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Full-Text Articles in Physical Sciences and Mathematics
Multimessenger Astronomy: Modeling Gravitational And Electromagnetic Radiation From A Stellar Binary System, Kevin Kern
Multimessenger Astronomy: Modeling Gravitational And Electromagnetic Radiation From A Stellar Binary System, Kevin Kern
Honors Theses
Our Solar System is one of roughly 100 billion other stars that make up the Milky Way Galaxy. Two-thirds of all stars are paired off, forming a gravitational bond between one another. Such systems are known as stellar binaries. Although these binaries are prevalent there is much yet to be learned about their formation, evolution, and interactions. The approach taken in this thesis is to produce simulated data representing the expected measurements that an observational astronomer would collect. Specifically, we have simulated the data from an eclipsing binary light curve, spectroscopic velocity curve, and the gravitational wave times series form …
First Mover: Otto Struve And The Use Of Scientific Capital In Astrophysics, 1921–1950, Erik Paul Norquest
First Mover: Otto Struve And The Use Of Scientific Capital In Astrophysics, 1921–1950, Erik Paul Norquest
Theses and Dissertations - UTB/UTPA
Otto Struve (1897-1963) came to the United States in 1921 and became one of the dominant personalities in the field of astrophysics. Struve’s career made him, in the words of sociologist Pierre Bourdieu, a “first mover” in a scientific field that was firmly engaged in the process of what Thomas Kuhn called “normal science.” Struve pulled astrophysics further away from its empirical roots in categorization and made it more like physics in its unification of theory and observation. The primary way that he accomplished this was through his administration of Yerkes and McDonald observatories, where he brought in theorists to …
Astronomical Spectroscopy At The Cal Poly Observatory, Christopher James Almich
Astronomical Spectroscopy At The Cal Poly Observatory, Christopher James Almich
Physics
Embarking on the first ever astronomical spectroscopy project at the Cal Poly Observatory, I have tested the capabilities of our equipment. Our spectrograph, in conjunction with a telescope and CCD camera, is capable of making fairly precise measurements of absorption and emission lines with sub-nanometer precision. In my research I obtained a spectrum of Jupiter and was able to confidently identify a number of Fraunhofer solar absorption lines.
Testing And Improving The Luminosity Relations For Gamma-Ray Bursts, Andrew Collazzi
Testing And Improving The Luminosity Relations For Gamma-Ray Bursts, Andrew Collazzi
LSU Doctoral Dissertations
Gamma Ray Bursts (GRBs) have several luminosity relations where a measurable property of a burst light curve or spectrum is correlated with the burst luminosity. These luminosity relations are calibrated for the fraction of bursts with spectroscopic redshifts and hence the known luminosities. GRBs have thus become known as a type of "standard candle"; where standard candle is meant in the usual sense that their luminosities can be derived from measurable properties of the bursts. GRBs can therefore be used for the same cosmology applications as Type Ia supernovae, including the construction of the Hubble Diagram and measuring massive star …