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It is not clear that a starship powered by Hawking radiation can be made feasible within the laws of known physics. In the standard black hole thermodynamic model, the average energy of emitted quanta increases as size decreases, and extremely small black holes emit the majority of their energy in particles other than photons.
Known gravitational wave events come from the merger of two black holes (BH), two neutron stars (NS), or a black hole and a neutron star (BHNS). [9] [10] Some objects are in the mass gap between the largest predicted neutron star masses (Tolman–Oppenheimer–Volkoff limit) and the smallest known black holes.
Simulation of a star being disrupted by a supermassive black hole during a tidal disruption event. [1]A tidal disruption event (TDE) is a transient astronomical source produced when a star passes so close to a supermassive black hole (SMBH) that it is pulled apart by the black hole's tidal force.
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For instance, the astrophysical background from stellar mass binary black-hole mergers is expected to be a key source of the stochastic background for the current generation of ground based gravitational-wave detectors. LIGO and Virgo detectors have already detected individual gravitational-wave events from such black-hole mergers. However ...
In the case of both components being intermediate black holes between 600 and 10 4 solar masses, LISA will be able to detect events up to redshifts around 1. In the case of an intermediate mass black hole spiralling into a massive black hole (between 10 4 and 10 6 solar masses) events will be detectable up to at least z=3. Since little is known ...
The black hole mass in IRAS 01003-2238 is estimated to be 2.5 x 10 7 M ʘ. [8] IRAS 01003-2228 has a star formation rate of > 100 M ʘ yr −1. [8] There are also numerous massive young Wolf-Rayet stars in its nucleus. [9] [8] In addition, the galaxy displays a broad emission band with a rest wavelength of λ ≈ 4660 Á.
ULAS J1342+0928 is the third-most distant known quasar detected and contains the second-most distant and oldest known supermassive black hole, [1] [5] [6] [7] at a reported redshift of z = 7.54. The ULAS J1342+0928 quasar is located in the Boötes constellation . [ 3 ]