published_or_final_version / abstract / Physics / Doctoral / Doctor of Philosophy

Chan Man Ho = 中微子星的形成與特徵 / 陳文豪. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (leaves 84-87). / Text in English; abstracts in English and Chinese. / Chan Man Ho = Zhong wei zi xing de xing cheng yu te zheng / Chen Wenhao. / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- History of dark matter research --- p.1 / Chapter 1.2 --- Method of searching for dark matter --- p.3 / Chapter 1.2.1 --- Observation of dark matter --- p.3 / Chapter 1.2.2 --- N-body simulation --- p.4 / Chapter 1.3 --- Candidates of dark matter --- p.7 / Chapter 1.3.1 --- Properties of neutrinos --- p.8 / Chapter 1.3.2 --- Neutrino oscillation --- p.9 / Chapter 1.3.3 --- Decay of neutrinos --- p.10 / Chapter 1.4 --- Origin of neutrino dark matter --- p.11 / Chapter 2 --- Properties of Neutrino Stars --- p.16 / Chapter 2.1 --- Hydrostatic Equilibrium --- p.16 / Chapter 2.2 --- Ultra-relativistic degenerate neutrino star --- p.17 / Chapter 2.2.1 --- Trajectory inside an ultra-relativistic neutrino star --- p.19 / Chapter 2.2.2 --- Rotation curve of an ultra-relativistic neutrino star --- p.20 / Chapter 2.3 --- Non-relativistic neutrino star --- p.21 / Chapter 2.3.1 --- Trajectories inside a non-relativistic neutrino star --- p.22 / Chapter 2.3.2 --- Rotation curve of non-relativistic neutrino stars --- p.24 / Chapter 2.4 --- Neutrino Mixing correction --- p.24 / Chapter 3 --- Neutrino star in galaxy --- p.26 / Chapter 3.1 --- Neutrino star in galactic center --- p.26 / Chapter 3.1.1 --- The rate of change of mass of neutrino star --- p.27 / Chapter 3.1.2 --- Motion inside the neutrino star in milky way --- p.27 / Chapter 3.2 --- Neutrino star in Milky Way --- p.30 / Chapter 3.2.1 --- Components of Milky Way --- p.32 / Chapter 3.2.2 --- Dark matter component in Milky Way --- p.33 / Chapter 4 --- Hot gas and Neutrino star in cluster --- p.40 / Chapter 4.1 --- Neutrino dark matter model --- p.41 / Chapter 4.1.1 --- Cowsik and McClelland model --- p.41 / Chapter 4.1.2 --- Treumann et al. model --- p.42 / Chapter 4.2 --- NFW universal dark matter profile --- p.43 / Chapter 4.3 --- Probing dark matter distribution --- p.44 / Chapter 4.4 --- Neutrino stars in clusters --- p.48 / Chapter 4.5 --- Heat source of hot gas --- p.52 / Chapter 4.5.1 --- Infall and compressional heating --- p.53 / Chapter 4.5.2 --- Heating by ejection from galaxies --- p.53 / Chapter 4.5.3 --- Heating by galaxy motion --- p.54 / Chapter 4.5.4 --- Heating by relativistic electrons --- p.55 / Chapter 4.5.5 --- Heating by photons from neutrino decay --- p.55 / Chapter 5 --- Formation of neutrino star --- p.58 / Chapter 5.1 --- Hydrodynamic code --- p.58 / Chapter 5.2 --- Hydrodynamic evolution of neutrino star --- p.61 / Chapter 5.2.1 --- Result of the simulation --- p.61 / Chapter 5.2.2 --- Scaling law of neutrino star formation --- p.66 / Chapter 5.2.3 --- Oscillation in neutrino star --- p.67 / Chapter 5.3 --- Expected Observational Results --- p.69 / Chapter 6 --- Discussion and conclusion --- p.72 / Chapter 6.1 --- Conclusion --- p.72 / Chapter 6.2 --- discussion --- p.74 / Chapter A --- Derivation of TOV equation --- p.76 / Chapter B --- Equation of state of degenerate ideal gas --- p.80 / Chapter C --- Derivation of oscillation period --- p.82 / Bibliography --- p.84

Thesis (Ph. D.)--University of Hong Kong, 2007. / Title proper from title frame. Also available in printed format.

Thesis (M.Sc.). / Written for the Dept. of Physics. Title from title page of PDF (viewed 2008/12/10). Includes bibliographical references.

The Best PhD Thesis in the Faculties of Dentistry, Engineering, Medicine and Science (University of Hong Kong), Li Ka Shing Prize,1991-1993 / published_or_final_version / Physics / Doctoral / Doctor of Philosophy

published_or_final_version / Physics / Doctoral / Doctor of Philosophy

We consider the effect of free -streaming axion emission on numerical models for the cooling of the newly born neutron star associated with SN1987A. We find that for an axion mass of greater than -10-3 eV, axion emission shortens the duration of the expected neutrino burst so significantly that it would be inconsistent with the neutrino observations made by the Kamiokande II (KII) and Irvine -Michigan- Brookhaven (IMB) detectors. However, we have not investigated the possibility that axion trapping (which should occur for masses 20.02 eV) sufficiently reduces axion emission so that axion masses greater than -2 eV would be consistent with the neutrino observations.

Tsui Lung Kwan = 致密星的準簡正模 : 以微擾方程為基礎之研究 / 徐隆焜. / Thesis submitted in: August 2003. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (leaves 98-100). / Text in English; abstracts in English and Chinese. / Tsui Lung Kwan = Zhi mi xing de zhun jian zheng mo : yi wei rao fang cheng wei ji chu zhi yan jiu / Xu Longkun. / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Oscillating Stars and Gravitational Waves --- p.1 / Chapter 1.2 --- Outline of the Thesis --- p.3 / Chapter 2 --- Stellar Structure and Mode Classifications --- p.5 / Chapter 2.1 --- Relativistic Stars --- p.5 / Chapter 2.2 --- Equation of State --- p.6 / Chapter 2.3 --- Mode Classifications --- p.9 / Chapter 3 --- Axial w-mode Oscillations --- p.16 / Chapter 3.1 --- Equations of Stellar Oscillations --- p.16 / Chapter 3.2 --- Evaluation of QNMs --- p.18 / Chapter 3.3 --- General features of QNMs --- p.20 / Chapter 4 --- Universal behavior of axial QNMs --- p.22 / Chapter 4.1 --- BBF universal curve --- p.22 / Chapter 4.2 --- Scaled Coordinates --- p.26 / Chapter 4.3 --- Universality of Vrw(r*) inside stars --- p.29 / Chapter 4.3.1 --- Searching for the universality inside stars --- p.29 / Chapter 4.3.2 --- Simple analysis --- p.35 / Chapter 4.3.3 --- The importance of R* --- p.38 / Chapter 5 --- Scaled Coordinates Logarithmic Perturbation Theory --- p.40 / Chapter 5.1 --- The scaled axial oscillation equations --- p.41 / Chapter 5.2 --- The Formalism of SCLPT --- p.41 / Chapter 5.2.1 --- Perturbation parameter --- p.42 / Chapter 5.2.2 --- Perturbation-dependent boundary condition --- p.43 / Chapter 5.2.3 --- The first order perturbation --- p.44 / Chapter 5.2.4 --- The second order perturbation --- p.48 / Chapter 6 --- Cubic-Quintic Model of Neutron Stars --- p.53 / Chapter 6.1 --- Cubic-Quintic Model (CQM) --- p.53 / Chapter 6.2 --- The fluid functions --- p.54 / Chapter 6.3 --- The metric coefficients --- p.56 / Chapter 6.4 --- The tortoise radius R* --- p.58 / Chapter 6.5 --- The QNM frequencies --- p.60 / Chapter 7 --- The Chain of Approximations --- p.63 / Chapter 8 --- Inversion of QNMs --- p.72 / Chapter 8.1 --- The modified SCLPT --- p.72 / Chapter 8.2 --- The Inverting Scheme --- p.76 / Chapter 8.3 --- Application of the Inverting Scheme --- p.79 / Chapter 8.4 --- Improved Inverting Scheme --- p.80 / Chapter 9 --- Conclusion --- p.87 / Chapter 9.1 --- Summary of Our Work --- p.87 / Chapter 9.2 --- Outlook --- p.88 / Chapter A --- Linear and Quadratic Models --- p.90 / Chapter A.1 --- Linear Model (LM): Mass oc r --- p.90 / Chapter A.2 --- Quadratic Model (QM): Mass oc r2 --- p.93 / Chapter B --- The relationship between R* and the mass distribution --- p.96 / Bibliography --- p.98

Wu Jun = 中子星的極性w-模振盪 / 吳俊. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2005. / Includes bibliographical references (leaves 100-102). / Text in English; abstracts in English and Chinese. / Wu Jun = Zhong zi xing de ji xing w-mo zhen dang / Wu Jun. / Abstract --- p.i / Acknowledgement --- p.iii / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Background introduction and historical review --- p.1 / Chapter 1.2 --- Outline of the thesis --- p.3 / Chapter 1.3 --- Notations and conventions --- p.4 / Chapter 2 --- Equilibrium and oscillations of Relativistic stars --- p.5 / Chapter 2.1 --- Relativistic stars --- p.5 / Chapter 2.1.1 --- Equilibrium configuration --- p.6 / Chapter 2.1.2 --- Equation of state --- p.7 / Chapter 2.2 --- Oscillations of relativistic stars --- p.9 / Chapter 2.2.1 --- Families of fluid modes --- p.10 / Chapter 2.2.2 --- Families of spacetime modes (w-mode) --- p.11 / Chapter 3 --- Polar oscillations of neutron stars --- p.14 / Chapter 3.1 --- Axial oscillations of neutron stars --- p.14 / Chapter 3.2 --- LD formulation --- p.16 / Chapter 3.2.1 --- Equations inside star --- p.17 / Chapter 3.2.2 --- Boundary conditions at r = 0 and r = R --- p.19 / Chapter 3.2.3 --- Perturbations outside star --- p.21 / Chapter 3.3 --- AAKS formulation --- p.22 / Chapter 3.3.1 --- Equations inside the star --- p.23 / Chapter 3.3.2 --- Behavior at the center and the stellar surface --- p.25 / Chapter 3.3.3 --- Evolution outside star --- p.28 / Chapter 3.3.4 --- Connection formula --- p.29 / Chapter 4 --- QNMs of polar oscillations --- p.31 / Chapter 4.1 --- Solution outside star --- p.31 / Chapter 4.2 --- LD approach --- p.32 / Chapter 4.3 --- Hamiltonian constraint --- p.33 / Chapter 4.4 --- Boundary conditions a.t r = R --- p.37 / Chapter 4.5 --- Direct integration scheme (DIS) --- p.42 / Chapter 4.6 --- Two-way integration scheme (TIS) --- p.43 / Chapter 4.7 --- Connect the interior and exterior solutions --- p.45 / Chapter 4.8 --- Numerical results --- p.46 / Chapter 5 --- Polar oscillations without fluid motions --- p.50 / Chapter 5.1 --- Zero pressure variation approximation (ZPVA) --- p.51 / Chapter 5.1.1 --- Evolution formulas --- p.51 / Chapter 5.1.2 --- Boundary conditions --- p.53 / Chapter 5.1.3 --- Approximate QNMs --- p.55 / Chapter 5.2 --- Zero density variation approximation (ZDVA) --- p.55 / Chapter 5.2.1 --- Single equation formulas --- p.58 / Chapter 5.2.2 --- Numerical results --- p.61 / Chapter 5.2.3 --- Summary --- p.62 / Chapter 5.3 --- Application of ZDVA --- p.65 / Chapter 5.3.1 --- Relation between axial and polar w-modes --- p.65 / Chapter 5.3.2 --- Analysis --- p.66 / Chapter 6 --- Universal behavior of polar QNMs --- p.69 / Chapter 6.1 --- Universal behavior of polar w-modes --- p.70 / Chapter 6.2 --- Ordinary CQM of neutron stars --- p.71 / Chapter 6.2.1 --- TOV parameters of a CQM star --- p.71 / Chapter 6.2.2 --- Stability problem of CQM --- p.73 / Chapter 6.2.3 --- EOS near the surface --- p.75 / Chapter 6.3 --- Scaling behavior of polar oscillations --- p.78 / Chapter 6.3.1 --- Scaling behavior of fluid motions --- p.79 / Chapter 6.3.2 --- Scaled wave equations --- p.80 / Chapter 6.4 --- Scaled Cubic-Quintic Model (SCQM) --- p.82 / Chapter 7 --- Conclusion --- p.85 / Chapter 7.1 --- Summary of Our Work --- p.85 / Chapter 7.2 --- Outlook --- p.86 / Chapter A --- Expansion of Hamiltonian constraint around the center --- p.88 / Chapter B --- Factorization integration scheme (FIS) --- p.92 / Chapter C --- Equivalence of two definitions of the Zerilli function --- p.96

Thesis (Ph. D.)--University of Hong Kong, 2001. / Includes bibliographical references (leaves 113-122).