67 citations · 550 across the 21 of their papers we have counts for
21 papers
High-Precision Transition Energy Measurements of Neon-like Fe XVII Ions
Chintan Shah, Moto Togawa, Marc Botz +15
We improve by a factor of 4-20 the energy accuracy of the strongest soft X-ray transitions of Fe XVII ions by resonantly exciting them in an electron beam ion trap with a monochrom…
Charge exchange in X-ray astrophysics
Liyi Gu, Chintan Shah
Charge exchange is an atomic process that primarily occurs at interfaces between the neutral and ionized gas. The study of the process has been carried out on three levels: the the…
X-ray spectra of the Fe-L complex III: systematic uncertainties in the atomic data
Liyi Gu, Chintan Shah, Junjie Mao +14
There has been a growing request from the X-ray astronomy community for a quantitative estimate of systematic uncertainties originating from the atomic data used in plasma codes. T…
Uncertainties in Atomic Data for Modeling Astrophysical Charge Exchange Plasmas
Liyi Gu, Chintan Shah, Ruitian Zhang
Relevant uncertainties on theoretical atomic data are vital to determine the accuracy of plasma diagnostics in a number of areas including in particular the astrophysical study. We…
New Measurement Resolves Key Astrophysical Fe XVII Oscillator Strength Problem
Steffen Kühn, Charles Cheung, Natalia S. Oreshkina +19
One of the most enduring and intensively studied problems of X-ray astronomy is the disagreement of state-of-the art theory and observations for the intensity ratio of two Fe XVII…
Fe XVII - line ratio diagnostic of shock formation radius in O stars
Gabriel J. Grell, Maurice A. Leutenegger, Chintan Shah
The - lines of Fe XVII in the X-ray spectrum of the O-type star Puppis exhibit an anomalous (3G + M2)/(3F) line ratio of 1.4, in comparison with 2.4 for alm…