X-ray Spectral Properties of the BAT AGN Sample Export

@article{citeulike:3107385, abstract = {The 9-month Swift Burst Alert Telescope (BAT) catalog provides the first unbiased (log N\_H \< 24) look at local (\<z\> = 0.03) AGN. In this paper, we present the collected X-ray properties (0.3 - 12keV) for the 153 AGN detected. In addition, we examine the X-ray properties for a complete sample of non-beamed sources, above the Galactic plane. Of these, 45\% are best fit by simple power law models while 55\% require the more complex partial covering model. One of our goals was to determine the fraction of "hidden" AGN, which we define as sources with scattering fractions \< 0.03 and ratios of soft to hard X-ray flux \< 0.04. We found that "hidden" AGN constitute a high percentage of the sample (24\%), proving that they are a very significant portion of local AGN. Further, we find that the fraction of absorbed sources does increase at lower unabsorbed 2-10 keV luminosities, as well as accretion rates. Some of the most interesting results for the BAT AGN sample involve the host galaxy properties. We found that 33\% are hosted in peculiar/irregular galaxies and only 5/74 hosted in ellipticals. Further, 54\% are hosted in interacting/merger galaxies. Finally, we present both the average X-ray spectrum (0.1-10 keV) and log N-log S in the 2-10 keV band. With our average spectrum, we have the remarkable result of reproducing the measured CXB X-ray power law slope of \~{} 1.4 (Marshall et al. 1980). From the log N-log S relationship, we show that we are complete to log S \< -11 in the 2-10 keV band. Both the collected X-ray properties of our uniform sample and the log N-log S relationship will now provide valuable input to X-ray background models for z \~{} 0. (abridged)}, archivePrefix = {arXiv}, author = {Winter, L. M. and Mushotzky, R. and Reynolds, C. S. and Tueller, J.}, citeulike-article-id = {3107385}, citeulike-linkout-0 = {http://arxiv.org/abs/0808.0461}, citeulike-linkout-1 = {http://arxiv.org/pdf/0808.0461}, day = {4}, eprint = {0808.0461}, keywords = {agn, bat}, month = {Aug}, posted-at = {2008-11-11 18:45:12}, priority = {2}, title = {X-ray Spectral Properties of the BAT AGN Sample}, url = {http://arxiv.org/abs/0808.0461}, year = {2008} }

TY - JOUR ID - citeulike:3107385 L3 - citeulike-article-id:3107385 N2 - The 9-month Swift Burst Alert Telescope (BAT) catalog provides the first unbiased (log N_H < 24) look at local (<z> = 0.03) AGN. In this paper, we present the collected X-ray properties (0.3 - 12keV) for the 153 AGN detected. In addition, we examine the X-ray properties for a complete sample of non-beamed sources, above the Galactic plane. Of these, 45% are best fit by simple power law models while 55% require the more complex partial covering model. One of our goals was to determine the fraction of "hidden" AGN, which we define as sources with scattering fractions < 0.03 and ratios of soft to hard X-ray flux < 0.04. We found that "hidden" AGN constitute a high percentage of the sample (24%), proving that they are a very significant portion of local AGN. Further, we find that the fraction of absorbed sources does increase at lower unabsorbed 2-10 keV luminosities, as well as accretion rates. Some of the most interesting results for the BAT AGN sample involve the host galaxy properties. We found that 33% are hosted in peculiar/irregular galaxies and only 5/74 hosted in ellipticals. Further, 54% are hosted in interacting/merger galaxies. Finally, we present both the average X-ray spectrum (0.1-10 keV) and log N-log S in the 2-10 keV band. With our average spectrum, we have the remarkable result of reproducing the measured CXB X-ray power law slope of ~ 1.4 (Marshall et al. 1980). From the log N-log S relationship, we show that we are complete to log S < -11 in the 2-10 keV band. Both the collected X-ray properties of our uniform sample and the log N-log S relationship will now provide valuable input to X-ray background models for z ~ 0. (abridged) TI - X-ray Spectral Properties of the BAT AGN Sample KW - agn KW - bat AU - Winter, LM AU - Mushotzky, R AU - Reynolds, CS AU - Tueller, J PY - 2008/Aug/04/ UR - http://arxiv.org/abs/0808.0461 ER -