자료유형  

 학위논문

Control Number  

0016935600

International Standard Book Number  

9798380371742

Dewey Decimal Classification Number  

520

Main Entry-Personal Name  

Beltz, Hayley.

Publication, Distribution, etc. (Imprint  

[S.l.] : University of Michigan., 2023

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2023

Physical Description  

1 online resource(202 p.)

General Note  

Source: Dissertations Abstracts International, Volume: 85-03, Section: B.

General Note  

Advisor: Rauscher, Emily.

Dissertation Note  

Thesis (Ph.D.)--University of Michigan, 2023.

Restrictions on Access Note  

This item must not be sold to any third party vendors.

Restrictions on Access Note  

This item must not be added to any third party search indexes.

Summary, Etc.  

요약With orbital periods of only a few days, hot Jupiters and the even hotter ultrahot Jupiters are classes of planets that exist in an irradiation regime unlike anything in our solar system. These atmospheres are drastically influenced by the extreme levels of irradiation from their host star. Due to their proximity, these planets are expected to become tidally locked into synchronous orbits, meaning that their rotation period and orbital period are equal. This results in a permanent dayside and nightside on the planets, causing the large scale atmospheric dynamics of these objects to be governed by heat redistribution. In addition, these extreme temperatures cause atmospheric species to ionize on planet daysides, which can contribute to the lack of uniformity in the spatial distribution of species in these planets' atmospheres. The movement of these ions also opens the door to interactions with the planet's magnetic field. Very little is known about how magnetic effects can shape the atmospheres of these planets. In order to understand these planets more thoroughly, I use two main tools: 3D numerical modeling and high resolution spectroscopy. In this thesis, I explore multiple numerical treatments of magnetic effects, highlighting the strengths and weaknesses of each. Using our model's state-of-the-art kinematic magneto-hydrodynamic (MHD) approach, I characterize a magnetic circulation regime that manifests in the upper atmosphere of ultrahot Jupiters as a result of our magnetic drag treatment. I also dive into the observational signatures of this regime, reviewing the effects on phase curves, emission, and transmission spectroscopy. Too often are magnetic effects ignored in analyses and models, and this thesis works to emphasize the importance of these effects.

Subject Added Entry-Topical Term  

Astronomy.

Subject Added Entry-Topical Term  

Atmospheric sciences.

Subject Added Entry-Topical Term  

Astrophysics.

Subject Added Entry-Topical Term  

Planetology.

Index Term-Uncontrolled  

Exoplanet atmospheres

Index Term-Uncontrolled  

Ultrahot Jupiters

Index Term-Uncontrolled  

Orbital periods

Index Term-Uncontrolled  

Host star

Index Term-Uncontrolled  

Magnetic effects

Added Entry-Corporate Name  

University of Michigan Astronomy and Astrophysics

Host Item Entry  

Dissertations Abstracts International. 85-03B.

Host Item Entry  

Dissertation Abstract International

Electronic Location and Access  

로그인을 한후 보실 수 있는 자료입니다.

Control Number  

joongbu:640589