Search for dissertations about: "Binaries: close"
Showing result 1 - 5 of 7 swedish dissertations containing the words Binaries: close.
-
1. Theoretical Studies of Binaries in Astrophysics
Abstract : This thesis introduces and summarizes four papers dealing with computer simulations of astrophysical processes involving binaries. The first part gives the rational and theoretical background to these papers. In paper I and II a statistical approach to studying eclipsing binaries is described. READ MORE
-
2. X-ray variability in Galactic high-mass black hole binaries
Abstract : The stars of the night sky can to the naked eye appear to be steady and unchanging, apart from the twinkling created by air moving in the atmosphere. However, when viewed in X-rays, the sky is far from constant, with detectable changes occurring on very short timescales.Black hole X-ray binaries are strong sources of X-rays. READ MORE
-
3. Studies of the S-type AGB star W Aquilae : The circumstellar envelope and the fain companion
Abstract : Low- and intermediate-mass stars will all eventually enter the asymptotic giant branch (AGB) phase. AGB stars experience intense mass-loss, generating a significant fraction of the dust and molecular matter that enrichesthe ISM. AGB stars are also responsible for a the production of about half of all elements heavier than iron. READ MORE
-
4. Studies of Gas Disks in Binary Systems
Abstract : There are over 300 exoplanets detected through radial velocity surveys and photometric studies showing a tremendous variety of masses, compositions and orbital parameters. Understanding the way these planets formed and evolved within the circumstellar disks they were initially embedded in is a crucial issue. READ MORE
-
5. Optical and Electronic Properties of WO3 and Zn Chalcogenides Alloys: A Theoretical study
Abstract : I denna avhandling analyseras optiska och elektroniska egenskaper hos WO3 och Zn-relaterade legeringar med hjälp av täthetsfunktionalteori (DFT). Metoder som går utöver DFT, såsom GW-approximationen och hybridfunktionaler, används för att minimera det fel som genereras av det smala bandgapet som erhålls med konventionella DFT-funktionaler. READ MORE