EVIDENCE FOR BINARY ORBITAL MOTION OF A QUASAR
... 1988a; Koratkar, & Gaskell 1991a, 1991b; Crenshaw & Blackwell 1990; Maoz et al. 1991; Korista et al. 1995), although generalizing from these to 3C 390.3 objects might be unwise. 2. Supermassive binar y black holes.—Gaskell (1983) suggested that 3C 390.3 quasars are ‘‘spectroscopic binaries’’ with ea ...
... 1988a; Koratkar, & Gaskell 1991a, 1991b; Crenshaw & Blackwell 1990; Maoz et al. 1991; Korista et al. 1995), although generalizing from these to 3C 390.3 objects might be unwise. 2. Supermassive binar y black holes.—Gaskell (1983) suggested that 3C 390.3 quasars are ‘‘spectroscopic binaries’’ with ea ...
Chapter 25 - apel slice
... deep in a valley. Many of the radio waves will be unable to pass through or around the surrounding mountains and the town will be unable to receive the signals. In situations such as this, it is important to protect the radio waves from being disturbed. One way that this can be accomplished is to se ...
... deep in a valley. Many of the radio waves will be unable to pass through or around the surrounding mountains and the town will be unable to receive the signals. In situations such as this, it is important to protect the radio waves from being disturbed. One way that this can be accomplished is to se ...
Relativistic stellar aberration for the Space Interferometry Mission
... gravitational effects on astrometry from within the solar system will start to become apparent, such as the monopole and the quadrupole components of the gravitational fields of the planets and the gravito-magnetic effects caused by their motions and rotations. Thus, the identification of all possib ...
... gravitational effects on astrometry from within the solar system will start to become apparent, such as the monopole and the quadrupole components of the gravitational fields of the planets and the gravito-magnetic effects caused by their motions and rotations. Thus, the identification of all possib ...
Astroparticle physics A.M. van den Berg () O. Scholten
... If (t=0) > 1 the Universe would have recollapsed at once If (t=0) < 1 the Universe would have cooled very quickly HORIZON PROBLEM Regions on the CMB sky separated by more than 1o had no time to interact, yet their temperature is the same to 100 ppm What is needed An initial condition of the Univer ...
... If (t=0) > 1 the Universe would have recollapsed at once If (t=0) < 1 the Universe would have cooled very quickly HORIZON PROBLEM Regions on the CMB sky separated by more than 1o had no time to interact, yet their temperature is the same to 100 ppm What is needed An initial condition of the Univer ...
Investigating Black Hole Kicks
... I arrived here in Lund Observatory last October. From the very first moment, I had the impression that there was something special about this Department: I immediately felt comfortable and surrounded by cheerful and dynamic people. Doing science is also made by the people you work with and here in L ...
... I arrived here in Lund Observatory last October. From the very first moment, I had the impression that there was something special about this Department: I immediately felt comfortable and surrounded by cheerful and dynamic people. Doing science is also made by the people you work with and here in L ...
07.01.2015 - Erwin Sitompul
... about the origin of an x axis. One important property of oscillatory motion is its frequency, or number of oscillations that are completed each second. The symbol for frequency is f, and its SI unit is the hertz (abbreviated Hz). 1 hertz = 1 Hz = 1 oscillation per second = 1 s–1 Erwin Sitompul ...
... about the origin of an x axis. One important property of oscillatory motion is its frequency, or number of oscillations that are completed each second. The symbol for frequency is f, and its SI unit is the hertz (abbreviated Hz). 1 hertz = 1 Hz = 1 oscillation per second = 1 s–1 Erwin Sitompul ...
Rainbows with carbon nanotubes
... 4,145 meters near the summit of Mauna Kea in the U.S. state of Hawaii. Both telescopes feature 10 m primary mirrors, currently among the largest astronomical telescopes in use. The combination of an excellent site, large optics and innovative instruments has created the two most scientifically produ ...
... 4,145 meters near the summit of Mauna Kea in the U.S. state of Hawaii. Both telescopes feature 10 m primary mirrors, currently among the largest astronomical telescopes in use. The combination of an excellent site, large optics and innovative instruments has created the two most scientifically produ ...
Effect of Ionosphere on Radio Wave Propagation
... greatest significance at midday when the suns effect greatest. Its ionization is not enough to bend the wave directions except for lower frequencies. It will only affect wave whose frequencies level are 500km. it has negative effect on propagation of sky wave, because it will absorb the energy from ...
... greatest significance at midday when the suns effect greatest. Its ionization is not enough to bend the wave directions except for lower frequencies. It will only affect wave whose frequencies level are 500km. it has negative effect on propagation of sky wave, because it will absorb the energy from ...
Topic 10: Fields
... A spherical object creates a radial gravitational field around it (Tsokos 396). A point charge creates a radial electric field around it. Gravitational and electric fields are conservative fields. Conservative Field In a conservative field, the work done by the field on an object, as the object move ...
... A spherical object creates a radial gravitational field around it (Tsokos 396). A point charge creates a radial electric field around it. Gravitational and electric fields are conservative fields. Conservative Field In a conservative field, the work done by the field on an object, as the object move ...
What is a Black Hole?
... to Laplace in the 18th century. Almost immediately after Einstein developed general relativity, Karl Schwarzschild discovered a mathematical solution to the equations of the theory that described such an object. It was only much later, with the work of such people as Oppenheimer, Volkoff, and Snyder ...
... to Laplace in the 18th century. Almost immediately after Einstein developed general relativity, Karl Schwarzschild discovered a mathematical solution to the equations of the theory that described such an object. It was only much later, with the work of such people as Oppenheimer, Volkoff, and Snyder ...
Level Energy Forces Waves Electricity and magnetism Matter Space
... between force and extension sound waves in air are b) Calculate the total resistance the arrangements of the Define and categorise longitudinal waves, and how of combinations of resistors atoms or molecules quantities as scalars and the speed of each may be in series. vectors. measured; describe c) ...
... between force and extension sound waves in air are b) Calculate the total resistance the arrangements of the Define and categorise longitudinal waves, and how of combinations of resistors atoms or molecules quantities as scalars and the speed of each may be in series. vectors. measured; describe c) ...
Accreting neutron stars: strong gravity and type I bursts - UvA-DARE
... predictions. This approach has proved optimal for white dwarves and the extension to NSs is natural. The best sources for mass measurements are neutron stars in binary systems: Kepler’s third law or its relativistic equivalents allow us to measure, in some cases, the mass of the stars. If the NS is ...
... predictions. This approach has proved optimal for white dwarves and the extension to NSs is natural. The best sources for mass measurements are neutron stars in binary systems: Kepler’s third law or its relativistic equivalents allow us to measure, in some cases, the mass of the stars. If the NS is ...
Gravity - Galileo - University of Virginia
... Onward into Space: The Cannonball and the Moon It occurred to Newton one day (possibly because of a falling apple) that this familiar gravitational force we experience all the time here near the surface of the earth might extend outwards as far as the moon, and in fact might be the reason the moon i ...
... Onward into Space: The Cannonball and the Moon It occurred to Newton one day (possibly because of a falling apple) that this familiar gravitational force we experience all the time here near the surface of the earth might extend outwards as far as the moon, and in fact might be the reason the moon i ...
Fast spinning pulsars as probes of massive black
... numbers in small elliptical galaxies and globular clusters along with an estimated high probability of millisecond (ms)-pulsar formation in those environments have led many workers to propose the use of ms-pulsar timing to measure the mass and spin of intermediate-mass black holes. Models of pulsar ...
... numbers in small elliptical galaxies and globular clusters along with an estimated high probability of millisecond (ms)-pulsar formation in those environments have led many workers to propose the use of ms-pulsar timing to measure the mass and spin of intermediate-mass black holes. Models of pulsar ...
Mercury`s Precession Reconsidered
... curvature caused by the Sun. And when the numbers are cranked it is found that Mercury’s orbit precesses more than that predicted by newton’s model. And more importantly it was in better agreement with Mercury’s measured precession. 5. What did general relativity miss: General relativity missed or o ...
... curvature caused by the Sun. And when the numbers are cranked it is found that Mercury’s orbit precesses more than that predicted by newton’s model. And more importantly it was in better agreement with Mercury’s measured precession. 5. What did general relativity miss: General relativity missed or o ...
Neutron Density and Neutron Source Determination in Barium
... the 5101 Aregion with synthetic spectra calculated for different distributions of the magnesium isotopes. The strength of C2 was estimated by fitting the profile of the C2 line at 5086 A. The calculation with the magnesium isotopes in the ratio 24Mg : 25Mg : 26Mg = 60 : 25 : 15 clearly gives the bes ...
... the 5101 Aregion with synthetic spectra calculated for different distributions of the magnesium isotopes. The strength of C2 was estimated by fitting the profile of the C2 line at 5086 A. The calculation with the magnesium isotopes in the ratio 24Mg : 25Mg : 26Mg = 60 : 25 : 15 clearly gives the bes ...