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... the compact object the accretion disk is transformed into a hot optically thin and geometrically thick flow with the aspect ratio of H/R∼0.5–1. The soft (optically thick) and hard (optically thin) spectral components are formed in the accretion disk and the hot inner flow correspondingly. The value ...
... the compact object the accretion disk is transformed into a hot optically thin and geometrically thick flow with the aspect ratio of H/R∼0.5–1. The soft (optically thick) and hard (optically thin) spectral components are formed in the accretion disk and the hot inner flow correspondingly. The value ...
A massive hypergiant star as the progenitor of the supernova SN
... point source detected in 1997 was a compact cluster of many stars, with a combined luminosity of the order of 106 solar luminosities (106L[). Second, the spatial coincidence of the putative single star with SN 2005gl alone did not provide conclusive evidence that the supernova explosion was actually ...
... point source detected in 1997 was a compact cluster of many stars, with a combined luminosity of the order of 106 solar luminosities (106L[). Second, the spatial coincidence of the putative single star with SN 2005gl alone did not provide conclusive evidence that the supernova explosion was actually ...
The peculiar dipping events in the disc-bearing young
... As no other sources were present within the 12 × 11 pixel images, we create the light curve by manually defining a large target mask as well as a background mask. A large target mask is required due to occasional small-scale jittering of the spacecraft, resulting in the target moving slightly from i ...
... As no other sources were present within the 12 × 11 pixel images, we create the light curve by manually defining a large target mask as well as a background mask. A large target mask is required due to occasional small-scale jittering of the spacecraft, resulting in the target moving slightly from i ...
THE SOFT STATE OF CYGNUS X-1 OBSERVED WITH
... et al. 2009) and Swift BAT (Barthelmy et al. 2005). Although multiple OBSIDs are listed for some epochs, these are actually continuous observations. The science exposures from epoch 3 (OBSIDs 30001011002 and 30001011003) have already been presented in Tomsick et al. (2014). However, immediately afte ...
... et al. 2009) and Swift BAT (Barthelmy et al. 2005). Although multiple OBSIDs are listed for some epochs, these are actually continuous observations. The science exposures from epoch 3 (OBSIDs 30001011002 and 30001011003) have already been presented in Tomsick et al. (2014). However, immediately afte ...
Rotating White Dwarfs and Neutron Stars in - Padis
... configurations. We found the minimum rotation periods ∼ 0.3, 0.5, 0.7 and 2.2 seconds and maximum masses ∼ 1.500, 1.474, 1.467, 1.202 M⊙ for 4 He, 12 C, 16 O, and 56 Fe WDs respectively. By using the turning-point method we found that RWDs can indeed be axisymmetrically unstable and we give the rang ...
... configurations. We found the minimum rotation periods ∼ 0.3, 0.5, 0.7 and 2.2 seconds and maximum masses ∼ 1.500, 1.474, 1.467, 1.202 M⊙ for 4 He, 12 C, 16 O, and 56 Fe WDs respectively. By using the turning-point method we found that RWDs can indeed be axisymmetrically unstable and we give the rang ...
Black Spot.
... and Pierre Simon de Laplace (1796) independently came up with the idea of an object which such a high density, that even light couldn’t escape from it, it is rather conventional to start with general relativity, formulated in 1915 by Einstein, before talking about black holes. These black holes in G ...
... and Pierre Simon de Laplace (1796) independently came up with the idea of an object which such a high density, that even light couldn’t escape from it, it is rather conventional to start with general relativity, formulated in 1915 by Einstein, before talking about black holes. These black holes in G ...
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... within the white region of Figure 2. The first of two sets of results from the binary evolution calculation for this model is shown in Figure 3. The four panels show (a) the evolution of Porb , (b) the progenitor masses of Regulus (long-dashed curve) and the white dwarf progenitor (solid curve), (c) ...
... within the white region of Figure 2. The first of two sets of results from the binary evolution calculation for this model is shown in Figure 3. The four panels show (a) the evolution of Porb , (b) the progenitor masses of Regulus (long-dashed curve) and the white dwarf progenitor (solid curve), (c) ...
Partition effects in transverse electron-beam waves
... in the amplifier electrode system may occur, which can have a deleterious effect upon the noise figure of the tube. The propagation of signals along a beam with a fini te non-zero diameter can be described by means of the "disc" model of Gordon 4 ). According to this model the beam may be thought of ...
... in the amplifier electrode system may occur, which can have a deleterious effect upon the noise figure of the tube. The propagation of signals along a beam with a fini te non-zero diameter can be described by means of the "disc" model of Gordon 4 ). According to this model the beam may be thought of ...
Chapter 14 Cosmology II
... proper speed of light . This is similar to the covariance of the laws of physics in different gravitational potentials as discussed in chapter 3. However, with the universe Гu increases with time but the laws of physics remain unchanged. One observable effect is that it takes l ...
... proper speed of light . This is similar to the covariance of the laws of physics in different gravitational potentials as discussed in chapter 3. However, with the universe Гu increases with time but the laws of physics remain unchanged. One observable effect is that it takes l ...
The nature of the ultraluminous X-ray sources inside galaxies and
... It is generally agreed that there are two types of compact X-ray sources whose properties are well established. The first objects of this kind are the X-ray sources that arise in stellar binary systems. These are clearly associated with accretion disks around highly evolved stars, neutron stars and ...
... It is generally agreed that there are two types of compact X-ray sources whose properties are well established. The first objects of this kind are the X-ray sources that arise in stellar binary systems. These are clearly associated with accretion disks around highly evolved stars, neutron stars and ...
Multiplicity in Early Stellar Evolution
... star systems formed during the collapse of a highly unstable cloud with an initial mass of 500 M⊙ , a Jeans mass of 1 M⊙ , and a turbulent, high Mach number (13.7) velocity field. This simulation involved a sufficiently large population of stars and brown dwarfs (1250) so as to provide an excellent ...
... star systems formed during the collapse of a highly unstable cloud with an initial mass of 500 M⊙ , a Jeans mass of 1 M⊙ , and a turbulent, high Mach number (13.7) velocity field. This simulation involved a sufficiently large population of stars and brown dwarfs (1250) so as to provide an excellent ...
The role of tidal interactions in star formation
... force that ultimately transfers the excess angular momentum from the gas around each forming star to the orbital motions of the companions in a binary or multiple system. The tidal torques exerted by the companions on the gas orbiting around each forming star must then play a fundamental role in the ...
... force that ultimately transfers the excess angular momentum from the gas around each forming star to the orbital motions of the companions in a binary or multiple system. The tidal torques exerted by the companions on the gas orbiting around each forming star must then play a fundamental role in the ...
ATLASGAL -- The APEX telescope large area survey of the galaxy at
... opacity correction, as determined from skydips observed typically every two hours (see Siringo et al. 2009, for more details). In addition, the flux calibration is regularly (every hour) checked against primary calibrators (the planets Mars, Neptune and Uranus) or secondary calibrators (bright Galac ...
... opacity correction, as determined from skydips observed typically every two hours (see Siringo et al. 2009, for more details). In addition, the flux calibration is regularly (every hour) checked against primary calibrators (the planets Mars, Neptune and Uranus) or secondary calibrators (bright Galac ...
Conceptual Physics
... The metric system Every country in the world besides the U.S. has adopted a system of units known colloquially as the “metric system.” Even in the U.S., the system is used universally by scientists, and also by many engineers. This system is entirely decimal, thanks to the same eminently logical peo ...
... The metric system Every country in the world besides the U.S. has adopted a system of units known colloquially as the “metric system.” Even in the U.S., the system is used universally by scientists, and also by many engineers. This system is entirely decimal, thanks to the same eminently logical peo ...