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The Bright Side of Black Holes: Radi...

Zhu, Yucong,

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The Bright Side of Black Holes: Radiation from Black Hole Accretion Disks /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The Bright Side of Black Holes: Radiation from Black Hole Accretion Disks // Yucong Zhu.
作者:	Zhu, Yucong,
面頁冊數:	1 electronic resource (314 pages)
附註:	Source: Dissertations Abstracts International, Volume: 77-06, Section: B.
Contained By:	Dissertations Abstracts International77-06B.
標題:	Astronomy. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3739150
ISBN:	9781339296883

The Bright Side of Black Holes: Radiation from Black Hole Accretion Disks /
Zhu, Yucong,

The Bright Side of Black Holes: Radiation from Black Hole Accretion Disks /Yucong Zhu. - 1 electronic resource (314 pages)

Source: Dissertations Abstracts International, Volume: 77-06, Section: B.

An understanding of radiation is paramount for connecting observations of accretion disks with the theory of black holes. In this thesis, we explore via radiative transfer postprocessing calculations the observational signatures of black holes. We investigate disk spectra by analyzing general relativistic magnetohydrodynamic (GRMHD) simulations of accretion disks. For the most part there are no surprises - the resulting GRMHD spectrum is very close to the analytic Novikov & Thorne (1973) prediction from decades past, except for a small modification in the case of spinning black holes, which exhibit a high-energy power-law tail that is sourced by hot Comptonized gas from within the plunging region of the accretion flow. These conclusions are borne out by both 1D and 3D radiative transfer calculations of the disk. Significant effort was spent in developing from scratch the 3D radiative code that we used for the analysis. The code is named HERO (Hybrid Evaluator for Radiative Objects) and it is a new general purpose grid-based 3D general relativistic radiative solver.

English

ISBN: 9781339296883Subjects--Topical Terms:

517668
Astronomy.
Subjects--Index Terms:

Black holes

The Bright Side of Black Holes: Radiation from Black Hole Accretion Disks /
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300 $a 1 electronic resource (314 pages)
336 $a text $b txt $2 rdacontent
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500 $a Source: Dissertations Abstracts International, Volume: 77-06, Section: B.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisors: Narayan, Ramesh.
502 $b Ph.D. $c Harvard University $d 2015.
520 $a An understanding of radiation is paramount for connecting observations of accretion disks with the theory of black holes. In this thesis, we explore via radiative transfer postprocessing calculations the observational signatures of black holes. We investigate disk spectra by analyzing general relativistic magnetohydrodynamic (GRMHD) simulations of accretion disks. For the most part there are no surprises - the resulting GRMHD spectrum is very close to the analytic Novikov & Thorne (1973) prediction from decades past, except for a small modification in the case of spinning black holes, which exhibit a high-energy power-law tail that is sourced by hot Comptonized gas from within the plunging region of the accretion flow. These conclusions are borne out by both 1D and 3D radiative transfer calculations of the disk. Significant effort was spent in developing from scratch the 3D radiative code that we used for the analysis. The code is named HERO (Hybrid Evaluator for Radiative Objects) and it is a new general purpose grid-based 3D general relativistic radiative solver.
546 $a English
590 $a School code: 0084
650 4 $a Astronomy. $3 517668
653 $a Black holes
653 $a Numerical methods
653 $a Radiation
690 $a 0606
710 2 $a Harvard University. $b Astronomy. $e degree granting institution. $3 3823472
720 1 $a Narayan, Ramesh $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 77-06B.
790 $a 0084
791 $a Ph.D.
792 $a 2015
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3739150