Cosmic ray diffusion in the galaxy and diffuse gamma emission:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Berlin [u.a.]
Springer
2012
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| Schriftenreihe: | Springer Theses
|
| Schlagworte: | |
| Online-Zugang: | Inhaltstext Inhaltsverzeichnis |
| Beschreibung: | XI, 146 S. Ill., graph. Darst. 235 mm x 155 mm |
| ISBN: | 9783642299483 3642299482 |
Internformat
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Datensatz im Suchindex
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IMAGE 1
CONTENTS
1 INTRODUCTION 1
REFERENCES 5
2 COSMIC RAY DIFFUSION IN THE GALAXY 7
2.1 INTRODUCTION 7
2.2 HISTORY O F C R MEASUREMENTS 7
2.3 THE INTERSTELLAR ENVIRONMENT O F OUR GALAXY 9
2.3.1 INTRODUCTORY CONSIDERATIONS 9
2.3.2 THE INTERSTELLAR GAS 10
2.3.3 SNRS AND PULSARS 17
2.3.4 THE MAGNETIC FIELD 19
2.4 C R PROPAGATION: THE DIFFUSION EQUATION 21
2.4.1 INTRODUCTORY CONSIDERATIONS 21
2.4.2 DIFFUSION EQUATION 22
REFERENCES 26
3 NUMERICAL CODES THAT SOLVE THE C R DIFFUSION EQUATIONS 29
3.1 NUMERICAL APPROACH TO THE SOLUTION OF C R DIFFUSION EQUATION 29
3.2 DRAGON CODE: A DETAILED DESCRIPTION V F 31
REFERENCES 33
4 PROPAGATION O F C R NUCLEI: OUR RESULTS 35
4.1 INTRODUCTION 35
4.2 HOW TO TEST DIFFUSION MODELS: B/C, ANTIPROTONS. PREVIOUS RESULTS 35
4.3 OUR MAXIMUM LIKELIHOOD ANALYSIS ON B/C AND ANTIPROTON DATA 4 2
4.3.1 OUR METHOD AND RESULTS 4 2
HTTP://D-NB.INFO/1021362565
IMAGE 2
X CONTENTS
4.3.2 DISCUSSION ON B/C ANALYSIS 47
4.3.3 DISCUSSION ON P / P AND JOINT ANALYSIS 49
4.4 OUR PREFERRED MODEL 5 0
4.5 MINIMAL AND MAXIMAL MODELS 51
4.6 DISCUSSION 53
4.6.1 COMPARISON WITH OTHER RESULTS 53
4.6.2 SYSTEMATIC UNCERTAINTIES 55
REFERENCES 56
5 THE LEPTONIC FIELD 59
5.1 INTRODUCTION 59
5.2 PROPAGATION O F C R ELECTRONS 59
5.3 PRE-FERMI MEASUREMENTS O F C R ELECTRON AND POSITRON SPECTRUM 64
5.4 ASTROPHYSICAL EXPLANATIONS O F THE PRE-FERMI LEPTONIC EXCESSES 66
5.5 DARK MATTER INTERPRETATION 69
5.5.1 INTRODUCTION 69
5.5.2 INTERPRETATION OF PAMELA AND ATIC DATA 72
5.6 FERMI MEASUREMENT O F CR ELECTRON+POSITRON SPECTRUM 74
5.7 INTERPRETATION O F 2009 DATASET 79
5.7.1 SINGLE COMPONENT MODELS 79
5.7.2 PULSAR MODELS 83
5.7.3 DARK MATTER MODELS 88
5.7.4 COMPARISON WITH OTHER INTERPRETATIONS 9 0
5.8 INTERPRETATION O F 2010 DATASET AND ANISOTROPY UPPER LIMITS . . . 93
5.8.1 INTRODUCTION 93
5.8.2 SINGLE COMPONENT MODELS 93
5.8.3 DOUBLE COMPONENT MODELS 98
5.8.4 CONTRIBUTION FROM NEARBY PULSARS AND SNRS 99
5.8.5 COMPATIBILITY WITH UPPER LIMITS ON ANISOTROPY 103
5.9 FERMI PRELIMINARY MEASUREMENT OF C R POSITRON SPECTRUM 105
REFERENCES 107
6 DIFFUSE GAMMA RAY EMISSION FROM THE GALAXY I L L
6.1 OUTLINE I L L
6.2 INTRODUCTION 111
6.2.1 HOW DIFFUSE Y RAYS ARE PRODUCED I L L
6.2.2 BRIEF OVERVIEW OF PRE-FERMI Y-RAY OBSERVATIONS 113
6.2.3 OPEN PROBLEMS AFTER EGRET ERA 113
6.3 FERMI-LAT VIEW O F GAMMA-RAY SKY 114
6.4 SPATIAL-DEPENDENT DIFFUSION COEFFICIENT AS A SOLUTION TO THE
GRADIENT PROBLEM 117
IMAGE 3
CONTENTS XI
6.4.1 THE IDEA 117
6.4.2 THE METHOD 118
6.4.3 RESULTS 119
REFERENCES 125
7 CONCLUSIONS AND FUTURE PLANS 127
APPENDIX A: THE DIFFUSION EQUATION IN CYLINDRICAL COORDINATES . . . .
131
APPENDIX B: DRAGON CODE: A DESCRIPTION 135
APPENDIX C: SOLUTION O F THE TRANSPORT EQUATION FOR A PULSAR-LIKE SOURCE
143
INDEX 145 |
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| dewey-ones | 523 - Specific celestial bodies and phenomena |
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| dewey-search | 523.0197223 |
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| dewey-tens | 520 - Astronomy and allied sciences |
| discipline | Physik Geographie |
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| spelling | Gaggero, Daniele Verfasser (DE-588)1026989086 aut Cosmic ray diffusion in the galaxy and diffuse gamma emission Daniele Gaggero Berlin [u.a.] Springer 2012 XI, 146 S. Ill., graph. Darst. 235 mm x 155 mm txt rdacontent n rdamedia nc rdacarrier Springer Theses Ausbreitung (DE-588)4003694-7 gnd rswk-swf Kosmische Strahlung (DE-588)4165371-3 gnd rswk-swf Gammastrahlung (DE-588)4019205-2 gnd rswk-swf Milchstraßensystem (DE-588)4169926-9 gnd rswk-swf Kosmische Strahlung (DE-588)4165371-3 s Ausbreitung (DE-588)4003694-7 s Milchstraßensystem (DE-588)4169926-9 g Gammastrahlung (DE-588)4019205-2 s DE-604 X:MVB text/html http://deposit.dnb.de/cgi-bin/dokserv?id=4004428&prov=M&dok_var=1&dok_ext=htm Inhaltstext DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025242426&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Gaggero, Daniele Cosmic ray diffusion in the galaxy and diffuse gamma emission Ausbreitung (DE-588)4003694-7 gnd Kosmische Strahlung (DE-588)4165371-3 gnd Gammastrahlung (DE-588)4019205-2 gnd |
| subject_GND | (DE-588)4003694-7 (DE-588)4165371-3 (DE-588)4019205-2 (DE-588)4169926-9 |
| title | Cosmic ray diffusion in the galaxy and diffuse gamma emission |
| title_auth | Cosmic ray diffusion in the galaxy and diffuse gamma emission |
| title_exact_search | Cosmic ray diffusion in the galaxy and diffuse gamma emission |
| title_full | Cosmic ray diffusion in the galaxy and diffuse gamma emission Daniele Gaggero |
| title_fullStr | Cosmic ray diffusion in the galaxy and diffuse gamma emission Daniele Gaggero |
| title_full_unstemmed | Cosmic ray diffusion in the galaxy and diffuse gamma emission Daniele Gaggero |
| title_short | Cosmic ray diffusion in the galaxy and diffuse gamma emission |
| title_sort | cosmic ray diffusion in the galaxy and diffuse gamma emission |
| topic | Ausbreitung (DE-588)4003694-7 gnd Kosmische Strahlung (DE-588)4165371-3 gnd Gammastrahlung (DE-588)4019205-2 gnd |
| topic_facet | Ausbreitung Kosmische Strahlung Gammastrahlung Milchstraßensystem |
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