Abstract We use Cloudy photoionisation models to predict the flux profiles for optical/IR emission lines that trace footprint of X-ray gas, such as [Fe X] 6375Å and [Si 1.43μm. These are a subset coronal lines, from ions with ionisation potential ≥ O VII, i.e., 138eV. The formed in gas over same range state H He-like Ne ions, which also source lines. can be detected optical IR telescopes, Hubbl...

Most baryonic matter in the universe exists gaseous form and can be found structures such as galactic halos low-density intergalactic medium. proposed-ray spectroscopy missions Athena, Arcus, Lynx will have capability to identify absorption lines spectra toward bright active nuclei (AGNs), which used a tool probe this missing matter. In study, we examine optical fields surrounding 15 primary ob...

background: panoramic imaging is one of the most common imaging methods in dentistry. regarding the side-effects of ionizing radiation, it is necessary to survey different aspects and details of panoramic imaging. in this study, we compared the absorbed x-ray dose around two panoramic x-ray units: pm 2002 cc proline (planmeca, helsinki, finland) and cranex tome (soredex, helsinki, finland). mat...