Volume 444, Number 2, December III 2005
|Page(s)||381 - 385|
|Published online||25 November 2005|
Intensity of the cosmic X-ray backgound from HEAO1/A2 experiment
Max-Planck-Institute für Astrophysik, Karl-Schwarzschild-Str. 1, 85740 Garching bei München, Germany e-mail: email@example.com
2 Space Research Institute, Russian Academy of Sciences, Profsoyuznaya 84/32, 117810 Moscow, Russia
3 Laboratory for High Energy Astrophysics, Code 662, Goddard Space Flight Center, Greenbelt, MD 20771, USA
Accepted: 4 August 2005
We reanalyze data of HEAO1/A2 – the Cosmic X-ray Experiment – in order to repeat the measurements of the cosmic X-ray background (CXB) intensity and accurately compare this value with other measurements of the CXB. We used the data of MED, HED1, and HED3 detectors in scan mode, which allowed us to measure effective solid angles and effective areas of detectors self consistently, in the same mode as the CXB intensity was measured. We found that the average value of the CXB intensity is erg s-1 cm-2 deg-2 in the energy band 2-10 keV, or phot s-1 cm-2 at 1 keV assuming the power law spectral shape with photon index in this energy band. We compare the obtained measurements with those obtained by different instruments over the past few decades.
Key words: cosmology: observations / X-rays: general
© ESO, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.