J/ApJ/852/7ivo://CDS.VizieR/J/ApJ/852/7doi:10.26093/cds/vizier.18520007CDSCumbee R.S.Mullen P.D.Lyons D.Shelton R.L.Fogle M.Schultz D.R.,Stancil P.C.2018-11-12T08:38:16Z2018-09-12T08:26:08ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fratomic-physicsx-ray-sourcesThe fundamental collisional process of charge exchange (CX) has been established as a primary source of X-ray emission from the heliosphere, planetary exospheres, and supernova remnants. In this process, X-ray emission results from the capture of an electron by a highly charged ion from a neutral atom or molecule, to form a highly excited, high-charge state ion. As the captured electron cascades down to the lowest energy level, photons are emitted, including X-rays. To provide reliable CX-induced X-ray spectral models to realistically simulate these environments, line ratios and spectra are computed using theoretical CX cross sections obtained with the multi-channel Landau-Zener (MCLZ), atomic-orbital close-coupling (AOCC), molecular-orbital close-coupling (MOCC), and classical trajectory Monte Carlo methods for various collisional velocities relevant to astrophysics. X-ray spectra were computed for collisions of bare and H-like C to Al ions with H, He, and H_2_ with results compared to available experimental data. Using these line ratios, XSPEC models of CX emission in the northeast rim of the Cygnus Loop supernova remnant and the heliosphere are shown as examples with ion velocity dependence.2018ApJ...852....7Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/852/7CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJ/844/7 : X-ray line ratios for diverse ion collisions (Mullen+, 2017)J/MNRAS/449/3323 : (Li-He)^+^ collisions non-radiative processes (Belyaev+,J/A+A/376/1113 : Line ratios for helium-like ions (Porquet+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/852/7https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/852/7http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/852/7https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/852/7https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/852/7http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/852/7GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapX-raydefaultJ/ApJ/852/7/table2*Charge exchange X-ray emission with H targets for single-electron capture (SEC)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLineLine designationmeta.id;spect.linecharEnergy[127.1/2640.2] Photon energyeVem.energydouble200ev/u[0/4.6] Collision velocity of 200eV.u^-1^195.7km/sphys.atmol.collisional;phys.velocdouble300ev/u[0/4] Collision velocity of 300eV.u^-1^239.7km/sphys.atmol.collisional;phys.velocdouble500ev/u[0.0002/3.5] Collision velocity of 500eV.u^-1^309.4km/sphys.atmol.collisional;phys.velocdouble700ev/u[0/3.2] Collision velocity of 700eV.u^-1^366.1km/sphys.atmol.collisional;phys.velocdouble1000ev/u[0/3] Collision velocity of 1000eV.u^-1^437.5km/sphys.atmol.collisional;phys.velocdouble2000ev/u[0/2.7] Collision velocity of 2000eV.u^-1^618.8km/sphys.atmol.collisional;phys.velocdouble3000ev/u[0/2.7] Collision velocity of 3000eV.u^-1^757.8km/sphys.atmol.collisional;phys.velocdouble5000ev/u[0/2.7] Collision velocity of 5000eV.u^-1^978.4km/sphys.atmol.collisional;phys.velocdoubleJ/ApJ/852/7/table3*Charge exchange X-ray emission with He targets for SECrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLineLine designationmeta.id;spect.linecharEnergy[127.1/2640.2] Photon energyeVem.energydouble200ev/u[0/4.6] Collision velocity of 200eV.u^-1^195.7km/sphys.atmol.collisional;phys.velocdouble300ev/u[0/4] Collision velocity of 300eV.u^-1^239.7km/sphys.atmol.collisional;phys.velocdouble500ev/u[0.0002/3.5] Collision velocity of 500eV.u^-1^309.4km/sphys.atmol.collisional;phys.velocdouble700ev/u[0/3.2] Collision velocity of 700eV.u^-1^366.1km/sphys.atmol.collisional;phys.velocdouble1000ev/u[0/3] Collision velocity of 1000eV.u^-1^437.5km/sphys.atmol.collisional;phys.velocdouble2000ev/u[0/2.7] Collision velocity of 2000eV.u^-1^618.8km/sphys.atmol.collisional;phys.velocdouble3000ev/u[0/2.7] Collision velocity of 3000eV.u^-1^757.8km/sphys.atmol.collisional;phys.velocdouble5000ev/u[0/2.7] Collision velocity of 5000eV.u^-1^978.4km/sphys.atmol.collisional;phys.velocdoubleJ/ApJ/852/7/table4*Charge exchange X-Ray emission with H_2_ targets for SECLineLine designationmeta.id;spect.linecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEnergy[127.1/2640.2] Photon energyeVem.energydouble200ev/u[0/4.6] Collision velocity of 200eV.u^-1^195.7km/sphys.atmol.collisional;phys.velocdouble300ev/u[0/4] Collision velocity of 300eV.u^-1^239.7km/sphys.atmol.collisional;phys.velocdouble500ev/u[0.0002/3.5] Collision velocity of 500eV.u^-1^309.4km/sphys.atmol.collisional;phys.velocdouble700ev/u[0/3.2] Collision velocity of 700eV.u^-1^366.1km/sphys.atmol.collisional;phys.velocdouble1000ev/u[0/3] Collision velocity of 1000eV.u^-1^437.5km/sphys.atmol.collisional;phys.velocdouble2000ev/u[0/2.7] Collision velocity of 2000eV.u^-1^618.8km/sphys.atmol.collisional;phys.velocdouble3000ev/u[0/2.7] Collision velocity of 3000eV.u^-1^757.8km/sphys.atmol.collisional;phys.velocdouble5000ev/u[0/2.7] Collision velocity of 5000eV.u^-1^978.4km/sphys.atmol.collisional;phys.velocdouble