Off-source Fluctuation Analysis of the Chandra Deep Fields

Details Off-source Fluctuation Analysis of the Chandra Deep Fields Off-source Fluctuation Analysis of the Chandra Deep Fields

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001tysc.confe..77m&link_type=abstract

Two Years of Science with Chandra, Abstracts from the Symposium held in Washington, DC, 5-7 September, 2001, meeting abstract.

Computer Science

Extragalactic Diffuse Emission And Surveys

Scientific paper

The distribution of counts-in-cells in the source-excluded regions contains information on source number counts fainter than the resolved sources. This ``fluctuation analysis'' has been successfully applied to the deep surveys of previous missions in extending the Log N-Log S relation to fainter fluxes. We have applied this method to the two publicly archived Chandra Deep Fields, i.e., the Hubble Deep Field North (HDF-N) and Chandra Deep Field South (CDF-S). The distributions of counts-in-cells in the source-excluded Chandra ACIS-I images in the 0.5-2 keV and 2-8 keV bands have been compared with those expected from flux-distribution (Log N-Log S) models using simulations including non-uniformity of exposure over the field of view (FOV) and off-axis angle-dependent point-spread function (PSF).

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