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Full-Text Articles in Physical Sciences and Mathematics

An Investigation Of The Origin The Bimodal Distribution Of Optical Afterglow Luminosities Of Gamma-Ray Bursts, Tesla Birnbaum, Bing Zhang Aug 2008

An Investigation Of The Origin The Bimodal Distribution Of Optical Afterglow Luminosities Of Gamma-Ray Bursts, Tesla Birnbaum, Bing Zhang

Undergraduate Research Opportunities Program (UROP)

The determination of which properties of gamma-ray bursts and the surrounding interstellar medium contribute to the observed bimodal distribution of optical afterglow luminosities will provide insight into the physical processes that give rise to the two families of optical afterglows. Making this determination will require a solid understanding of the standard afterglow model, as well as the use of a language such as C to create programs consisting of codes that perform calculations involving afterglow parameters and Monte Carlo simulations.

Gamma-ray bursts (GRBs): the brightest sources of electromagnetic radiation since the Big Bang; also the most violent explosions in the …


Stereospecificity In Glucose Consumption: A New Approach To Martian Life Detection, Vienna R. Saccomanno, Henry J. Sun Aug 2008

Stereospecificity In Glucose Consumption: A New Approach To Martian Life Detection, Vienna R. Saccomanno, Henry J. Sun

Undergraduate Research Opportunities Program (UROP)

In 1976, the Viking mission made a remarkable discovery: Martian soil was capable of decomposing an organic nutrient broth to carbon dioxide as if it contained live microorganisms. However, a biological interpretation of this finding is in apparent contradiction with the gas chromatograph-mass spectrometer aboard the Viking landers, which showed Martian soil to be devoid of indigenous organics. To reconcile these findings, it has been hypothesized that unknown abiotic oxidants, such as peroxide and superoxide, are present on Mars and that they were responsible for its soil reactivity. The objective of this research is to develop a life detection method …