Accretion Power in Astrophysics, Third Editiion

... treatment is necessarily somewhat heterogeneous. For example, there is by now a tolerably coherent line of argument showing that the formation of an accretion disc is very likely in many close binaries, and giving a plausible picture of what such a disc is like, at least in some simple cases. In oth ...

... treatment is necessarily somewhat heterogeneous. For example, there is by now a tolerably coherent line of argument showing that the formation of an accretion disc is very likely in many close binaries, and giving a plausible picture of what such a disc is like, at least in some simple cases. In oth ...

Abstract Title of Dissertation: BLACK HOLE DYNAMICS AND GRAVITATIONAL RADIATION IN GALACTIC NUCLEI

... that host supermassive black holes. Mergers between stellar-mass black holes will be key sources of gravitational radiation for ground-based detectors. However, the rates of these events are highly uncertain, because we can not observe these binaries electromagnetically. In this work, we show that t ...

... that host supermassive black holes. Mergers between stellar-mass black holes will be key sources of gravitational radiation for ground-based detectors. However, the rates of these events are highly uncertain, because we can not observe these binaries electromagnetically. In this work, we show that t ...

POLYTROPES - Princeton

... possible to show that all polytropes with n > 5 have infinite radii. This means that only solutions with n < 5 have a surface. The two cases most interesting for real stars have n = 1.5 and n = 3, and unfortunately these do not have analytic solutions. A solution of eq. (poly.6) depends on one param ...

... possible to show that all polytropes with n > 5 have infinite radii. This means that only solutions with n < 5 have a surface. The two cases most interesting for real stars have n = 1.5 and n = 3, and unfortunately these do not have analytic solutions. A solution of eq. (poly.6) depends on one param ...

5. Solving Linear Congruences

... 7 and 7|14, so it has solutions (and from above, we know that it has exactly 7 solution modulo 84. We now follow the above steps to find them. Step 1: Find a single solution x0 the linear congruence 35x ≡ 14 (mod 84) by converting it to the linear Diophantine equation 35x + 84k = 14, which is equiva ...

... 7 and 7|14, so it has solutions (and from above, we know that it has exactly 7 solution modulo 84. We now follow the above steps to find them. Step 1: Find a single solution x0 the linear congruence 35x ≡ 14 (mod 84) by converting it to the linear Diophantine equation 35x + 84k = 14, which is equiva ...

An Improved Distance and Mass Estimate for Sgr A* from a Multistar

... the much deeper adaptive optics images and the vast improvement that has been made in the knowledge of the central black hole’s properties. We use constraints on a star’s orbit from the deep adaptive optics data to inform the search for the star in the earlier speckle years. As a pilot study for thi ...

... the much deeper adaptive optics images and the vast improvement that has been made in the knowledge of the central black hole’s properties. We use constraints on a star’s orbit from the deep adaptive optics data to inform the search for the star in the earlier speckle years. As a pilot study for thi ...

Scaling behavior in Rayleigh-Bénard convection

... The buoyancy forcing is characterized by the Rayleigh number, Ra. The period of rotation is characterized by the Ekman number, E. The Prandtl number, P r, characterizes the fluid itself as a ratio of viscous to thermal diffusivities. Rotating convection is generally found to occur in one of two basi ...

... The buoyancy forcing is characterized by the Rayleigh number, Ra. The period of rotation is characterized by the Ekman number, E. The Prandtl number, P r, characterizes the fluid itself as a ratio of viscous to thermal diffusivities. Rotating convection is generally found to occur in one of two basi ...

引力产生于碰撞——兼论万有引力场的演变及宇宙的起源

... Paper explanation: the contents studied by the paper-“The Gravity Generates from the Collision—Exploring the Evolution of Gravity Field and The Origin of the Universe” include: the structure of fundamental particles, combination method of nucleus; matter foundation and functional principle of gravit ...

... Paper explanation: the contents studied by the paper-“The Gravity Generates from the Collision—Exploring the Evolution of Gravity Field and The Origin of the Universe” include: the structure of fundamental particles, combination method of nucleus; matter foundation and functional principle of gravit ...

NanoScalePlanetWalk-NSTA-2010

... to scale up and down sizes and distances. •It starts to acquaint the public with a “feel” for the NanoScale and how small “nano” really is by shrinking known “Big” stuff… •…and how “big” the Solar System really is. •Gives the sizes and distances of Solar System objects in a scale 1 mm = 1,000 km! •B ...

... to scale up and down sizes and distances. •It starts to acquaint the public with a “feel” for the NanoScale and how small “nano” really is by shrinking known “Big” stuff… •…and how “big” the Solar System really is. •Gives the sizes and distances of Solar System objects in a scale 1 mm = 1,000 km! •B ...

Spectral Methods for Numerical Relativity

... Einstein’s equations represent a complicated set of nonlinear partial differential equations for which some exact [30] or approximate [31] analytical solutions are known. But these solutions are not always suitable for physically or astrophysically interesting systems, which require an accurate desc ...

... Einstein’s equations represent a complicated set of nonlinear partial differential equations for which some exact [30] or approximate [31] analytical solutions are known. But these solutions are not always suitable for physically or astrophysically interesting systems, which require an accurate desc ...

Neutron Stars in Compact Binary Systems: From the equation of

... parameters. Astronomical observations are then used to systematically constrain parameter values, instead of ruling out models on a case-by-case basis. ...

... parameters. Astronomical observations are then used to systematically constrain parameter values, instead of ruling out models on a case-by-case basis. ...

Rapid Rotation of Low-Mass Red Giants Using APOKASC: A

... in velocity than intermediate-mass stars to cross any single velocity threshold. Additionally, using a single threshold value fails to identify stars rotating at moderate but measurable rates that in some mass regimes are likely to result from interactions. In order to identify a larger fraction of ...

... in velocity than intermediate-mass stars to cross any single velocity threshold. Additionally, using a single threshold value fails to identify stars rotating at moderate but measurable rates that in some mass regimes are likely to result from interactions. In order to identify a larger fraction of ...

Equations of state and structure of neutron stars

... First theoretical idea of neutron stars comes from Baade and Zwicky [13], being based on the analysis of supernova explosions. They stated that supernova explosion could be transition a from star to a neutron star. They also predicted that neutron stars consist of closely packed neutrons in the obje ...

... First theoretical idea of neutron stars comes from Baade and Zwicky [13], being based on the analysis of supernova explosions. They stated that supernova explosion could be transition a from star to a neutron star. They also predicted that neutron stars consist of closely packed neutrons in the obje ...

OGLE-2015-BLG-1482L: The First Isolated Low

... We analyze the single microlensing event OGLE-2015-BLG-1482 simultaneously observed from two ground-based surveys and from Spitzer. The Spitzer data exhibit ﬁnite-source effects that aredue to the passage of the lens close to or directly overthe surface of the source star as seen from Spitzer. Suc ...

... We analyze the single microlensing event OGLE-2015-BLG-1482 simultaneously observed from two ground-based surveys and from Spitzer. The Spitzer data exhibit ﬁnite-source effects that aredue to the passage of the lens close to or directly overthe surface of the source star as seen from Spitzer. Suc ...

Properties of rapidly rotating PNS with antikaon condensates at

... as a millisecond, or a frequency that is greater than 500 Hz. The fastest known pulsar, PSR J1748-2446ad, that has been observed to date was discovered [13] in 2004. It has a rotation period of 1.397 ms and frequency of 716 Hz. PNS may rotate with higher frequency than this or the NS may gain rotati ...

... as a millisecond, or a frequency that is greater than 500 Hz. The fastest known pulsar, PSR J1748-2446ad, that has been observed to date was discovered [13] in 2004. It has a rotation period of 1.397 ms and frequency of 716 Hz. PNS may rotate with higher frequency than this or the NS may gain rotati ...

Binary evolution using the theory of osculating orbits

... Context. Studies of conservative mass transfer in interacting binary systems widely assume that orbital angular momentum is conserved. However, this only holds under physically unrealistic assumptions. Aims. Our aim is to calculate the evolution of Algol binaries within the framework of the osculati ...

... Context. Studies of conservative mass transfer in interacting binary systems widely assume that orbital angular momentum is conserved. However, this only holds under physically unrealistic assumptions. Aims. Our aim is to calculate the evolution of Algol binaries within the framework of the osculati ...

The low-spin black hole in LMC X-3 Please share

... Leong et al. (1971) discovered LMC X-3 during the first year of the Uhuru mission. In 1983, Cowley et al. (1983) showed via dynamical observations that the compact X-ray source in this 1.7 day binary is a black hole (BH). In Orosz et al. (2014) we use new optical data to derive a much improved dynam ...

... Leong et al. (1971) discovered LMC X-3 during the first year of the Uhuru mission. In 1983, Cowley et al. (1983) showed via dynamical observations that the compact X-ray source in this 1.7 day binary is a black hole (BH). In Orosz et al. (2014) we use new optical data to derive a much improved dynam ...

Tidal interaction of a rotating 1 vec {M_sun} star with a - UvA-DARE

... the unperturbed radiative energy flux, and where the other constants have their usual meaning. The factor η is a characteristic radiative diffusion length. Note that the radiative diffusion introduces a factor i, so that the tidal perturbations are complex-valued which expresses the induced phase-la ...

... the unperturbed radiative energy flux, and where the other constants have their usual meaning. The factor η is a characteristic radiative diffusion length. Note that the radiative diffusion introduces a factor i, so that the tidal perturbations are complex-valued which expresses the induced phase-la ...