Multidimensional, two-moment multi-group neutrino transport and its application to black-hole accretion tori as remnants of neutron-star mergers:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
2012
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| Schlagworte: | |
| Online-Zugang: | Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20120620-1100777-1-9 Inhaltsverzeichnis |
| Beschreibung: | VI, 177 S. graph. Darst. |
Internformat
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| 245 | 1 | 0 | |a Multidimensional, two-moment multi-group neutrino transport and its application to black-hole accretion tori as remnants of neutron-star mergers |c Oliver Just |
| 264 | 1 | |c 2012 | |
| 300 | |a VI, 177 S. |b graph. Darst. | ||
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Datensatz im Suchindex
| _version_ | 1804149348810883072 |
|---|---|
| adam_text | IMAGE 1
CONTENTS
1 I N T R O D U C T I O N 1
1.1 OBSERVATIONAL CONTEXT 2
1.1.1 R-PROCESS NUCLEOSYNTHESIS 2
1.1.2 GAMMA-RAY BURSTS 4
1.1.3 GRAVITATIONAL WAVES FROM NEUTRON-STAR MERGERS 5
1.2 THEORETICAL PICTURE 6
1.2.1 NEUTRON-STAR MERGERS 6
1.2.2 MODELS OF ACCRETION DISKS 10
1.2.3 POST-MERGER REMNANT DISKS 12
1.3 PREVIOUS WORKS 14
1.4 AIMS AND ORGANIZATION OF THIS THESIS 17
1.5 NOTATIONAL CONVENTIONS 18
2 M U L T I - D I M E N S I O N A L R A D I A T I O N H Y D R O D Y N A
M I C S 1 9
2.1 OVERVIEW OF EMPLOYED METHODS 19
2.2 THE 0 ( V / C ) EQUATIONS OF RADIATION HYDRODYNAMICS 22
2.2.1 THE EQUATION OF RADIATIVE TRANSFER IN THE COMOVING FRAME 22
2.2.2 RADIATION MOMENT EQUATIONS 23
2.2.3 SOURCE TERMS AND COUPLING TO HYDRODYNAMICS 25
2.2.4 MOMENT CLOSURE SCHEMES 27
2.3 NUMERICAL METHOD 31
2.3.1 GENERAL CONSIDERATIONS 31
2.3.2 BASIC DISCRETIZATION SCHEME 31
2.3.3 HYPERBOLIC PART 33
2.3.4 VELOCITY DEPENDENT TERMS AND GEOMETRIC SOURCE TERMS 34
2.3.5 PHYSICAL SOURCE TERMS 37
2.3.6 PASSIVE IMPLEMENTATION OF ^-ANNIHILATION 39
2.3.7 MAGNETO-/HYDRODYNAMICS 41
2.3.8 TIME-UPDATE SCHEME 41
2.3.9 GLOBAL CONSERVATION PROPERTIES 42
2.4 TEST PROBLEMS 43
2.4.1 ONE-DIMENSIONAL IDEALIZED TEST PROBLEMS 44
2.4.2 TWO-DIMENSIONAL IDEALIZED TEST PROBLEMS 50
2.4.3 TEST PROBLEMS INCLUDING MICROPHYSICS 55
V
HTTP://D-NB.INFO/1026734118
IMAGE 2
VI CONTENTS
3 I N V E S T I G A T E D M O D E L S 1: V I S C O U S P O S T - M E R G
E R TORI 6 1
3.1 MODEL SETUP 61
3.1.1 GRAVITATIONAL POTENTIAL 61
3.1.2 INITIAL MODEL AND SELECTED PARAMETERS 63
3.1.3 DETAILS OF THE EVOLUTION SCHEME 65
3.2 DEFINITIONS OF GLOBAL DIAGNOSTIC QUANTITIES 69
3.3 EVOLUTION OF A REFERENCE MODEL 70
3.3.1 INITIAL TRANSIENT PHASE 70
3.3.2 DISK STRUCTURE 81
3.3.3 NEUTRINO EMISSION AND COOLING CHARACTERISTICS 82
3.3.4 CONVECTIVE INSTABILITY 88
3.3.5 OUTFLOW PROPERTIES 91
3.3.6 SHORT-GRB VIABILITY 98
3.4 DIFFERENT INITIAL TORUS MASSES 99
3.5 DIFFERENT SHEAR VISCOSITIES 103
3.6 DIFFERENT BLACK-HOLE SPIN 109
3.7 DISCUSSION AND COMPARISON WITH EXISTING STUDIES 112
4 I N V E S T I G A T E D M O D E L S 2: M A G N E T I Z E D P O S T - M
E R G E R T O R I 1 1 9
4.1 MAGNETIC FIELDS IN ACCRETION DISKS 120
4.1.1 THE EQUATIONS OF IDEAL MAGNETOHYDRODYNAMICS 120
4.1.2 THE MAGNETO-ROTATIONAL INSTABILITY 121
4.2 MODEL SETUP 123
4.2.1 INITIAL MODEL AND SELECTED PARAMETERS 123
4.2.2 DETAILS OF THE EVOLUTION SCHEME 124
4.3 RESULTS 125
4.3.1 DYNAMIC EVOLUTION 125
4.3.2 NEUTRINO EMISSION 133
4.3.3 OUTFLOW PROPERTIES 133
4.4 DISCUSSION 137
5 S U M M A R Y , C O N C L U S I O N S A N D O U T L O O K 1 4 5
A P P E N D I X 1 5 1
A R E L A T I V E S I Z E O F T E R M S I N T H E R A D I A T I O N M O
M E N T E Q U A T I O N S 1 5 1
B N U M E R I C A L T R E A T M E N T O F I D E A L M A G N E T O H Y D
R O D Y N A M I C S 1 5 5
C N U M E R I C A L T R E A T M E N T O F V I S C O S I T Y 1 5 9
L I S T O F A B B R E V I A T I O N S 1 6 3
B I B L I O G R A P H Y 1 6 5
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| spelling | Just, Oliver Verfasser (DE-588)1026733928 aut Multidimensional, two-moment multi-group neutrino transport and its application to black-hole accretion tori as remnants of neutron-star mergers Oliver Just 2012 VI, 177 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier München, Techn. Univ., Diss., 2012 Neutrinotransport (DE-588)4277535-8 gnd rswk-swf Akkretionsscheibe (DE-588)4312917-1 gnd rswk-swf Verschmelzung (DE-588)4337547-9 gnd rswk-swf Schwarzes Loch (DE-588)4053793-6 gnd rswk-swf Neutronenstern (DE-588)4171660-7 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Schwarzes Loch (DE-588)4053793-6 s Akkretionsscheibe (DE-588)4312917-1 s Neutronenstern (DE-588)4171660-7 s Verschmelzung (DE-588)4337547-9 s Neutrinotransport (DE-588)4277535-8 s DE-604 Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:91-diss-20120620-1100777-1-9 http://mediatum.ub.tum.de/node?id=1100777 Verlag kostenfrei Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20120620-1100777-1-9 Resolving-System DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025175847&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Just, Oliver Multidimensional, two-moment multi-group neutrino transport and its application to black-hole accretion tori as remnants of neutron-star mergers Neutrinotransport (DE-588)4277535-8 gnd Akkretionsscheibe (DE-588)4312917-1 gnd Verschmelzung (DE-588)4337547-9 gnd Schwarzes Loch (DE-588)4053793-6 gnd Neutronenstern (DE-588)4171660-7 gnd |
| subject_GND | (DE-588)4277535-8 (DE-588)4312917-1 (DE-588)4337547-9 (DE-588)4053793-6 (DE-588)4171660-7 (DE-588)4113937-9 |
| title | Multidimensional, two-moment multi-group neutrino transport and its application to black-hole accretion tori as remnants of neutron-star mergers |
| title_auth | Multidimensional, two-moment multi-group neutrino transport and its application to black-hole accretion tori as remnants of neutron-star mergers |
| title_exact_search | Multidimensional, two-moment multi-group neutrino transport and its application to black-hole accretion tori as remnants of neutron-star mergers |
| title_full | Multidimensional, two-moment multi-group neutrino transport and its application to black-hole accretion tori as remnants of neutron-star mergers Oliver Just |
| title_fullStr | Multidimensional, two-moment multi-group neutrino transport and its application to black-hole accretion tori as remnants of neutron-star mergers Oliver Just |
| title_full_unstemmed | Multidimensional, two-moment multi-group neutrino transport and its application to black-hole accretion tori as remnants of neutron-star mergers Oliver Just |
| title_short | Multidimensional, two-moment multi-group neutrino transport and its application to black-hole accretion tori as remnants of neutron-star mergers |
| title_sort | multidimensional two moment multi group neutrino transport and its application to black hole accretion tori as remnants of neutron star mergers |
| topic | Neutrinotransport (DE-588)4277535-8 gnd Akkretionsscheibe (DE-588)4312917-1 gnd Verschmelzung (DE-588)4337547-9 gnd Schwarzes Loch (DE-588)4053793-6 gnd Neutronenstern (DE-588)4171660-7 gnd |
| topic_facet | Neutrinotransport Akkretionsscheibe Verschmelzung Schwarzes Loch Neutronenstern Hochschulschrift |
| url | http://mediatum.ub.tum.de/node?id=1100777 https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20120620-1100777-1-9 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025175847&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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