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Neutrinos and their flavor mixing in nuclear astrophysics  [PDF]
Sandhya Choubey
Physics , 2001,
Abstract: In this thesis we explore the implications of neutrino oscillations in the context of the solar neutrino data, the atmospheric neutrino data and results from the terrestrial accelerator/reactor neutrino oscillation experiments. We perform comprehensive $\chi^2$ analysis for the global solar neutrino data including SNO and present our results for two flavor $\nu_e-\nu_{active}$ and $\nu_e-\nu_{sterile}$ oscillations. We explore the apparent conflict between the flat SK spectrum and the non-monotonic energy dependence of the solar neutrino survival probability inferred from the global data on total rates. We analyze the SK atmospheric neutrino data in the framework of two and three generations. For the three-generation analysis we simultaneously take into account the results of the terrestrial neutrino experiments. We consider the possibility of unstable neutrinos and explore the viability of this decay model as a solution to the atmospheric neutrino anomaly. We make quantitative predictions for the number of events recorded in the water Cerenkov detectors due a galactic supernova and examine the signatures of neutrino mass and mixing in the resultant neutrino signal.
Neutrinos, Rare Isotopes of Exotic Nuclei and Nuclear Astrophysics  [PDF]
A. B. Balantekin
Physics , 2014, DOI: 10.1088/1742-6596/590/1/012001
Abstract: The connection between neutrino physics, nucleosynthesis of elements in astrophysical sites, laboratory measurements with rare exotic nuclei and astronomical observations is discussed. The key role played by neutrinos is emphasized and the close connection between neutrino physics and nucleosynthesis is highlighted.
Neutrinos in Cosmology and Astrophysics  [PDF]
A. B. Balantekin,G. M. Fuller
Physics , 2013, DOI: 10.1016/j.ppnp.2013.03.008
Abstract: We briefly review the recent developments in neutrino physics and astrophysics which have import for frontline research in nuclear physics. These developments, we argue, tie nuclear physics to exciting developments in observational cosmology and astrophysics in new ways. Moreover, the behavior of neutrinos in dense matter is itself a fundamental problem in many-body quantum mechanics, in some ways akin to well-known issues in nuclear matter and nuclei, and in some ways radically different, especially because of nonlinearity and quantum de-coherence. The self-interacting neutrino gas is the only many body system driven by the weak interactions.
Nuclear Astrophysics: CIPANP 2006  [PDF]
W. C. Haxton
Physics , 2006, DOI: 10.1063/1.2402595
Abstract: I review progress that has been made in nuclear astrophysics over the past few years and summarize some of the questions that remain. Topics selected include solar neutrinos, supernovae (the explosion and associated nucleosynthesis), laboratory astrophysics, and neutron star structure.
Nuclear Astrophysics  [PDF]
M. Arnould,K. Takahashi
Physics , 1998, DOI: 10.1088/0034-4885/62/3/003
Abstract: Nuclear astrophysics is that branch of astrophysics which helps understanding some of the many facets of the Universe through the knowledge of the microcosm of the atomic nucleus. In the last decades much advance has been made in nuclear astrophysics thanks to the sometimes spectacular progress in the modelling of the structure and evolution of the stars, in the quality and diversity of the astronomical observations, as well as in the experimental and theoretical understanding of the atomic nucleus and of its spontaneous or induced transformations. Developments in other sub-fields of physics and chemistry have also contributed to that advance. Many long-standing problems remain to be solved, however, and the theoretical understanding of a large variety of observational facts needs to be put on safer grounds. In addition, new questions are continuously emerging, and new facts endanger old ideas. This review shows that astrophysics has been, and still is, highly demanding to nuclear physics in both its experimental and theoretical components. On top of the fact that large varieties of nuclei have to be dealt with, these nuclei are immersed in highly unusual environments which may have a significant impact on their static properties, the diversity of their transmutation modes, and on the probabilities of these modes. In order to have a chance of solving some of the problems nuclear astrophysics is facing, the astrophysicists and nuclear physicists are obviously bound to put their competence in common, and have sometimes to benefit from the help of other fields of physics, like particle physics, plasma physics or solid-state physics.
Neutrinos in physics, astrophysics, and cosmology  [PDF]
A. D. Dolgov
Physics , 2000,
Abstract: A brief review of neutrino anomalies in particle physics and of the role played by neutrinos in cosmology and astrophysics is presented. The main part of the talk is dedicated to the impact of neutrinos and in particular of neutrino oscillations on BBN and to a possible spatial variation of primordial abundances.
Neutrinos in physics and astrophysics  [PDF]
Esteban Roulet
Physics , 1999,
Abstract: An elementary general overview of the neutrino physics and astrophysics is given. We start by a historical account of the development of our understanding of neutrinos and how they helped to unravel the structure of the Standard Model. We discuss why it is so important to establish if neutrinos are massive and we introduce the main scenarios to provide them a mass. The present bounds and the positive indications in favor of non-zero neutrino masses are discussed as well as the major role they play in astrophysics and cosmology.
Massive Neutrinos in Astrophysics  [PDF]
G. G. Raffelt,W. Rodejohann
Physics , 1999,
Abstract: An introduction to various topics in neutrino astrophysics is given for students with little prior exposure to this field. We explain neutrino production and propagation in stars, neutrino oscillations, and experimental searches for this effect. We also touch upon the cosmological role of neutrinos. A number of exercises is also included.
Summary of Nuclear and Particle Astrophysics Sessions  [PDF]
R. Jeffrey Wilkes
Physics , 1994, DOI: 10.1063/1.48454
Abstract: Astrophysics is gaining increased attention from the particle and nuclear physics communities, as budget cuts, delays, and cancellations limit opportunities for breakthrough research at accelerator laboratories. Observations of cosmic rays (protons and nuclei), gamma rays and neutrinos present a variety of puzzles whose eventual solution will shed light on many issues ranging from the nature of fundamental interactions at extreme energies to the mechanisms of astrophysical sources. Several important detectors are just beginning full-scale operation and others are beginning construction.
Nuclear Problems in Astrophysics  [PDF]
W. C. Haxton
Physics , 2003,
Abstract: These lectures, presented at the International School of Physics ``Enrico Fermi,'' deal with two major themes. The first is the remarkable story of the solar neutrino problem, which (along with the atmospheric neutrino anomaly) recently led to the discovery of massive neutrinos and neutrino oscillations, physics beyond the standard model. I will describe the physics of the standard solar model (SSM), the experimental program that was motivated by the discrepancies between SSM predictions and the initial observations of Raymond Davis, Jr., and his colleagues, and the recent results of SNO and SuperKamiokande. These first lectures end with a description of what we have learned about neutrino oscillations and the neutrino mass matrix, as well as the open questions (neutrino charge conjugation properties, the absolute mass scale, CP violation) that could ultimately impact our understanding of baryogenesis, the origin of large-scale structure, and other topics in cosmology and astrophysics. The second theme is the core-collapse supernova mechanism and associated nucleosynthesis. This problem connects neutrino physics, which controls much of the nuclear physics of the star, with the long-term chemical evolution of our galaxy. In particular, the $r$-process, which produces about half of the heavy elements, remains poorly understood, despite important new constraints from studies of metal-poor halo stars. The possible role of new neutrino properties on both the explosion mechanism and nucleosynthesis is noted.
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