منابع مشابه
Black holes in the milky way galaxy.
Extremely strong observational evidence has recently been found for the presence of black holes orbiting a few relatively normal stars in our Milky Way Galaxy and also at the centers of some galaxies. The former generally have masses of 4-16 times the mass of the sun, whereas the latter are "supermassive black holes" with millions to billions of solar masses. The evidence for a supermassive bla...
متن کاملX-Rays from Isolated Black Holes in the Milky Way
Galactic stellar-population-synthesis models, chemical-enrichment models, and longduration Bulge microlensing events indicate about Ntot = 10 − 10 stellar-mass black holes reside in our Galaxy. We study X-ray emission from accretion from the interstellar medium on to isolated black holes. Although isolated black holes may be fewer in number than neutron stars, NNS ∼ 10, their higher masses, 〈M〉...
متن کاملAnother way to break down
hen yeast secretory proteins are improperly folded, the ER quality control system directs them into the HRD/DER pathway, which targets the proteins for degradation. Blocking the HRD/DER pathway, however, does not completely stop degradation, implying that there must be an alternative way to destroy misfolded secretory proteins. Haynes et al., reporting on page 91, have now characterized that pa...
متن کاملDirty Black Holes and Hairy Black Holes.
An approach based on considerations of the non-classical energy momentum tensor outside the event horizon of a black hole provides additional physical insight into the nature of discrete quantum hair on black holes and its effect on black hole temperature. Our analysis both extends previous work based on the Euclidean action techniques, and corrects an omission in that work. We also raise sever...
متن کاملDumb holes: analogues for black holes.
The use of sonic analogues to black and white holes, called dumb or deaf holes, to understand the particle production by black holes is reviewed. The results suggest that the black hole particle production is a low-frequency and low-wavenumber process.
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ژورنال
عنوان ژورنال: Physics
سال: 2023
ISSN: ['2624-8174']
DOI: https://doi.org/10.1103/physics.16.s77