1.2 Modeling of Harmonic Waves
... If this wave represents the movement of a particle, the particle speed would differ from the wave propagation speed where the particle path follows along the sine curve. The characteristics (A, λ, f, w and τ) used to describe the harmonic motion of a particle can also be used to describe the motion ...
... If this wave represents the movement of a particle, the particle speed would differ from the wave propagation speed where the particle path follows along the sine curve. The characteristics (A, λ, f, w and τ) used to describe the harmonic motion of a particle can also be used to describe the motion ...
Wu_Y_H
... • Since general relativity has a well known Newtonian limit, it is reasonable for us to argue that it should yield the Newtonian expression for all of quasi-local expressions in the covariant Newtonian space-time. • In this work, we verify that Komar integral can yield the Newtonian quasi-local mass ...
... • Since general relativity has a well known Newtonian limit, it is reasonable for us to argue that it should yield the Newtonian expression for all of quasi-local expressions in the covariant Newtonian space-time. • In this work, we verify that Komar integral can yield the Newtonian quasi-local mass ...
PDF only
... cannot be neglected at the typical particle scale, . In these conditions, gravity has compressed the nucleons so much that they are even closer than they usually are under the action of nuclear forces alone; they occupy the lowest available energy states and the temperature, although very large, is ...
... cannot be neglected at the typical particle scale, . In these conditions, gravity has compressed the nucleons so much that they are even closer than they usually are under the action of nuclear forces alone; they occupy the lowest available energy states and the temperature, although very large, is ...
Partitioning and Divide and Conquer Strategies - Guy Tel-Zur
... Sequential Code Overall gravitational N-body computation can be described by: for (t = 0; t < tmax; t++) /* for each time period */ for (i = 0; i < N; i++) { /* for each body */ F = Force_routine(i); /* compute force on ith body */ v[i]new = v[i] + F * dt / m; /* compute new velocity */ x[i]new = x ...
... Sequential Code Overall gravitational N-body computation can be described by: for (t = 0; t < tmax; t++) /* for each time period */ for (i = 0; i < N; i++) { /* for each body */ F = Force_routine(i); /* compute force on ith body */ v[i]new = v[i] + F * dt / m; /* compute new velocity */ x[i]new = x ...
SPY — The ESO Supernovae Type Ia Progenitor Survey
... DO white dwarfs). We routinely measure RVs with an accuracy of about 2 km/s, therefore running only a very small risk of missing a merger precursor, which have orbital velocities of 150 km/s or higher. The large programme was finished at the end of last semester. A total of 1014 stars were observed ...
... DO white dwarfs). We routinely measure RVs with an accuracy of about 2 km/s, therefore running only a very small risk of missing a merger precursor, which have orbital velocities of 150 km/s or higher. The large programme was finished at the end of last semester. A total of 1014 stars were observed ...
Properties of Stars Measuring Stars Apparent Magnitude, m Range
... An eclipsing binary is a pair of stars where one passes in front of the other in our line of sight. From the time taken for each eclipse, the diameters of the stars can be deduced if the stars are too close together to visually separate, then you see one star winking ...
... An eclipsing binary is a pair of stars where one passes in front of the other in our line of sight. From the time taken for each eclipse, the diameters of the stars can be deduced if the stars are too close together to visually separate, then you see one star winking ...
- Free Documents
... Modern Cosmology is based on Einsteins view of gravity which is an extension of Special Relativity developped by Einstein in . Special Relativity SR is the physical theory of measurement in inertial frames of reference proposed in by Albert Einstein after the considerable and independent contributio ...
... Modern Cosmology is based on Einsteins view of gravity which is an extension of Special Relativity developped by Einstein in . Special Relativity SR is the physical theory of measurement in inertial frames of reference proposed in by Albert Einstein after the considerable and independent contributio ...
Supplemental Educational Support Materials
... Astronomers want to study the very distant galaxies seen in the Hubble Ultra Deep Field because those galaxies are very young. By studying nearby galaxies and those that are far away, astronomers can see that galaxies change. Seeing very young galaxies allows scientists to put together a more comple ...
... Astronomers want to study the very distant galaxies seen in the Hubble Ultra Deep Field because those galaxies are very young. By studying nearby galaxies and those that are far away, astronomers can see that galaxies change. Seeing very young galaxies allows scientists to put together a more comple ...
The fate of black hole singularities and the parameters of the
... mystery, which has stubornly resisted solution despite enormous progress in our understanding of the fundamental interactions, is deepened when one tries to understand why so many of the fundamental dimensionless constants that describe the masses and interactions strengths are very large or very sm ...
... mystery, which has stubornly resisted solution despite enormous progress in our understanding of the fundamental interactions, is deepened when one tries to understand why so many of the fundamental dimensionless constants that describe the masses and interactions strengths are very large or very sm ...
The End of the Dark Ages
... rely on H2 cooling to ignite internal star formation. Thus, the the fate of a virialized lump depends crucially on its ability to rapidly increase its H2 content during the collapse phase. This condition is met only by larger halos implying that for each virialization redshift there will exist some ...
... rely on H2 cooling to ignite internal star formation. Thus, the the fate of a virialized lump depends crucially on its ability to rapidly increase its H2 content during the collapse phase. This condition is met only by larger halos implying that for each virialization redshift there will exist some ...
Spinar Paradigm
... event. A spinar can be viewed as an intermediate state of a collapsing object whose lifetime is determined by the time scale of dissipation of the angular momentum. As Lipunova & Lipunov (1998) pointed out, the centrifugal barrier could explain the long (from several seconds to several hours) durati ...
... event. A spinar can be viewed as an intermediate state of a collapsing object whose lifetime is determined by the time scale of dissipation of the angular momentum. As Lipunova & Lipunov (1998) pointed out, the centrifugal barrier could explain the long (from several seconds to several hours) durati ...
Massive close binaries, observational characteristics - UvA-DARE
... Blaauw (1993) in an important recent paper showed that 6 out of 7 wellstudied runaway OB stars are rapid rotators and have a higher than normal Heabundance, characteristics just as expected for the post-mass transfer mass-gaining components of massive close binaries (the cause for the rapid rotation ...
... Blaauw (1993) in an important recent paper showed that 6 out of 7 wellstudied runaway OB stars are rapid rotators and have a higher than normal Heabundance, characteristics just as expected for the post-mass transfer mass-gaining components of massive close binaries (the cause for the rapid rotation ...
Which Way? Both Ways: Particle
... wave pattern, and watch it for a long time—imagine watching a duck bobbing up and down on a lake, say. If you watch carefully, you’ll see that the disturbance gets bigger and smaller in a very regular way—sometimes the duck is higher up, sometimes lower down—and makes a pattern in time very much lik ...
... wave pattern, and watch it for a long time—imagine watching a duck bobbing up and down on a lake, say. If you watch carefully, you’ll see that the disturbance gets bigger and smaller in a very regular way—sometimes the duck is higher up, sometimes lower down—and makes a pattern in time very much lik ...
Binary Stars
... All combinations of the previous properties are possible Many are unknown as they simply have not been seen to vary (line of sight / observed) Binary Stars are the fundamental way in which we understand stars (and star systems): their formation, evolution & death. Remember --Three out of every ...
... All combinations of the previous properties are possible Many are unknown as they simply have not been seen to vary (line of sight / observed) Binary Stars are the fundamental way in which we understand stars (and star systems): their formation, evolution & death. Remember --Three out of every ...
Magnetized Gravitational Collapse & Star Formation
... (Allen, Li, & Shu 2003; Shu, Galli, & Lizano 2005). • Annihilation of split monopole is replaced by multipoles of stellar field sustained by dynamo action. • Latter fields are measured in T Tauri stars through Zeeman broadening by Basri, Marcy, & Valenti (1992) and Johns-Krull, Valenti, & Koresko ...
... (Allen, Li, & Shu 2003; Shu, Galli, & Lizano 2005). • Annihilation of split monopole is replaced by multipoles of stellar field sustained by dynamo action. • Latter fields are measured in T Tauri stars through Zeeman broadening by Basri, Marcy, & Valenti (1992) and Johns-Krull, Valenti, & Koresko ...
Gamma-Ray Bursts: The Brightest Explosions in the Universe Arne
... SPEED OF LIGHT - UNIFICATION THEORIES OF RELATIVITY AND QUANTUM MECHANICS ALLOW THE SPACE TO BE FOAMY -> HIGH-ENERGY GAMMA-RAYS MOVE SLOWER THAN LOW-ENERGY PHOTONS ...
... SPEED OF LIGHT - UNIFICATION THEORIES OF RELATIVITY AND QUANTUM MECHANICS ALLOW THE SPACE TO BE FOAMY -> HIGH-ENERGY GAMMA-RAYS MOVE SLOWER THAN LOW-ENERGY PHOTONS ...
Observations of binary systems with pulsating components
... • Spectroscopic binaries: stars which exhibit periodic displacement of their spectral lines owing to Doppler effect caused by orbital motion. • Depending on components’ relative brightness, the observed spectrum will show the displacement of lines of one or both components (if a star is too faint, i ...
... • Spectroscopic binaries: stars which exhibit periodic displacement of their spectral lines owing to Doppler effect caused by orbital motion. • Depending on components’ relative brightness, the observed spectrum will show the displacement of lines of one or both components (if a star is too faint, i ...
50 Years of Quasars
... First Texas Symposium on Relativistic Astrophysics, Named Quasars but name not in general use for many years ...
... First Texas Symposium on Relativistic Astrophysics, Named Quasars but name not in general use for many years ...