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Full-Text Articles in Physical Sciences and Mathematics
On The Time Variation Of Dust Extinction And Gas Absorption For Type Ia Supernovae Observed Through A Nonuniform Interstellar Medium, Xiaosheng Huang, G Aldering, M. Biederman, B. Herger
On The Time Variation Of Dust Extinction And Gas Absorption For Type Ia Supernovae Observed Through A Nonuniform Interstellar Medium, Xiaosheng Huang, G Aldering, M. Biederman, B. Herger
Physics and Astronomy
For Type Ia supernovae (SNe Ia) observed through a nonuniform interstellar medium (ISM) in its host galaxy, we investigate whether the nonuniformity can cause observable time variations in dust extinction and in gas absorption due to the expansion of the SN photosphere with time. We show that, owing to the steep spectral index of the ISM density power spectrum, sizable density fluctuation amplitudes at the length scale of typical ISM structures () will translate to much smaller fluctuations on the scales of an SN photosphere. Therefore, the typical amplitude of time variation due to a nonuniform ISM, of absorption equivalent …
Book Review: Chandra's Cosmos: Dark Matter, Black Holes, And Other Wonders Revealed By Nasa's Premier X-Ray Observatory, T. D. Oswalt
Book Review: Chandra's Cosmos: Dark Matter, Black Holes, And Other Wonders Revealed By Nasa's Premier X-Ray Observatory, T. D. Oswalt
Publications
This document is Dr. Oswalt’s review of Chandra's cosmos: dark matter, black holes, and other wonders revealed by NASA's premier X-ray observatory by Wallace H. Tucker. Smithsonian Books, 2017. 266p bibl index ISBN 9781588345875, $29.95; ISBN 9781588345882 ebook, contact publiser for price.
Accuracy And Stability Of Integration Methods For Neutrino Transport In Core Collapse Supernovae, Kyle A. Gregory
Accuracy And Stability Of Integration Methods For Neutrino Transport In Core Collapse Supernovae, Kyle A. Gregory
Chancellor’s Honors Program Projects
No abstract provided.
Time-Dependent Spectropolarimetric Modeling Of Interacting Core Collapse Supernovae, Leah N. Huk
Time-Dependent Spectropolarimetric Modeling Of Interacting Core Collapse Supernovae, Leah N. Huk
Electronic Theses and Dissertations
Explosive deaths of massive stars in core collapse supernovae are rare events that are only observed with any frequency at large intergalactic distances. This makes identification of progenitors difficult and massive star evolution a challenge to pin down. This dissertation addresses the question of how the properties of the circumstellar environment around supernovae can be used to identify progenitors via their mass loss history. Massive stars all lose mass through a variety of mechanisms that are characteristic of their mass, age, and binarity. This gives rise to a wide range of circumstellar environments which with supernovae may interact, producing multi-component …