English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse
  1. Search Results / 
  2. View item / 
  3. Item Summary

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary
 PreviousNext  

Released
Journal Article

Silicon ISM X-ray absorption: the gaseous component

MPS-Authors
/persons/resource/persons195599

Gatuzz,  E.
High Energy Astrophysics, MPI for Astrophysics, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Gatuzz, E., Gorczyca, T. W., Hasoglu, M. F., Schulz, N. S., Corrales, L., & Mendoza, C. (2020). Silicon ISM X-ray absorption: the gaseous component. Monthly Notices of the Royal Astronomical Society, 498(1), L20-L24. doi:10.1093/mnrasl/slaa119.


Cite as: https://hdl.handle.net/21.11116/0000-0007-EE68-9
Abstract
We present a detailed analysis of the gaseous component of the Si K edge using high-resolution Chandra spectra of low-mass X-ray binaries. We fit the spectra with a modified version of the ISMabs model, including new photoabsorption cross-sections computed for all Si ionic species. We estimate column densities for Si i, Si ii, Si iii, Si xii, and Si xiii, which trace the warm, intermediate temperature, and hot phases of the Galactic interstellar medium. We find that the ionic fractions of the first two phases are similar. This may be due to the physical state of the plasma determined by the temperature or due to the presence of absorber material in the close vicinity of the sources. Our findings highlight the need for accurate modelling of the gaseous component before attempting to address the solid component.