Hyper-Velocity Impacts on Rubble Pile Asteroids (eBook)

(Autor)

eBook Download: PDF
2016 | 1st ed. 2017
XXIX, 164 Seiten
Springer International Publishing (Verlag)
978-3-319-47985-9 (ISBN)

Lese- und Medienproben

Hyper-Velocity Impacts on Rubble Pile Asteroids - Jakob Deller
Systemvoraussetzungen
96,29 inkl. MwSt
  • Download sofort lieferbar
  • Zahlungsarten anzeigen
The thesis presents a tool to create rubble pile asteroid simulants for use in numerical impact experiments, and provides evidence that the asteroid disruption threshold and the resultant fragment size distribution are sensitive to the distribution of internal voids. This thesis represents an important step towards a deeper understanding of fragmentation processes in the asteroid belt, and provides a tool to infer the interior structure of rubble pile asteroids.
 
Most small asteroids are 'rubble piles' - re-accumulated fragments of debris from earlier disruptive collisions. The study of fragmentation processes for rubble pile asteroids plays an essential part in understanding their collisional evolution. An important unanswered question is 'what is the distribution of void space inside rubble pile asteroids?' As a result from this thesis, numerical impact experiments can now be used to link surface features to the internal structure and therefore help to answer this question.
 
Applying this model to asteroid Šteins, which was imaged from close range by the Rosetta spacecraft, a large hill-like structure is shown to be most likely primordial, while a catena of pits can be interpreted as evidence for the existence of fracturing of pre-existing internal voids.
 



Jakob Deller has defended his PhD thesis in September 2015. His PhD project was jointly accompanied and funded by the University of Kent and the Max Planck Institute for Solar System Research, Göttingen. He was awarded the Pierazzo International Student Travel Award by the Planetary Science Institute, Tucson, Arizona, and presented his work in multiple international conferences. He gained observing experience at the NTT at La Silla Observatory, Chile.

He was awarded his M. Sc. in November 2011 with a thesis on the 'Stability of some recently found circumbinary systems' supervised by Prof. Dr. S. Dreizler at the Institute for Astrophysics Göttingen, Germany. 

Jakob Deller has defended his PhD thesis in September 2015. His PhD project was jointly accompanied and funded by the University of Kent and the Max Planck Institute for Solar System Research, Göttingen. He was awarded the Pierazzo International Student Travel Award by the Planetary Science Institute, Tucson, Arizona, and presented his work in multiple international conferences. He gained observing experience at the NTT at La Silla Observatory, Chile.He was awarded his M. Sc. in November 2011 with a thesis on the ‘Stability of some recently found circumbinary systems’ supervised by Prof. Dr. S. Dreizler at the Institute for Astrophysics Göttingen, Germany. 

Introduction.- Asteroids and Comets in the Solar System.- The Interior of Asteroids.- Impact Processes in the Solar System.- Simulating Impacts on Rubble Pile Asteroids.- Methods.- Numerical Simulations of Impact Events.- Gravitational Forces in High-Resolution Impact Simulations.- A New Approach to Modelling Impacts on Rubble Pile Asteroid Simulants.- Rubble Pile Asteroid Simulants.- Hydrocode Impact Simulations.- Assessing the Influence of Rubble Pile Structures on ImpactSimulations.- Comparing Outcomes of Simulations.- Results — Sensitivity to Model Parameters.- Summary.- Impacts on Rubble Pile Asteroid Šteins.- Asteroid Šteins.- Šteins as a Rubble Pile Asteroid.- Simulating Crater-Forming Impacts on Asteroid Šteins.- The Influence of Gravitational Forces on Simulated Impactson Šteins.- Reproducing Surface Features Observed on Šteins.- Asteroid Šteins: Conclusions.- Discussion.- A Simulant for the Large Scale Structure of Rubble Pile Asteroids.- The Internal Structure of Rubble Pile Asteroids in Impact Events.- Linking Surface Features on Šteins to its Internal Structure.- Šteins as a YORP Evolved Asteroid.- Applicability of the Rubble Pile Interior Model.- Future Applications of the Model.- Bibliography.-

Erscheint lt. Verlag 1.12.2016
Reihe/Serie Springer Theses
Zusatzinfo XXIX, 164 p. 69 illus., 55 illus. in color.
Verlagsort Cham
Sprache englisch
Themenwelt Naturwissenschaften Geowissenschaften Geologie
Naturwissenschaften Physik / Astronomie Astronomie / Astrophysik
Technik
Schlagworte Collisional Evolution • Fragmentation Processes • Hypervelocity Impact Simulations • Internal Structure of Asteroids • Rubble Pile Asteroids
ISBN-10 3-319-47985-7 / 3319479857
ISBN-13 978-3-319-47985-9 / 9783319479859
Haben Sie eine Frage zum Produkt?
PDFPDF (Wasserzeichen)
Größe: 9,6 MB

DRM: Digitales Wasserzeichen
Dieses eBook enthält ein digitales Wasser­zeichen und ist damit für Sie persona­lisiert. Bei einer missbräuch­lichen Weiter­gabe des eBooks an Dritte ist eine Rück­ver­folgung an die Quelle möglich.

Dateiformat: PDF (Portable Document Format)
Mit einem festen Seiten­layout eignet sich die PDF besonders für Fach­bücher mit Spalten, Tabellen und Abbild­ungen. Eine PDF kann auf fast allen Geräten ange­zeigt werden, ist aber für kleine Displays (Smart­phone, eReader) nur einge­schränkt geeignet.

Systemvoraussetzungen:
PC/Mac: Mit einem PC oder Mac können Sie dieses eBook lesen. Sie benötigen dafür einen PDF-Viewer - z.B. den Adobe Reader oder Adobe Digital Editions.
eReader: Dieses eBook kann mit (fast) allen eBook-Readern gelesen werden. Mit dem amazon-Kindle ist es aber nicht kompatibel.
Smartphone/Tablet: Egal ob Apple oder Android, dieses eBook können Sie lesen. Sie benötigen dafür einen PDF-Viewer - z.B. die kostenlose Adobe Digital Editions-App.

Buying eBooks from abroad
For tax law reasons we can sell eBooks just within Germany and Switzerland. Regrettably we cannot fulfill eBook-orders from other countries.

Mehr entdecken
aus dem Bereich
Aufbau der Erde, Erdgeschichte und Geologie Deutschlands

von Alecia M. Spooner

eBook Download (2023)
Wiley-VCH GmbH (Verlag)
22,99