Observational Appearance of Black Holes in X-Ray Binaries and AGN

Gilfanov, M.; Merloni, A.

doi:10.1007/978-1-4939-2227-7_8

Cited by 6 publications

(11 citation statements)

References 101 publications

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“…Over the past 15 yr, a number of other relevant in-depth reviews have been prepared that have some overlap with the topics discussed here. These include Hasinger and Zamorani (2000), Gilli (2004), Brandt and Hasinger (2005), Urry and Treister (2007), Hickox (2009), Brandt and Alexander (2010), , , Kormendy and Ho (2013), Merloni and Heinz (2013), Shankar (2013), and Gilfanov and Merloni (2014). We encourage interested readers to consult these reviews as well, noting that they generally emphasize somewhat different topics than those emphasized here.…”

Section: Structure Of This Review Other Relevant Reviews and Definimentioning

confidence: 92%

“…These physical processes span scales from the immediate vicinity of the SMBH (light minutes to light hours) to that of the obscuring material (light days to light years). Such survey-based physical investigations critically complement the in-depth targeted X-ray studies of individual and small samples of AGNs that are another major thrust of X-ray astronomy (e.g., Mushotzky et al 1993;Reynolds and Nowak 2003;Fabian 2006;Turner and Miller 2009;Done 2010;Gilfanov and Merloni 2014). In this section, we will briefly review results on AGN physics coming from three key areas of survey-based investigation: the basic properties, luminosity dependence, and redshift dependence of AGN X-ray obscuration (Section 4.1), X-ray-to-optical/UV SEDs (Section 4.2), and the X-ray continuum shape and its connection to Eddington ratio (Section 4.3).…”

Section: Agn Physicsmentioning

confidence: 96%

“…The X-ray continuum arises via Compton upscattering in an accretion-disk "corona" over a broad X-ray band, and also perhaps via accretion-disk emission at low X-ray energies (e.g., Mushotzky et al 1993;Reynolds and Nowak 2003;Fabian 2006;Turner and Miller 2009;Done 2010;Gilfanov and Merloni 2014). AGNs hosting powerful jets furthermore often show strong jet-linked X-ray continuum emission (e.g., Worrall 2009;Miller et al 2011).…”

Section: General Utility Of X-ray Surveys For Studies Of Active Galacmentioning

confidence: 99%

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Cosmic X-ray surveys of distant active galaxies

Brandt

Alexander

2015

Astron Astrophys Rev

306

227

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We review results from cosmic X-ray surveys of active galactic nuclei (AGNs) over the past ≈ 15 yr that have dramatically improved our understanding of growing supermassive black holes in the distant universe. First, we discuss the utility of such surveys for AGN investigations and the capabilities of the missions making these surveys, emphasizing Chandra, XMM-Newton, and NuSTAR. Second, we briefly describe the main cosmic X-ray surveys, the essential roles of complementary multiwavelength data, and how AGNs are selected from these surveys. We then review key results from these surveys on the AGN population and its evolution ("demographics"), the physical processes operating in AGNs ("physics"), and the interactions between AGNs and their environments ("ecology"). We conclude by describing some significant unresolved questions and prospects for advancing the field.

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Section: Structure Of This Review Other Relevant Reviews and Definimentioning

confidence: 92%

Section: Agn Physicsmentioning

confidence: 96%

Section: General Utility Of X-ray Surveys For Studies Of Active Galacmentioning

confidence: 99%

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Cosmic X-ray surveys of distant active galaxies

Brandt

Alexander

2015

Astron Astrophys Rev

306

227

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“…(Gilfanov et al 2015) [15]. Just as there are two major types of black holes, stellar-mass and supermassive, and two types of singularities, gravitational and ring singularities, it is our suggestion for two different categories of accretion disks.…”

Section: Accretions Disk and Supermassive Black Hole Creationmentioning

confidence: 80%

The Final Size of the Universe Based on the Elasticity of the Fabric of Spacetime

Douglas¹,

Bajaj²

2020

JHEPGC

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We investigate the fabric of spacetime, its ability to stretch, curve, and expand. Through our continuous studies of accretion disks located at the core of galaxies, it is our conclusion that these disks are separate from the host galaxy stellar disk. Our research has also determined that the radius of accretion disks in spiral galaxies follow a consistent ratio according to the circumference of their adjacent supermassive black hole based on its Schwarzchild radius. We present evidence suggesting that galactic accretion disks are a key element to understand galaxy formation and can provide a precise calculation to how much the fabric of space will stretch. Once the degree of the elasticity of spacetime was established, we applied these measurements to the size of the universe at 380,000 years of age based on the imagery of the cosmic microwave background. This calculation provided us with the maximum diameter the universe will reach, an exact time when the universe will stop expanding, and where we are today within that timeline.

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“…This "blue bump emission" is difficult to observe owing to the presence of a large number of emission lines contaminating the signal and will not be discussed further in this thesis (see e.g. Gilfanov and Merloni (2014)). The thermal emission from accretion disks surrounding BHBs is modeled using the NT prescription described in Section 1.3.1.…”

Section: General Relativistic Magnetohydrodynamic Simulationsmentioning

confidence: 99%

Using Simulations of Black Holes to Study General Relativity and the Properties of Inner Accretion Flow

Hoormann

2016

Preprint

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I could not have arrived at this point without the help and support from a vast number of people. First, I need to thank Henric Krawczynski who, through advising me these past several years, has taught me how to be a physicist. Under his direction I not only learned about black holes, general relativity, and how to study them, but also how to share my work with others through both writing papers and developing presentations. I am also grateful for guidance from Fabian Kislat, Paul Dowkontt, Anna Zajczyk, and Matthias Beilicke and in particular for their help and patience in teaching me how to do experimental work. I also couldn't have asked for better colleagues/office-mates/friends than my fellow grad students, Banafsheh Behestipour and Rashied Amini. It would be remiss of me to not thank those I have shared an office/floor with, including

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Observational Appearance of Black Holes in X-Ray Binaries and AGN

Cited by 6 publications

References 101 publications

Cosmic X-ray surveys of distant active galaxies

Cosmic X-ray surveys of distant active galaxies

The Final Size of the Universe Based on the Elasticity of the Fabric of Spacetime

Using Simulations of Black Holes to Study General Relativity and the Properties of Inner Accretion Flow

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