kirkby assembled a consortium of 50 atmospheric, solar–terrestrial and p ...
... to simulate the cosmic rays, and to look for aerosols produced in a reaction chamber containing air and trace gases. The temperature and pressure would be adjustable to simulate conditions at different levels in the atmosphere. Kirkby assembled a consortium of 50 atmospheric, solar–terrestrial and p ...
BDW Lesson 1g - Ohio Academic Standards
... Application & Anomaly Items listed in Table 1. It should be noted that the students will demonstrate their ability to perform critical thinking skills by incorporating known scientific anomalies into the research activity. 13. The teacher hands out Attachment 2 as a completed example of what type of ...
... Application & Anomaly Items listed in Table 1. It should be noted that the students will demonstrate their ability to perform critical thinking skills by incorporating known scientific anomalies into the research activity. 13. The teacher hands out Attachment 2 as a completed example of what type of ...
PDF
... method has been developed for 3D reconstruction of the global coronal magnetic field (Kramar et al., 2006, 2013), and recently, first 3D reconstruction of the global coronal magnetic field has been performed based on the CoMP data (Kramar et al., 2016). Another, thought implicit but also based on co ...
... method has been developed for 3D reconstruction of the global coronal magnetic field (Kramar et al., 2006, 2013), and recently, first 3D reconstruction of the global coronal magnetic field has been performed based on the CoMP data (Kramar et al., 2016). Another, thought implicit but also based on co ...
Composition of the Sun - Indiana University Astronomy
... • The iron abundance you derive for the Sun, in bracket notation (see below) • A table of the abundances of the other elements you included, also in bracket notation in the form [m/H]. The table should include the mean abundance and standard deviation and the number of lines used of each element. An ...
... • The iron abundance you derive for the Sun, in bracket notation (see below) • A table of the abundances of the other elements you included, also in bracket notation in the form [m/H]. The table should include the mean abundance and standard deviation and the number of lines used of each element. An ...
here - GLORIA Project
... surface. Sunspots are areas of the surface cooler than their surroundings so they appear as dark images. After several years of data, it has been discovered that the amount of spots on the surface of the sun rises every 11 years or so, so that the cycle of activity is for 11 years (known as "undecen ...
... surface. Sunspots are areas of the surface cooler than their surroundings so they appear as dark images. After several years of data, it has been discovered that the amount of spots on the surface of the sun rises every 11 years or so, so that the cycle of activity is for 11 years (known as "undecen ...
The Sunspots - Scientific Research Publishing
... 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 substantial increase in sun’s activity. The most important expression of that activity is the emission of large quan ...
... 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 substantial increase in sun’s activity. The most important expression of that activity is the emission of large quan ...
A Novel Forecasting System for Solar Particle Events and Flares
... NOAA/SWPC [24]. At a higher energy limit of SEP events (E > 433 MeV), GLE Alert Plus – another operational forecasting tool – issues alerts pertaining to the start time of a ground level enhancement (GLE) event utilizing the real-time data from the Neutron Monitor Database (NMDB) (www.nmdb.eu) [25]. ...
... NOAA/SWPC [24]. At a higher energy limit of SEP events (E > 433 MeV), GLE Alert Plus – another operational forecasting tool – issues alerts pertaining to the start time of a ground level enhancement (GLE) event utilizing the real-time data from the Neutron Monitor Database (NMDB) (www.nmdb.eu) [25]. ...
Folie 1
... could begin with a very large mass, may be even thousands of solar masses. Why, then, don’t we get such massive stars? There are a number of reasons, but one is that as the density increases hugely. 375k 3 ...
... could begin with a very large mass, may be even thousands of solar masses. Why, then, don’t we get such massive stars? There are a number of reasons, but one is that as the density increases hugely. 375k 3 ...
PDF - Isaac Scientific Publishing
... my new computer program for calculation of ancient solar eclipses was good enough. Therefore, it was too early to try to publish the result in a scientific journal. The computer program has now been successfully tested during more than 30 years against all available well-documented total solar eclip ...
... my new computer program for calculation of ancient solar eclipses was good enough. Therefore, it was too early to try to publish the result in a scientific journal. The computer program has now been successfully tested during more than 30 years against all available well-documented total solar eclip ...
Multidimensional and inhomogeneity effects on scattering
... spatial distribution has been smeared with a 0.5”-wide mean filter in order to account for the finite resolving power of today’s ground based instruments. It is important to notice that Stokes Q is enhanced near the edges of the prominence due to the multidimensional radiative transfer effects. Stokes ...
... spatial distribution has been smeared with a 0.5”-wide mean filter in order to account for the finite resolving power of today’s ground based instruments. It is important to notice that Stokes Q is enhanced near the edges of the prominence due to the multidimensional radiative transfer effects. Stokes ...
Coronal magnetic topology and the production of solar impulsive
... electron events: Electrons of ∼0.4−9 keV are released earlier than type III radio emission, while the injection of ∼13−300 keV electrons starts when the associated CME reaches ∼1 to 6 Rs . The delayed injection of high-energy electrons can be due either to the acceleration by CME-driven shocks or to ...
... electron events: Electrons of ∼0.4−9 keV are released earlier than type III radio emission, while the injection of ∼13−300 keV electrons starts when the associated CME reaches ∼1 to 6 Rs . The delayed injection of high-energy electrons can be due either to the acceleration by CME-driven shocks or to ...
Solar observation
Solar observation is the scientific endeavor of studying the Sun and its behavior and relation to the Earth and the remainder of the Solar System. Deliberate solar observation began thousands of years ago. That initial era of direct observation gave way to telescopes in the 1600s followed by satellites in the twentieth century.