東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Constraints on Quasar Geometry from ...

Moraczewski, Leo.

Linked to FindBook

Google Book

Amazon

博客來

Constraints on Quasar Geometry from Sloan Digital Sky Survey.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Constraints on Quasar Geometry from Sloan Digital Sky Survey./
Author:	Moraczewski, Leo.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	54 p.
Notes:	Source: Masters Abstracts International, Volume: 82-05.
Contained By:	Masters Abstracts International82-05.
Subject:	Physics. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28151253
ISBN:	9798684602610

Constraints on Quasar Geometry from Sloan Digital Sky Survey.
Moraczewski, Leo.

Constraints on Quasar Geometry from Sloan Digital Sky Survey. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 54 p.

Source: Masters Abstracts International, Volume: 82-05.

Thesis (M.S.)--Creighton University, 2020.

This item must not be sold to any third party vendors.

Current quasar models assume a super massive black hole in the center of the quasar, with an accretion disk surrounding it. The accretion disk is believed to be a rapidly rotating, geometrically thin but optically thick disk. The orientation of the accretion disk is predicted to have a significant effect on the observed spectral emission features of quasars. Results are presented which test that model based on a study of the rest frame UV and optical spectra using the data in the Sloan Digital Sky Survey quasar spectral database, Data Release 12. Using the [OIII]λ5007 emission line equivalent width as a measure of the disk inclination angle, various emission line and continuum features in different parts of the spectrum are tested. This could provide insight into out flowing winds and the overall geometry of the broad line region. The results suggest a correlation between the orientation of the accretion disk and the orientation of the broadline region.

ISBN: 9798684602610Subjects--Topical Terms:

516296
Physics.
Subjects--Index Terms:

Accretion disk

Constraints on Quasar Geometry from Sloan Digital Sky Survey.
LDR:02217nmm a2200433 4500 001 2279770
005 20210823083440.5
008 220723s2020 ||||||||||||||||| ||eng d
020 $a 9798684602610
035 $a (MiAaPQ)AAI28151253
035 $a AAI28151253
040 $a MiAaPQ $c MiAaPQ
100 1 $a Moraczewski, Leo. $3 3558244
245 1 0 $a Constraints on Quasar Geometry from Sloan Digital Sky Survey.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2020
300 $a 54 p.
500 $a Source: Masters Abstracts International, Volume: 82-05.
500 $a Advisor: Baruth, Andrew.
502 $a Thesis (M.S.)--Creighton University, 2020.
506 $a This item must not be sold to any third party vendors.
520 $a Current quasar models assume a super massive black hole in the center of the quasar, with an accretion disk surrounding it. The accretion disk is believed to be a rapidly rotating, geometrically thin but optically thick disk. The orientation of the accretion disk is predicted to have a significant effect on the observed spectral emission features of quasars. Results are presented which test that model based on a study of the rest frame UV and optical spectra using the data in the Sloan Digital Sky Survey quasar spectral database, Data Release 12. Using the [OIII]λ5007 emission line equivalent width as a measure of the disk inclination angle, various emission line and continuum features in different parts of the spectrum are tested. This could provide insight into out flowing winds and the overall geometry of the broad line region. The results suggest a correlation between the orientation of the accretion disk and the orientation of the broadline region.
590 $a School code: 0339.
650 4 $a Physics. $3 516296
650 4 $a Astronomy. $3 517668
650 4 $a Astrophysics. $3 535904
650 4 $a Information technology. $3 532993
650 4 $a Optics. $3 517925
650 4 $a Atmospheric sciences. $3 3168354
653 $a Accretion disk
653 $a Broad line region
653 $a Disk inclination angle
653 $a Optical spectra
653 $a Quasar
653 $a Spectral emission
653 $a Supermassive black hole
690 $a 0605
690 $a 0606
690 $a 0752
690 $a 0489
690 $a 0596
690 $a 0725
710 2 $a Creighton University. $b Physics. $3 3558245
773 0 $t Masters Abstracts International $g 82-05.
790 $a 0339
791 $a M.S.
792 $a 2020
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28151253