Other
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009hrxs.confe...5c&link_type=abstract
"High Resolution X-ray Spectroscopy: Towards IXO, Proceedings of the international workshop held at the Mullard Space Science La
Other
Scientific paper
I will discuss Chandra gratings spectra of the neutron star low-mass X-ray binary 4U 1820-30. We study four observations over a range of fluxes to better understand the nature of X-ray absorption lines in neutron star LMXBs. The equivalent widths of the lines are generally consistent between the observations, as expected if these lines originate in the hot interstellar medium. There is apparent variability in the O VIII Ly-alpha line equivalent width providing some evidence that at least some of the O VIII absorption arises within the system. However, the significance is marginal (2.4-sigma), and the lack of variation in the other lines casts some doubt on the reality of the variability. I will show how XSTAR photoionization models can reproduce the observed spectra, but requires an extremely low filling factor. Thus, both the ISM and local absorption origins remain possible.
No associations
LandOfFree
Investigating the nature of absorption Lines in the Chandra X-Ray Spectra of the neutron star binary 4U 1820-30 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Investigating the nature of absorption Lines in the Chandra X-Ray Spectra of the neutron star binary 4U 1820-30, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Investigating the nature of absorption Lines in the Chandra X-Ray Spectra of the neutron star binary 4U 1820-30 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1192300