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A Study on Active Galactic Nucleus Variability
2022Active Galactic Nuclei (AGNs) are accreting supermassive black holes at the center of galaxies, known for rich spectral features and multi-time scale variability in their electromagnetic emission. The origin of the variability in AGN light curves can be either intrinsic, meaning related processes that take place inside the AGN system, or extrinsic, i.e.
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ACTIVE GALACTIC NUCLEUS FEEDBACK IN GIANTS AND DWARFS
2022Feedback from Active Galactic Nucleus (AGN) may play a critical role in the coevolution of galaxies and supermassive black holes (SMBH). Specifically, AGN feedback may quench star formation, suppress baryon-to-dark matter mass ratio, shape galaxy morphology, impact the circumgalactic (CGM)/intergalactic medium (IGM), and regulate SMBH accretion. One of
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IC4553: Masers Around an Active Galactic Nucleus
Publications of the Astronomical Society of Australia, 1984AbstractThe galaxy IC4553 (Arp 220) is a peculiar galaxy having a redshift of 0.02. It has been variously described as consisting of a symbiotic pair of galaxies, as having a highly peculiar pair of nuclei, or as consisting of a nucleus bisected by a dust lane. In addition, it exhibits OH maser emission which is both the most intrinsically luminous (by
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A galactic model with a pulsating active nucleus. I
Astrophysics and Space Science, 1973The chemical evolution of the Galaxy with a pulsating active nucleus is investigated. The surface densities of gas, stellar remnants, stars and chemical species such as helium and heavy elements inZ≧6 are calculated as functions of the position in the Galaxy and of the evolutional time of the Galaxy.
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A galactic model with a pulsating active nucleus
Astrophysics and Space Science, 1974openaire +2 more sources
Influence of Comptonization region over the ambiance of accretion disc in active galactic nucleus
Monthly Notices of the Royal Astronomical Society, 2022K Sriram, Sriram K
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Atomic gas fractions in active galactic nucleus host galaxies
Monthly Notices of the Royal Astronomical Society, 2019Sara L Ellison +2 more
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