Discovery of Galactic O iv and O v X-ray absorption due to transition temperature gas in the PKS 2155-304 spectrum

Far-ultraviolet (FUV) observations have revealed transition temperature gas (TTG; log T(K)~ 5), located in the lower Galactic halo and in high-velocity clouds. However, the corresponding X-ray absorption has so far remained mostly undetected. In order to make an improvement in this respect in Galact...

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Veröffentlicht in:	Astronomy and astrophysics (Berlin) 2017-09, Vol.605, p.A47
Hauptverfasser:	Nevalainen, J., Wakker, B., Kaastra, J., Bonamente, M., Snowden, S., Paerels, F., de Vries, C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Absorption Density ratio Galaxy: halo instabilities Ionization line: identification Phase transitions Photoionization Spectrometers Transition temperature Transition temperatures Wavelengths X-rays: general
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