Category: Uncategorized

“THE INNER STRUCTURES of quasars (the accretion disk, the BLR, and the dust torus) are all within the sphere of influence of the SMBH, where the most important processes associated with accretion are occurring (e.g., winds and outflows, photoionization, chemical enrichment, dynamical evolution, etc.).” ( SMBH = supermassive black hole; BLR = broad emission line region). https://lnkd.in/dEvc7DF View in LinkedIn

GALACTIC REACH OF SIGNATURES. “The inner regions of quasars emit most of the luminosity of these accreting BHs, and produce copious diagnostic features in the observed rest-frame UV-infrared spectrum. The basic structure of quasars consists of an accretion disk surrounding the BH that produces the intense ionizing radiation needed to power the broad emission line region (BLR), the dust torus, and the narrow emission line region (NLR), which extends to galactic scales.” ( BH = black hole). https://lnkd.in/dEvc7DF View in LinkedIn

“QUASARS (luminous Active Galactic Nuclei, or AGN) are among the most luminous extragalactic objects in the Universe. Powered by rapid mass accretion onto the supermassive black holes (SMBHs) at the center of distant galaxies, quasars are beacons marking growing massive black holes (BH) and their host galaxies to the farthest reach of modern telescopes (e.g., a recently discovered quasar at z ∼ 7.5.” https://lnkd.in/dEvc7DF View in LinkedIn

POWER SOURCE. “Quasars discovered at z > 6 − 7 are powered by SMBHs up to 10(10)M⊙.” (M⊙ = unit of sun’s mass; SMBH = supermassive black holes). https://lnkd.in/devi4ZN View in LinkedIn

Any guesses? Clue: not related to Jackson Pollock. View in LinkedIn

PERIODICITY OF PARADIGM CHANGES. “Scientific Revolutions (Paradigm Shifts) Happen About Every 80 Years. The development of science is not “incremental,” as Kuhn called it, but revolutionary. Periodically, there are revolutionary changes in physics where one “paradigm” is replaced by another.” https://lnkd.in/dr6GNXa View in LinkedIn

GIANT COSMIC LAB. “On White Holes as Particle Accelerator. We analyze scenarios of particle collisions in the metric of a nonextremal black hole that can potentially lead to an ultrahigh energy Ec.m. in their center-of-mass frame.” https://lnkd.in/d6_hYsy View in LinkedIn

NO VIOLATION. “We address the objections to the existence of white-hole remnants, discuss their stability, and show how the notions of entropy relevant in this context allow them to evade several no-go arguments. A black hole's formation, evaporation, tunneling to a white hole, and final slow decay, form a unitary process that does not violate any known physics.” https://lnkd.in/dqZGa_3 View in LinkedIn

QUANTUM TUNNELS. “We point out that (i) established physics includes objects with precisely the required properties for remnants: white holes with small masses but large finite interiors; (ii) non-perturbative quantum gravity indicates that a black hole tunnels precisely into such a white hole, at the end of its evaporation.” https://lnkd.in/dqZGa_3 View in LinkedIn