Incorruptible
发表于 2025-3-25 03:30:11
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arrogant
发表于 2025-3-25 08:51:19
How are AGN Found?,lude that selection in the hard X-ray band via imaging and spectroscopy is the most complete and allows the best estimate of the number and evolution of active galaxies. However, all of the techniques have difficulties at low luminosities where emission due to stellar processes can have similar sizes and luminosities.
MOAT
发表于 2025-3-25 14:01:41
Theory of Disk Accretion onto Supermassive Black Holes,cy of cooling in determining the structure and observational appearance of the accretion flow. Ongoing investigations into the dynamics of the plunging region, the origin of variability in the accretion process, and the evolution of warped, twisted, or eccentric disks are summarized.
浅滩
发表于 2025-3-25 18:11:53
A Panchromatic View of AGN,be the spectral properties of obscured AGN. Finally, we discuss the main observational methods in the different wavelength bands for disentangling AGN and stellar emission and the ability of these methods to find new (mainly obscured) AGN, a significant fraction of which are probably still missing in current surveys.
Trabeculoplasty
发表于 2025-3-25 21:33:09
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朴素
发表于 2025-3-26 00:54:30
0067-0057 rm or another, sparked the interest of astronomers for over 60 years. The only known mechanism that can explain the staggering amounts of energy emitted by the innermost regions of these systems is gravitational energy release by matter falling towards a supermassive black hole --- a black hole whos
craving
发表于 2025-3-26 06:50:00
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信徒
发表于 2025-3-26 08:57:47
The Accretion History of Supermassive Black Holes, derive the accretion rate density with time and intergrate it to show that the total matches the locally determined supermassive black hole density, as long as the average energy release effciency is high (> 0.1).
exophthalmos
发表于 2025-3-26 16:43:14
Observational Evidence for Supermassive Black Holes,logical advances most notably the launch of the ., the commissioning of the Very Long Baseline Array, and improvements in near-infrared speckle imaging techniques—have not only given us incontrovertible proof of the existence of supermassive black holes, but have unveiled fundamental connections bet
Apoptosis
发表于 2025-3-26 17:56:35
How are AGN Found?, the different techniques for finding AGN and compare and contrast the advantages and difficulties of selection in different wavelength bands. We stress the strong selection effects in each wavelength band and the difficulty of defining complete samples. Of all the techniques presently used, we conc