Revealing the differences in the SMBH accretion rate distributions of starburst and non-starburst galaxies. (arXiv:1904.08406v1 [astro-ph.GA])

Revealing the differences in the SMBH accretion rate distributions of starburst and non-starburst galaxies. (arXiv:1904.08406v1 [astro-ph.GA])
<a href="http://arxiv.org/find/astro-ph/1/au:+Grimmett_L/0/1/0/all/0/1">L.P. Grimmett</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mullaney_J/0/1/0/all/0/1">J.R.Mullaney</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Jin_S/0/1/0/all/0/1">S. Jin</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bernhard_E/0/1/0/all/0/1">E. Bernhard</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Daddi_E/0/1/0/all/0/1">E. Daddi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Walters_K/0/1/0/all/0/1">K. Walters</a>

We infer and compare the specific X-ray luminosity distributions for a sample
of massive (i.e. $log_{10} (M*/Modot) > 10.5$) galaxies split according to
their far-infrared-derived star-forming properties (i.e., starburst and
non-starburst) and redshift. We model each distribution as a power-law with an
upper and lower turnover, and adopt a maximum likelihood method to include
information from non-detections in the form of upper limits. When we use our
inferred distributions to calculate the ratios of high to low sLx AGN
(corresponding to above and below $0.1lambda_{text{Edd}}$, respectively) we
find that starbursts have significantly higher proportions of high sLx AGN
compared to their non-starburst counterparts. These findings help explain the
increase in average X-ray luminosity in bins of increasing SFR reported by
previous studies.

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