منابع مشابه
Spectroscopic Evidence for a Supermassive Black Hole in Ngc 4486b
The stellar kinematics of the low-luminosity elliptical galaxy NGC 4486B have been measured in seeing σ∗ = 0. 22 with the Canada-France-Hawaii Telescope (CFHT) and Subarcsecond Imaging Spectrograph. Lauer and collaborators have shown that NGC 4486B is similar to M31 in having a double nucleus. Here we show that it also resembles M31 in its kinematics. Like M31, NGC 4486B rotates fairly rapidly ...
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The S0 galaxy NGC 3245 contains a circumnuclear disk of ionized gas and dust with a radius of 1. 1 (or 110 pc), making it an ideal target for dynamical studies with the Hubble Space Telescope (HST ). We have obtained spectra of the nuclear disk with the Space Telescope Imaging Spectrograph, using an 0. 2-wide slit at five parallel positions. Measurements of the Hα and [N II] emission lines are ...
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We have used the Hubble Space Telescope to measure the motion in the sky and compute the galactocentric orbit of the black hole X-ray binary GRO J1655-40. The system moves with a runaway space velocity of 112± 18 km s in a highly eccentric (e = 0.34± 0.05) orbit. The black hole was formed in the disk at a distance greater than 3 kpc from the Galactic centre and must have been shot to such eccen...
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There are issues in organizations that require new theoretical formulation. Hence, metaphorical theorizing is used in the study of organizations to interpret them and understand their complexities. In this method, the organization is likened to an entity and one of the key features of that entity is generalized to the organization. It should be borne in mind that most organizational theories ar...
متن کاملBlack Hole thermodynamics without a black hole?
In the present paper we consider, using our earlier results, the process of quantum gravitational collapse and argue that there exists the final quantum state when the collapse stops. This state, which can be called the “no-memory state”, reminds the final “no-hair state” of the classical gravitational collapse. Translating the “no-memory state” into classical language we construct the classica...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2013
ISSN: 2041-8205,2041-8213
DOI: 10.1088/2041-8205/772/1/l5