Local X-ray absorption: Galactic corona or IGM?

Details Local X-ray absorption: Galactic corona or IGM? Local X-ray absorption: Galactic corona or IGM?

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009hrxs.confe..47w&link_type=abstract

"High Resolution X-ray Spectroscopy: Towards IXO, Proceedings of the international workshop held at the Mullard Space Science La

Physics

Scientific paper

Deep, high-resolution X-ray spectra of bright AGN have revealed a ubiquitous reservoir of nearby warm-hot gas. However, due to the relatively low velocity resolution of these instruments (compared to UV and optical spectrographs), it is unclear whether these 'nearby' absorbers reside in the Galactic halo or farther away, such as in the Local Group or a local intergalactic medium filament. I will show how high-quality data along multiple lines of sight, coupled with ionization balance models, can place constraints on the origin of and physical conditions within these absorbers.

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