The Cosmic X-ray Background at the Peak of its Emission: An Accurate Measurement with BeppoSAX and its Consequences

Details The Cosmic X-ray Background at the Peak of its Emission: An Accurate Measurement with BeppoSAX and its Consequences The Cosmic X-ray Background at the Peak of its Emission: An Accurate Measurement with BeppoSAX and its Consequences

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008chjas...8..297f&link_type=abstract

Chinese Journal of Astronomy & Astrophysics Supplement, Vol. 8, p. 297-301

Astronomy and Astrophysics

Astrophysics

1

X-Rays: Diffuse Background, Cosmology: Diffuse Radiation, Cosmology: Observations

Scientific paper

We discuss an accurate measurement of the CXB in the 15-50 keV range performed with the Phoswich Detection System (PDS) instrument aboard the BeppoSAX satellite, whose results have already been recently reported elsewhere te{Frontera07}. After the recently reported 2-10 keV CXB measurements obtained with the imaging instruments aboard the X-ray satellites BeppoSAX, XMM-Newton, and Chandra that give CXB intensities systematically higher than those obtained with HEAO-1 in the same energy band, suspects of systematic errors in the HEAO-1 measurements at low and higher energies have been raised by several authors. Using the BeppoSAX PDS pointings at high galactic latitude (|b|>15°) we have measured the CXB spectrum and intensity level in the 15-50 keV energy band. Our results are consistent with those obtained with HEAO-1 at the same energies. Astrophysical consequences are discussed.

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