Publication Date:
2021-03-29
Description:
Giacconi et al. (1962) discovered a diffuse cosmic X-ray background with rocket experiments when they searched for lunar X-ray emission. Later satellite missions found a spectral peak in the cosmic X-ray background at ~30 keV. Imaging X-ray satellites such as ROSAT (1990-1999) were able to resolve up to 80% of the background below 2 keV into single point sources, mainly active galaxies. The cosmic X-ray background is the integration of all accreting super-massive (several million solar masses) black holes in the centre of active galaxies over cosmic time. Synthesis models need further populations of X-ray absorbed active galaxy nuclei (AGN) in order to explain the cosmic X-ray background peak at ~30 keV. Current X-ray missions such as XMM-Newton and Chandra offer the possibility of studying these additional populations...
Description:
thesis
Keywords:
523
;
550
;
TBK 000
;
TIE 900
;
Hochenergieastronomie
;
Sonstige Sternensysteme {Astronomie}
Language:
English
Type:
monograph
,
publishedVersion
Format:
226 S.
Format:
application/pdf
