E-Dissertationen: Search
Now showing items 191-200 of 243
New Insights into the Milky Way Magnetic Fields through Radio Broadband Spectro-polarimetry
(2020-03-05)
Magnetic field is an essential ingredient of the interstellar medium of galaxies. In particular, an accurate characterisation of the magnetic field strength and structure of the Milky Way is crucial for complete understanding ...
Spectro-spatial observations of galaxy clusters with Planck and CCAT-prime
(2020-07-07)
The Sunyaev-Zeldovich (SZ) effect is a spectral distortion of the cosmic microwave background (CMB) caused by inverse Compton scattering of CMB photons by free electrons in the hot intracluster medium (ICM) of galaxy ...
Halo bias renormalisation
(2020-06-09)
Modern galaxy redshift surveys provide a wealth of information about the evolution of our Universe. They allow to measure both the two-dimensional position on the sky and the distance (given by the cosmological redshift) ...
Properties of relativistic jets in X-ray binaries
(2021-07-12)
X-ray binaries are stellar systems consisting of a compact object (either a neutron star or a black hole) accreting matter from a companion star. Some of the X-ray binaries form relativistic jets where plasma accelerates ...
Radio Continuum of Galaxies with H2O-Megamaser-Disks
(2019-11-08)
Galaxies with H2O-megamaser-disks are low luminosity active galaxies where 22GHz H2O-maser emission is detected in their accretion disk surrounding the central supermassive black hole (SMBH). Furthermore, ...
Molecular gas in hydrodynamical simulations of galaxy formation
(2022-09-26)
Observations of nearby galaxies indicate a strong correlation between their molecular gas content and their star formation rate. This leads to the conclusion that molecular hydrogen – the most abundant molecule in galaxies ...
Evolution of short-period massive binary stars in the Magellanic Clouds
(2022-10-14)
Massive stars tend to form in close binaries that will interact during their lifetime. Up to one-third of them are so close that they undergo mass transfer during hydrogen burning and yield most of the observable ...
Improved techniques for pulsar data analysis
(2021-09-29)
Pulsars are rapidly rotating, strongly magnetised neutron stars with spin periods ranging from few milliseconds to tens of seconds. They emit beams of electromagnetic radiation that are predominantly detected as periodic ...
The Transient Radio Sky: Pulsars and Fast Radio Bursts
(2021-09-17)
This thesis focuses on targeted searches of two radio transients associated with neutron stars (NS): Pulsars and Fast Radio Bursts (FRBs), and the study of their properties over different timescales. Pulsars emit beams of ...
Progenitor Stars of Hydrogen- and Helium-Deficient Astrophysical Transients
(2021-01-22)
Massive stars are among the most influential components of the Universe. They house nuclear reactions that transmute hydrogen and helium, the two elements produced with the highest abundance after the Big Bang, into heavier ...