The Astrophysical Context of Life

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The Resilience of Life to Astrophysical Events | Scientific Reports

Big bang nucleosynthesis; nuclear reactions in stars; solar neutrinos and neutrino oscillations; core-collapse supernovae; nucleosynthesis in stars, novae, and supernovae; neutron starts; composition and sources of cosmic rays; gamma ray bursts; atmospheric neutrinos. Kinematics, dynamics, and contents of the galaxy. Spiral structure. Structure of other galaxies. Evolution of galaxies. Types of galaxies. Integrated properties, content, and dynamics.

Extragalactic distance scale, groups and clusters. Radio sources.


Observational cosmology. Big bang cosmology; relativistic world models and classical tests; background radiation; cosmological implications of nucleosynthesis; baryogenesis; inflation; galaxy and large-scale structure formation; quasars; intergalactic medium; dark matter. Theory and applications of astrophysical radiation processes: transfer theory; thermal radiation; theory of radiation fields and radiation from moving charges; bremsstrahlung; synchrotron; Compton scattering; plasma effects.

Physical laws governing the temperature, pressure, and mass distribution in stars. Equation of state, opacity, nuclear energy generation, computational methods. Models of main sequence stars and star formation. Theoretical and observational approaches to stellar evolution. Structure of red giants, supernovae, and white dwarfs. Observations of star clusters and the chemical composition of stars as they relate to the theory of stellar structure. Physical conditions and motions of neutral and ionized gas in interstellar space.

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Interstellar dust, magnetic fields, formation of grains, clouds, and stars. Problems of origin, evolution, and structure of planetary atmospheres, emphasizing elements common to all; roles of radiation, chemistry, and dynamical processes; new results on the atmospheres of Venus, Mars, Jupiter, and other solar system objects in the context of comparative planetology.

Comparison of surface processes and conditions on Mercury, Venus, Earth, moon, Mars, asteroids, and satellites of the great planets. Emphasis on understanding how and why planetary surfaces differ from one another and the implied course of solar-system evolution. Analysis of data from Earth-based telescopes and manned and unmanned space missions. Nebular and non-nebular theories of the solar system origin; collapse from the interstellar medium, grain growth in the solar nebula, formation of planetesimals and planets, early evolution of the planets and other possible planetary systems; physical and chemical evidence upon which the ideas concerning the origin of the solar system are based.

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Observed properties of supernovae, x-ray stars, radio sources, quasars. Theories explaining such objects. Origin of cosmic rays. Here the star sheds almost its entire original mass, becoming an ultraviolet-emitting white dwarf. These data suggest that gas-phase polyatomic, carbon-containing molecules survive the planetary nebula phase and subsequently are transported into the interstellar medium, seeding the chemistry of diffuse and then dense clouds.

The extent of the chemical complexity in dense clouds is unknown, hindered by the high spectral line density. However, organophosphorus compounds have not yet been detected in dense clouds.

Based on carbon and nitrogen isotope ratios, molecular material from the ISM appears to become incorporated into solar system planetesimals. It is therefore likely that interstellar synthesis influences prebiotic chemistry on planet surfaces.

Space Experts Discuss the Search for Life in the Universe at NASA - Public Lecture

Prebiotic Chemical Evolution in the Astrophysical Context. N2 - An ever increasing amount of molecular material is being discovered in the interstellar medium, associated with the birth and death of stars and planetary systems. Organic species such as acetamide and methyl amine are present in such objects, and NH2CHO has a wide Galactic distribution. AB - An ever increasing amount of molecular material is being discovered in the interstellar medium, associated with the birth and death of stars and planetary systems. Chemistry and Biochemistry. Link Either by signing into your account or linking your membership details before your order is placed.

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