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Jets from Compact Objects [PDF]
Symposium - International Astronomical Union, 2000 Some topics in the theory of jets are reviewed. These include jet precession, unconfined jets, the origin of knots, the internal shock model as a unifying theme from protostellar jets to gamma-ray bursts, relations between the Blandford-Znajek and MHD disk-wind models, and jet collimation in magnetic acceleration models.
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LOCALLY COMPACT OBJECTS IN EXACT CATEGORIES [PDF]
International Journal of Mathematics, 2011 We identify two categories of locally compact objects on an exact category [Formula: see text]. They correspond to the well-known constructions of the Beilinson category [Formula: see text] and the Kato category [Formula: see text]. We study their mutual relations and compare the two constructions.
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Conformal motion for higher-dimensional compact objects
European Physical Journal C: Particles and Fields, 2023 In this work, we present a new framework for five-dimensional spherical symmetry anisotropic stars that admits conformal motion. The behaviour of model characteristic pressure, stress, density profile and surface tension is investigated with the ...
A. Zahra +2 more
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Ultra-relativistic journeys through compact astrophysical objects
Physics Letters BIt has recently been proved that, for constant density stars, there is a critical value Λ*=1 for the dimensionless density parameter Λ ≡ 4πR2ρmax of the star above which the asymptotically measured travel time Ts along a semi-circular trajectory that ...
Shahar Hod
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COMPACT PARTITIONS ON LARGE DIMENSION TOPOLOGICAL GRAPHS
Известия Томского политехнического университета: Промышленная кибернетика, 2023 Relevance. Distributed systems containing hundreds and thousands of objects are usually built in the form of hierarchical structures. In these structures, lower-level objects are combined into subsets for connection to the corresponding centers.
Alexander V. Pogrebnoy +1 more
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On categorical notions of compact objects
Applied Categorical Structures, 1996 The concept of compactness has found various categorical generalizations. In this paper the author studies two such -- seemingly unrelated -- concepts: Borel-Lebesgue-compactness, based on the concept of a closure operator, an Áhn-Wiegandt-compactness, based on the bahaviour of certain morphisms with respect to projective limits.
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Inspiraling compact objects with generic deformations
Physical Review D, 2022 Self-gravitating bodies can have an arbitrarily complex shape, which implies a much richer multipolar structure than that of a black hole in General Relativity. With this motivation, we study the corrections to the dynamics of a binary system due to generic, nonaxisymmetric mass quadrupole moments to leading post-Newtonian (PN) order.
Loutrel, Nicholas +3 more
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Onset of superradiant instabilities in rotating spacetimes of exotic compact objects
Journal of High Energy Physics, 2017 Exotic compact objects, horizonless spacetimes with reflective properties, have intriguingly been suggested by some quantum-gravity models as alternatives to classical black-hole spacetimes.
Shahar Hod
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Wolf–Rayet–compact object binaries as progenitors of binary compact objects
Astronomy & AstrophysicsBinaries with a Wolf–Rayet star and a compact object (WR–COs), either a black hole (BH) or a neutron star (NS), have been proposed as possible progenitors for the binary compact object mergers (BCOs) observed with gravitational wave (GW) detectors. In this work, we use the open source population synthesis code SEVN to investigate the role of WR–COs as ...
Korb E. +4 more
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Compact Massive Object in Galaxies
, 2016 arXiv admin note: substantial text overlap with arXiv:1603 ...
Tosta e Melo, Capuzzo Dolcetta
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