The NuSTAR Extragalactic Surveys:Source Catalogs From The Extended Chandra Deep Field-South And The Chandra Deep Field-North

Extragalactic X-ray surveys have greatly enhanced our understanding of cosmic X-ray background(CXRB)and active galactic nuclei(AGNs).Because most of the previous X-ray space telescopes are only sensitive to the X-ray energy band below 10 keV,the research on the peak(about 20-40 keV)of the CXRB has been greatly limited.The Nuclear Spectroscopic Telescope Array(NuSTAR)launched in 2012 has broadened the window of X-ray observations.Its high-precision observations above 10 keV can help people better understand the contribution of highly obscured AGNs to the CXRB.The Chandra Deep Fields(CDFs)are important sky areas for studying AGN demography,physics,evolution,etc.Therefore,NuSTAR also observed the CDFs.In view of the fact that the NuSTAR CDF-North(CDF-N)catalog is still vacant,we put forward a uniform and reliable method to obtain both the NuSTAR CDF-N and Extended CDF-South(E-CDF-S)source catalogs by referring to the previous NuSTAR E-CDF-S cataloging work.We verify the reliability of our two catalogs by comparing them with the relevant catalogs from the Chandra X-ray observatory.Our catalogs provide a good platform for further studies of CXRB,highly obscured AGNs,etc.