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On October 1, 1982, the first commercial compact disc, Billy Joel's "52nd Street," was released in Japan.
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For example an accretion disc can form around a compact ob ject.
Nature of singularities in gravitational collapse
The effect of radiative momentum deposition on astrophysical outﬂows around compact ob jects were studied using early disc models by many workers (e.g.
Generation and Acceleration of Jets from Effective Boundary Layer around Black Hole
We consider the effect of disc irradiation by the X-ray emission from the compact ob ject.
The origin of the rebrightening in soft X-ray transient outbursts
Let α ⊂ T 1 \ T 0 and β ⊂ S be embedded arcs with ∂α = ∂ β . A compact embedded disc D ⊂ M in general position to S is a compressing disc for S with string α and base β , if ∂D = α ∪ β and D ∩ T 1 = α.
Almost normal Heegaard surfaces
Let S ⊂ M be a closed surface in general position to T 1 . A compact embedded disc D ⊂ M \ T 2 is essential for S , if ∂D ⊂ S is not null-homotopic in S \ T 2 and #(D ∩ S ) ≤ #(D ′ ∩ S ) for any compact embedded disc D ′ ⊂ M \ T 2 bounded by ∂D.
Almost normal Heegaard surfaces
By taking a parallel copy of a subdisc of ˜D, there is a compact embedded disc D ⊂ U ( ˜D) \ T 1 in general position to S such that the closure of ∂D \ S is an arc γ ⊂ B+ (S ) ∩ T 2 connecting two different normal arcs of S ∩ T 2 , and no other arc in (D ∩ T 2 ) \ γ connects two different normal arcs of S .
Almost normal Heegaard surfaces
Accretion discs are cosmic devices that allow matter to eﬃciently accrete over a compact source by removing its angular momentum via viscous stresses while transforming gravitational potential energy into head and, thereafter, radiation (Frank, King & Raine 1992).
HST/FOS Time-resolved spectral mapping of IP Pegasi at the end of an outburst
This γ -ray binary system is composed of a B0 main sequence star with a circumstellar disc, i.e. a Be star, located at a distance of ∼2 kpc. A compact ob ject of unknown nature (neutron star or black hole) is orbiting around it, in a highly eccentric (e = 0.72 ± 0.15) orbit.
First results of galactic observations with MAGIC
Let µ be a positive measure with no atoms and with support in a compact polar subset the unit disc D (see e.g. ; p.82, and ; chapter IV, Theorem 1) Let u be the subharmonic Green potential of µ.
Monge-Ampere measures on pluripolar sets
It remains to use the following generalization of Landau’s theorem: if a holomorphic curve in a disc omits 2n + 1 hypersurfaces from an admissible system then its spherical derivative is bounded on every compact in this disc by a constant, depending only on the hypersurfaces and the compact [11, 12].
Normal holomorphic curves from parabolic regions to projective spaces
We can use this general theory to bound |Gn (z , s)| in the following way: For every z in the compact set K we ﬁx a small open (Euclidean) disc Ωz centered at z with some radius such that its closure Ωz is contained in H.
Distribution of Angles in Hyperbolic Lattices
This theory satisfactory predicts the general properties of the discs around compact ob jects.
Accretion and plasma outflow from dissipationless discs
The boundedness and compactness of weighted composition operators on the Hardy space H2 of the unit disc is analysed.
Boundedness, compactness and Schatten-class membership of weighted composition operators
Let S be any piecewise smooth compact surface bounded by C and which is contained in the cylinder over the disc bounded by C .
Axially symmetric volume constrained anisotropic mean curvature flow
In general discs around compact objects are hot and fully ionized in their inner parts but if large enough they will reach temperatures at which hydrogen (or another dominant element) starts recombining.
Disc outbursts in various types of binary systems
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