Components of cosmic background radiation and their interaction with matter

Thesis/Dissertation · Sun Jan 01 04:00:00 EST 1989

OSTI ID:6285447

Wang, Boqi

Two competing theories proposed to explain the newly observed background radiation at submillimeter wavelengths-emission of dust and radiative decay by weakly interacting particles are explored, emphasizing their possible implications on formation of structures in the early universe. It was discovered that the radiative instability resulting from interaction between dust and radiation cannot grow significantly to form galaxies and large-scale structures. Decaying particle models were shown to explain both the submillimeter background and the recently observed isotropic infrared background radiation at 1 to 5 microns. In addition, non-uniform distribution of decaying particles prior to their decay may act as sources of radiative blastwaves that could provide seeds for galaxy formation. It was shown that within the framework of decaying particle models proposed to account for both the submillimeter and infrared background, galaxy formation may occur as a result of the fragmentation of the bubbles swept up by radiation pressure originating from radiative decay.

• Research Organization: Harvard Univ., Cambridge, MA (USA)
• OSTI ID: 6285447
• Country of Publication: United States
• Language: English

Related Subjects

640101* -- Astrophysics & Cosmology-- Cosmic Radiation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BACKGROUND RADIATION
BUBBLES
COSMIC DUST
COSMIC RADIATION
COSMOLOGICAL MODELS
DATA
DECAY
DUSTS
ELECTROMAGNETIC RADIATION
GALACTIC EVOLUTION
INFORMATION
INFRARED RADIATION
INTERACTIONS
IONIZING RADIATIONS
MATHEMATICAL MODELS
NUMERICAL DATA
PARTICLE INTERACTIONS
RADIATION PRESSURE
RADIATIONS
THEORETICAL DATA