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Hearing and Seeing the Universe: Results from Gravitational-wave and Optical Studies of Merging Neutron Stars and Black Holes
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| 자료유형 | 학위논문 |
|---|---|
| 서명/저자사항 | Hearing and Seeing the Universe: Results from Gravitational-wave and Optical Studies of Merging Neutron Stars and Black Holes. |
| 개인저자 | Doctor, Zoheyr. |
| 단체저자명 | The University of Chicago. Physics. |
| 발행사항 | [S.l.]: The University of Chicago., 2019. |
| 발행사항 | Ann Arbor: ProQuest Dissertations & Theses, 2019. |
| 형태사항 | 162 p. |
| 기본자료 저록 | Dissertations Abstracts International 81-05B. Dissertation Abstract International |
| ISBN | 9781088394458 |
| 학위논문주기 | Thesis (Ph.D.)--The University of Chicago, 2019. |
| 일반주기 |
Source: Dissertations Abstracts International, Volume: 81-05, Section: B.
Advisor: Holz, Daniel. |
| 이용제한사항 | This item must not be sold to any third party vendors. |
| 요약 | Since the first direct detection of a gravitational wave by the Laser Interferometer Gravitational-Wave Observatory in 2015, gravitational waves have become an indispensable tool for studying extreme astrophysical phenomena. To date, eleven of these "ripples in spacetime" have been detected -- ten from merging pairs of black holes and one from two colliding neutron stars. In principle, electromagnetic and neutrino signals can be combined with gravitational-wave data to form a more complete picture of these compact object mergers. In this thesis, we present four studies of gravitational-wave and optical signatures from black-hole and neutron-star mergers. First we describe a technique for emulating expensive simulations of gravitational waveforms using Gaussian process regression, a method for non-parametrically interpolating functions and their uncertainties. The second topic we address is that of the mass ejected from the collision of the two neutron stars that produced the LIGO-Virgo gravitational wave GW170817. We find that the mass dynamically ejected from the merger should enrich its surroundings with heavy r-process elements, suggesting that neutron-star mergers could have played a significant role in the production of heavy elements we see in our solar system. Next we present the analysis and upper limits from the Dark Energy Survey of an independent optical search for kilonovae, the bright optical transients associated with neutron-star mergers. Finally, we describe Dark Energy Camera optical follow-up of black-hole merger GW170814 and the results of that search. |
| 일반주제명 | Astrophysics. Physics. |
| 언어 | 영어 |
| 바로가기 | 
: 이 자료의 원문은 한국교육학술정보원에서 제공합니다. |
