WorldCat Identities

Schulze, Andreas

Overview
Works: 194 works in 272 publications in 4 languages and 482 library holdings
Genres: Comic books, strips, etc  History  Exhibition catalogs  Field guides  Comics (Graphic works) 
Roles: Author, Contributor, Illustrator, Other, dgs, Editor, Performer, Narrator, Artist, Arranger, Interviewer, Dedicatee, Actor
Classifications: PN6757, 523.8875
Publication Timeline
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Most widely held works about Andreas Schulze
 
Most widely held works by Andreas Schulze
Demographics of supermassive black holes by Andreas Schulze( )

3 editions published in 2011 in English and held by 31 WorldCat member libraries worldwide

Supermassive black holes are a fundamental component of the universe in general and of galaxies in particular. Almost every massive galaxy harbours a supermassive black hole (SMBH) in its center. Furthermore, there is a close connection between the growth of the SMBH and the evolution of its host galaxy, manifested in the relationship between the mass of the black hole and various properties of the galaxy's spheroid component, like its stellar velocity dispersion, luminosity or mass. Understanding this relationship and the growth of SMBHs is essential for our picture of galaxy formation and evolution. In this thesis, I make several contributions to improve our knowledge on the census of SMBHs and on the coevolution of black holes and galaxies.The first route I follow on this road is to obtain a complete census of the black hole population and its properties. Here, I focus particularly on active black holes, observable as Active Galactic Nuclei (AGN) or quasars. These are found in large surveys of the sky. In this thesis, I use one of these surveys, the Hamburg/ESO survey (HES), to study the AGN population in the local volume (z~0). The demographics of AGN are traditionally represented by the AGN luminosity function, the distribution function of AGN at a given luminosity. I determined the local (z<0.3) optical luminosity function of so-called type 1 AGN, based on the broad band B_J magnitudes and AGN broad Halpha emission line luminosities, free of contamination from the host galaxy. I combined this result with fainter data from the Sloan Digital Sky Survey (SDSS) and constructed the best current optical AGN luminosity function at z~0. The comparison of the luminosity function with higher redshifts supports the current notion of 'AGN downsizing', i.e. the space density of the most luminous AGN peaks at higher redshifts and the space density of less luminous AGN peaks at lower redshifts.However, the AGN luminosity function does not reveal the full picture of active black hole demographics. This requires knowledge of the physical quantities, foremost the black hole mass and the accretion rate of the black hole, and the respective distribution functions, the active black hole mass function and the Eddington ratio distribution function. I developed a method for an unbiased estimate of these two distribution functions, employing a maximum likelihood technique and fully account for the selection function. I used this method to determine the active black hole mass function and the Eddington ratio distribution function for the local universe from the HES. I found a wide intrinsic distribution of black hole accretion rates and black hole masses. The comparison of the local active black hole mass function with the local total black hole mass function reveals evidence for 'AGN downsizing', in the sense that in the local universe the most massive black holes are in a less active stage then lower mass black holes. The second route I follow is a study of redshift evolution in the black hole-galaxy relations. While theoretical models can in general explain the existence of these relations, their redshift evolution puts strong constraints on these models. Observational studies on the black hole-galaxy relations naturally suffer from selection effects. These can potentially bias the conclusions inferred from the observations, if they are not taken into account. I investigated the issue of selection effects on type 1 AGN samples in detail and discuss various sources of bias, e.g. an AGN luminosity bias, an active fraction bias and an AGN evolution bias. If the selection function of the observational sample and the underlying distribution functions are known, it is possible to correct for this bias. I present a fitting method to obtain an unbiased estimate of the intrinsic black hole-galaxy relations from samples that are affected by selection effects. Third, I try to improve our census of dormant black holes and the determination of their masses. One of the most important techniques to determine the black hole mass in quiescent galaxies is via stellar dynamical modeling. This method employs photometric and kinematic observations of the galaxy and infers the gravitational potential from the stellar orbits. This method can reveal the presence of the black hole and give its mass, if the sphere of the black hole's gravitational influence is spatially resolved. However, usually the presence of a dark matter halo is ignored in the dynamical modeling, potentially causing a bias on the determined black hole mass. I ran dynamical models for a sample of 12 galaxies, including a dark matter halo. For galaxies for which the black hole's sphere of influence is not well resolved, I found that the black hole mass is systematically underestimated when the dark matter halo is ignored, while there is almost no effect for galaxies with well resolved sphere of influence
Langzeitverläufe von Glaukomdrainageimplantaten; Vergleich des Molteno Implantats mit dem Ahmed glaucoma Valve by Andreas Schulze( )

2 editions published in 2007 in German and held by 19 WorldCat member libraries worldwide

Tierstimmen Säugetiere, Lurche, Insekten by Andreas Schulze( Recording )

10 editions published between 1996 and 2006 in German and Undetermined and held by 17 WorldCat member libraries worldwide

ECO : Datenbank zur Stoffbilanzierung in Waldökosystemen by Jörg Hoppe( Book )

1 edition published in 1997 in German and held by 16 WorldCat member libraries worldwide

Herr Ostertag macht Geräusche by Preben Kaas( Book )

2 editions published in 2013 in German and held by 15 WorldCat member libraries worldwide

Julian verfügt über enzyklopädisches Wissen. Herr und Frau Ostertag finden ihren Sohn manchmal seltsam. Der alte Preben Kaas weiß, was es mit Julian wirklich auf sich hat. Der Japaner Koe taucht spät auf, hat von Anfang an aber Fieses vor, für das wiederum der Belgier zuständig ist. Und Prebens Schwester kennt sich mit "Glückskindern" aus. Eine raffiniert aufgebaute Geschichte, in der zahlreiche Figuren auftauchen und zu Wort kommen, und in der sich Stück für Stück die Zusammenhänge offenbaren, das große Ganze manifestiert. „Andreas Schulze erzählt die besondere Geschichte auf eine besondere Art. Er verschwindet als Autor - sogar vom Cover des Buches - und lässt als Autor und über weite Phasen als Ich-Erzähler Preben Kaas, den Bruder von Emily, auftreten. Preben sucht Kontakt zu Julian und nimmt ihn und seine Eltern mit zu Emily, wo diese zunächst Julians Fähigkeiten testet und dann das Ergebnis der Familie mitteilt. Die Chance, alle Fehler in kürzester Zeit ungeschehen zu machen, haben aus Julian einen ungewöhnlichen Jugendlichen werden lassen, distanziert, von sich selbst überzeugt, in Ansätzen arrogant und sehr clever. „Lonesome" wird er in der Klasse genannt und sonnt sich irgendwie im Ruhm seines Anderseins. Ein Buch wie ein Labyrinth. Ein roter Faden, dessen Knoten man lösen muss, ehe man ihm durch das Labyrinth folgen kann. Viele Überraschungen und wie gesagt: ein erstaunliches Debüt" (titel-kulturmagazin.net). Gewinner des Jugendliteraturpreises Goldener Pick 2012
Abenteuer Wissenschaft - die Abrafaxe unterwegs mit Gottfried Wilhelm Leibniz by Jens Uwe Schubert( Book )

1 edition published in 2016 in German and held by 13 WorldCat member libraries worldwide

Durch Westchina zum K 2 Expeditionen ins Grenzland by Andreas Schulze( Book )

3 editions published in 1988 in German and held by 13 WorldCat member libraries worldwide

Viewpoints and motives on religion and spirituality of professionals in perinatal medicine by Esther Schouten( )

1 edition published in 2016 in English and held by 10 WorldCat member libraries worldwide

Vogelstimmen-Trainer by Jean C Roché( Recording )

6 editions published between 1999 and 2008 in German and Undetermined and held by 9 WorldCat member libraries worldwide

Vogelstimmen am Wasser by Andreas Schulze( Recording )

4 editions published between 1996 and 1997 in German and Undetermined and held by 9 WorldCat member libraries worldwide

PROTEUS Generische e-Maintenance-Plattform : Schlussbericht by Andreas Schulze( )

2 editions published in 2005 in German and held by 9 WorldCat member libraries worldwide

Das grosse waldlauferhandbuch by Andreas Schulze( )

4 editions published between 2012 and 2013 in German and held by 8 WorldCat member libraries worldwide

Vogelstimmen erkennen : Gesänge und Rufe der 75 häufigsten Arten : mit Vogeluhr( Recording )

6 editions published between 1999 and 2009 in German and held by 8 WorldCat member libraries worldwide

Die Vogelstimmen Europas, Nordafrikas und Vorderasiens by Andreas Schulze( Recording )

5 editions published between 2003 and 2008 in German and Aleut and held by 7 WorldCat member libraries worldwide

Vogelstimmen im Gebirge : heimische Vögel mit 26 Farbfotos (Vogelübersicht) und ausführlichen Vogelbeschreibungen im Textbuch by Andreas Schulze( Recording )

2 editions published in 1996 in German and held by 7 WorldCat member libraries worldwide

Die Vogelstimmen Europas, Nordafrikas und Vorderasiens : 819 Vogelarten( Recording )

1 edition published in 2003 in German and held by 7 WorldCat member libraries worldwide

Aves rapaces by Andreas Schulze( Book )

5 editions published between 1996 and 1998 in Spanish and held by 6 WorldCat member libraries worldwide

Der Drachengott die Abrafaxe in der Java-See by Andreas Schulze( Book )

2 editions published in 2007 in German and held by 6 WorldCat member libraries worldwide

Vogelstimmen in Park und Garten : heimische Vögel mit 24 Farbfotos (Vogelübersicht) und ausführlichen Vogelbeschreibungen im Textbuch( Recording )

1 edition published in 1994 in German and held by 5 WorldCat member libraries worldwide

Tierstimmen - Säugetiere, Lurche, Insekten 31 heimische Tiere mit 31 Farbfotos zum Bestimmen ; mit gesprochenen Erläuterungen( Recording )

2 editions published between 1995 and 2005 in German and held by 5 WorldCat member libraries worldwide

 
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Audience Level
1
  Kids General Special  
Audience level: 0.91 (from 0.86 for Vogelstimm ... to 0.95 for Tierstimme ...)

Vogelstimmen erkennen : Gesänge und Rufe der 75 häufigsten Arten : mit Vogeluhr
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Languages
German (53)

English (5)

Spanish (5)

Aleut (1)