Space-time evolution of electron-beam driven electron holes and
... B 0 , are associated with similar structures in the plasma density, producing density filaments. It turns out that electronbeam driven plasmas, in general, develop such filaments at some stage of the evolution of the beam-driven waves. In view of the excitation of the LH waves near ω`h , which could ...
... B 0 , are associated with similar structures in the plasma density, producing density filaments. It turns out that electronbeam driven plasmas, in general, develop such filaments at some stage of the evolution of the beam-driven waves. In view of the excitation of the LH waves near ω`h , which could ...
THE SECULAR EVOLUTION OF THE PRIMORDIAL KUIPER BELT
... A model that rapidly computes the secular evolution of a gravitating disk-planet system is developed. The disk is treated as a nested set of gravitating rings, with the rings’/planets’ time evolution being governed by the classical Laplace-Lagrange solution for secular evolution but modified to accou ...
... A model that rapidly computes the secular evolution of a gravitating disk-planet system is developed. The disk is treated as a nested set of gravitating rings, with the rings’/planets’ time evolution being governed by the classical Laplace-Lagrange solution for secular evolution but modified to accou ...
Virtual Science Fair - Dark Matter Alexander Mashaal
... pull of the mass of itself. Scientists believe that it also makes the starlight brighter because of the way the MACHO bends the light. The gravity of the MACHO bends the light towards the other rays of starlight, from a far distance you can see both of the rays fused together which gives off double ...
... pull of the mass of itself. Scientists believe that it also makes the starlight brighter because of the way the MACHO bends the light. The gravity of the MACHO bends the light towards the other rays of starlight, from a far distance you can see both of the rays fused together which gives off double ...
Einstein, Black Holes and Gravity Waves, oh my! (x)
... • If I have a star, or black hole, just sitting in space then other things know where it is because of the curvature of space-time • If its just sitting there (or moving with a constant velocity) space-time isn’t changing • If it accelerates, then this information is passed through space-time at the ...
... • If I have a star, or black hole, just sitting in space then other things know where it is because of the curvature of space-time • If its just sitting there (or moving with a constant velocity) space-time isn’t changing • If it accelerates, then this information is passed through space-time at the ...
4gravitation - The Gravity Search
... 3. Relativity of simultaneity two events, simultaneous for one observer, may not be simultaneous for another observer if the observers are in relative motion. 4. Time dilation moving clocks are measured to tick more slowly than an observer's "stationary" clock. 5. Length contraction: Objects are mea ...
... 3. Relativity of simultaneity two events, simultaneous for one observer, may not be simultaneous for another observer if the observers are in relative motion. 4. Time dilation moving clocks are measured to tick more slowly than an observer's "stationary" clock. 5. Length contraction: Objects are mea ...
SQA Advanced Higher Physics Unit 3: Wave Phenomena
... electromagnetic spectrum. The visible spectrum extends from around 700 nm (red) to around 400 nm (blue) (1 nm = 10 -9 m). Longer wavelengths go through the infrared and microwaves to radio waves. Shorter wavelengths lead to ultraviolet, X-rays and gamma radiation (see Figure 1.2). The frequency of v ...
... electromagnetic spectrum. The visible spectrum extends from around 700 nm (red) to around 400 nm (blue) (1 nm = 10 -9 m). Longer wavelengths go through the infrared and microwaves to radio waves. Shorter wavelengths lead to ultraviolet, X-rays and gamma radiation (see Figure 1.2). The frequency of v ...
THE YELLOW SUPERGIANT PROGENITOR OF THE TYPE II
... the source not being spatially extended, (2) the absence of excess Hα emission, and (3) the poor fit to synthetic cluster spectral energy distributions (SEDs). It is unclear if a binary companion is contributing to the observed SED, although given the excellent correspondence of the observed photome ...
... the source not being spatially extended, (2) the absence of excess Hα emission, and (3) the poor fit to synthetic cluster spectral energy distributions (SEDs). It is unclear if a binary companion is contributing to the observed SED, although given the excellent correspondence of the observed photome ...
Master`s Thesis
... Regarding the work packages proposed in the work plan there had been very few changes and unexpected time plans. In particular the WP2 it was expected to last one week and finally lasted almost three weeks. WP3 and WP4 consisted on searching and analyzing data from specific space missions for each o ...
... Regarding the work packages proposed in the work plan there had been very few changes and unexpected time plans. In particular the WP2 it was expected to last one week and finally lasted almost three weeks. WP3 and WP4 consisted on searching and analyzing data from specific space missions for each o ...
Searching for Planets During Predicted Mesolensing Events: II
... have not deterred astronomers, with their familiarity of the universe of possible lenses and background sources, from predicting specific lensing events. In 1966, Feibelman suggested that the star 40 Eridani-a, a member of a triple which also contains a white dwarf, would pass close enough to a back ...
... have not deterred astronomers, with their familiarity of the universe of possible lenses and background sources, from predicting specific lensing events. In 1966, Feibelman suggested that the star 40 Eridani-a, a member of a triple which also contains a white dwarf, would pass close enough to a back ...
Black Holes - Max Planck Institute for Gravitational Physics
... against gravitational collapse by pressure generated by nuclear reactions. As the star uses up its nuclear “fuel”, it will cool and shrink. Can some non-thermal source of pressure balance gravity? Yes, but only up to a maximum mass of about two solar masses. (see later) More massive stars must eithe ...
... against gravitational collapse by pressure generated by nuclear reactions. As the star uses up its nuclear “fuel”, it will cool and shrink. Can some non-thermal source of pressure balance gravity? Yes, but only up to a maximum mass of about two solar masses. (see later) More massive stars must eithe ...
Dark Matter with Massive Bigravity Theory
... Because like masses attract and unlike ones repel we have anti-screening of ordinary masses by polarization masses in agreement with DM and MOND ...
... Because like masses attract and unlike ones repel we have anti-screening of ordinary masses by polarization masses in agreement with DM and MOND ...
Black hole tidal problem in the Fermi normal coordinates
... black hole, and equations of state (see Sec. V). If the condition (1) is satisfied outside a minimum orbital radius (e.g., r = 6GM/c2 for a star in a circular orbit around a Schwarzschild black hole where c and G are the speed of light and gravitational constant), a star will be tidally disrupted. A ...
... black hole, and equations of state (see Sec. V). If the condition (1) is satisfied outside a minimum orbital radius (e.g., r = 6GM/c2 for a star in a circular orbit around a Schwarzschild black hole where c and G are the speed of light and gravitational constant), a star will be tidally disrupted. A ...
The Dynamic Universe – space as a spherically closed energy system
... such a solution does not work in the framework of the theory of relativity, which is based on time as the fourth dimension. In the DU approach the fourth dimension has metric nature and time is a universal scalar allowing the definition of velocity and momentum equally in space directions and in the ...
... such a solution does not work in the framework of the theory of relativity, which is based on time as the fourth dimension. In the DU approach the fourth dimension has metric nature and time is a universal scalar allowing the definition of velocity and momentum equally in space directions and in the ...
Puzzling X-rays from the new colliding wind binary Wolf–Rayet 65
... has a period of a few days: the two data points obtained in 2003 April indicate constant count rates over at least a week. Moreover, two data points in the light curve separated by two months (2004 December and 2005 February) are similar, while there is an increase in emission by nearly 70 per cent ...
... has a period of a few days: the two data points obtained in 2003 April indicate constant count rates over at least a week. Moreover, two data points in the light curve separated by two months (2004 December and 2005 February) are similar, while there is an increase in emission by nearly 70 per cent ...
Supernovae and Gamma-Ray Bursts (draft)
... The second important explosion mechanism has nothing to do with massive stars, but is generally believed to occur in accreting CO white dwarfs when their mass approaches the Chandrasekhar mass. When the mass reaches ∼ 1.37 M⊙, carbon is ignited in or near the centre of the white dwarf. Initially, th ...
... The second important explosion mechanism has nothing to do with massive stars, but is generally believed to occur in accreting CO white dwarfs when their mass approaches the Chandrasekhar mass. When the mass reaches ∼ 1.37 M⊙, carbon is ignited in or near the centre of the white dwarf. Initially, th ...
Search for Pulsed Very High Energy Gamma Ray
... Pulsars were discovered in 1967, when Hewish and Bell were studying interplanetary scintillations of radio waves. The name pulsar stands for pulsating source of radio which already unveils the most important characteristic: the intensity of the observed emission is regularly pulsing in time. This pu ...
... Pulsars were discovered in 1967, when Hewish and Bell were studying interplanetary scintillations of radio waves. The name pulsar stands for pulsating source of radio which already unveils the most important characteristic: the intensity of the observed emission is regularly pulsing in time. This pu ...
The accretion properties of the intermediate mass Herbig Ae/Be stars
... § Herbig Ae/Be stars bridge the gap between low and high mass young stars and cover the mass where transition in accretion mode occurs. § Conducted largest spectral survey – 0.4 – 2.4 micron spectra of 90 objects § Determined spectral types, temperatures, radii, reddening in a homogeneous manner ...
... § Herbig Ae/Be stars bridge the gap between low and high mass young stars and cover the mass where transition in accretion mode occurs. § Conducted largest spectral survey – 0.4 – 2.4 micron spectra of 90 objects § Determined spectral types, temperatures, radii, reddening in a homogeneous manner ...
Galaxy Notes
... the shape of the other. Galaxies can even collide. If two rapidly moving galaxies collide, they may pass right through each other with little or no effect. ...
... the shape of the other. Galaxies can even collide. If two rapidly moving galaxies collide, they may pass right through each other with little or no effect. ...