- About
-
The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 21 to 30 of 110 (0.012 seconds)| 21 |
The structure and heating of the outer atmospheres of late-type starsSim, Stuart A. January 2002 (has links)
No description available.
|
| 22 |
Slow mergers of massive starsIvanova, Natalʹi͡a January 2002 (has links)
No description available.
|
| 23 |
The cosmic microwave background power spectrumGriffiths, Louise M. January 2002 (has links)
No description available.
|
| 24 |
Singularities and nonperturbative string vacua with N=1 supersymmetryFlorea, B. January 2002 (has links)
No description available.
|
| 25 |
Studies of scintillators for the CRESST dark matter searchKeeling, Robert Owen January 2002 (has links)
No description available.
|
| 26 |
Coronal emission from late-type stars : a ROSAT and XMM viewBriggs, Kevin January 2002 (has links)
In Chapter I, I introduce the framework of observational and theoretical evidence that has been constructed to understand the vast range of X-ray characteristics exhibited by late-type stars on the basis of the magnetic dynamo that is thought to power the Sun's own modest X-ray activity, and describe the spectral analysis techniques and X-ray instruments used in this work. In Chapter 2 I present a catalogue-based classification of X-ray sources detected in the ROSAT PSPC Galactic Plane Survey in the Third Quadrant (3QGPS) and use the results to infer a denser spatial distribution of young, X-ray active stars in the local Galaxy than has been traditionally assumed. In Chapter 3 I exploit the high coronal activity of young stars to search for unrecognised members of the Hyades-age open clusters NGC 6633 and IC 4756 in deep ROSAT HRI images, and make a novel comparison of the X-ray activity levels of these clusters with that of the Hyades. In Chapter 4 I explore the X-ray emission from very low mass stars in an XMM-Newton EPIC pointing in the Pleides, finding marginal support for a decline in X-ray activity for stars with spectral types later than " M4 that may be a signature of the changeover to a non-solar-like dynamo in fully-convective stars. I also undertake spectral and variability studies of the X-ray-bright members in the field, and present evidence that the detection of early-type stars in the cluster are fully consistent with emission from late-type companions. In Chapter 5 I perform a time-resolved spectroscopic study of the nearby active K0 star AB Dor using the XMM-Newton EPIC pn, with comparison to a study using the higher-resolution XMM-Newton RGS, investigating the temperature structure and elemental adundance changes during the course of a moderate flare.
|
| 27 |
Studies of x-ray clusters in cosmological simulationsMuanwong, Orrarujee January 2002 (has links)
No description available.
|
| 28 |
An integrated mineralogical, petrologic and isotopic study of ureilitesSmith, Caroline Louise January 2002 (has links)
No description available.
|
| 29 |
Precision inflationary perturbations and cosmic microwave background constraintsLeach, Samuel January 2002 (has links)
No description available.
|
| 30 |
Dynamic activity in the outer atmospheres of late-type stars including the sunGarcia-Alvarez, D. January 2003 (has links)
No description available.
|
Page generated in 0.0422 seconds