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Showing 1 to 7 of 7 for “"x-ray background"”.

  1. X-ray CCDs for space applications : calibration, radiation hardness, and use for measuring the spectrum of the cosmic X-ray background

    Gendreau, Keith CharlesMassachusetts Institute of Technology1995

    Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1995.

    mit Repository record

  2. X-ray and optical properties of X-ray luminous active galactic nuclei

    Krumpe, MirkoUniversität Potsdam

    … 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 …

    potsdam-diss Repository record

  3. The evolution of galaxies and AGN

    Hill, Michael DavidDurham University2010

    … being much weaker sub-mm emitters. Overall, X-ray-detected AGN contribute 1.5+/-0.1 Jy deg^−2 to the sub-mm background, ~3% of the total, in agreement with the prediction of an AGN model which also fits the bright sub-mm counts. When Compton-thick, X-ray-undetected sources are included, this …

    durham Repository record

  4. A high energy perspective of the co-evolution of black holes and their host galaxies

    Civano, Francesca Maria <1979>Alma Mater Studiorum - Università di Bologna2007

    … the Chandra and XMM–Newton surveys, the hard X-ray sky is now probed down to a flux limit where the bulk of the X-ray background is almost completely resolved into discrete sources, at least in the 2–8 keV band. Extensive programs of multiwavelength follow-up observations showed that the large …

    bologna Repository record

  5. Probing the First Stars with the 21-cm Signal: Theory, Methods, and Forecasts

    Gessey-Jones, ThomasUniversity of Cambridge2024

    … feedback. Chapter 4 investigates how cosmic rays emitted via the supernovae of the first stars can heat the intergalactic medium and imprint distinctive signatures on the 21-cm signal. And finally, Chapter 5 shows that variations in X-ray binary emissivity and abundances enhance the …

    cambridge Repository record

  6. Broad-band spectral analysis of a complete sample of type 1 AGN detected by INTEGRAL

    Molina, ManuelaUniversity of Southampton2009

    … from the 3rd IBIS/ISGRI catalogue. Archival X-ray data taken from several observatories, such as XMM-Newton, Chandra, Swift/XRT and ASCA, have been combined together with IBIS spectra, providing for the first time a broad-band spectral analysis of a hard X-ray detected complete sample of type 1 …

    soton Repository record

  7. Nano-engineering of composite material via reactive mechanical alloying/milling (RMA/M)

    Laitila, Edward Andrew

    mtu Repository record