X-ray properties of galactic supernova remnants [Elektronische Ressource] / vorgelegt von Daniel Schaudel

X-ray Properties ofGalactic Supernova RemnantsDISSERTATIONder Fakultat fur Physik der Ludwig-Maximilians-Universitat Munc henzur Erlangung des GradesDoktor der NaturwissenschaftenDr. rer. nat.vorgelegt vonDANIEL SCHAUDELaus EttenheimMunc hen, den 18. Februar 20031.Gutachter: Prof. Dr. Joachim Trump er2.Gutachter: Prof. Dr. Ralf BenderTag der mundlic hen Prufung: 8. Juli 2003SummaryGalactic supernovae (SNe) are rare events, believed to occur at intervals of 30-50years. However, in the past 2000 years, only seven Galactic SNe have been observed:SN 185 (RCW86), SN 386 (G11.2-0.3), SN 1006, SN 1181 (3C58), Crab SN, Tycho SNand Kepler SN. Most Galactic SNe go unobserved because of visible-band extinctionby interstellar dust. Due to an average lifetime of supernova remnants (SNRs) of afew 10,000 to 100,000 years, about 15000 SNRs are expected in our Galaxy, whichexceeds the number of identi ed radio SNRs by almost a factor 70. These identi edGalactic SNRs comprise an incomplete sample of SNR population due to various se-lection e ects. ROSAT performed the rst all-sky survey (RASS) with an imagingX-ray telescope, providing another window for searching for SNRs.Performing a search for extended X-ray sources in the RASS database, 373 objectswere identi ed as SNR candidates in recent years (Busser 1998). One of the mainobjectives of this work was to perform an identi cation campaign of these GalacticSNR candidates.