Astronomy and Astrophysics – Astronomy
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...182.4307k&link_type=abstract
American Astronomical Society, 182nd AAS Meeting, #43.07; Bulletin of the American Astronomical Society, Vol. 25, p.867
Astronomy and Astrophysics
Astronomy
Scientific paper
The BL Lacertae object, PKS2155-304, toward l(II=17,b({II)) =-52}, has been observed both with the Extreme Ultraviolet Explorer (EUVE) and the Goddard High Resolution Spectrograph (GHRS) aboard the Hubble Space Telescope (HST). The EUVE observations show no detectable Extreme-UV flux longward of 100 Angstroms, but shortward of 100 Angstroms the decreased interstellar attenuation yields clearly detectable flux from the continuum of PKS2155-304. The EUVE detection together with the deduced H I column density from the G140L data for H I Lyalpha obtained with the HST/GHRS are used to obtain constraints upon the ionization of hydrogen and helium through the galactic halo toward PKS2155-304. Constraints for the ionization of H and He are presented based upon assumptions for the intrinsic EUV fluxes of the observed BL Lacertae object. More definitive constraints will be provided with further EUVE observations.
Bruhweiler Fred
Cheng Kwang-Peng
Kondo Yoshihiko
No associations
LandOfFree
EUVE & HST Observations of PKS2155-304 & Constraints on the Ionization through the Galactic Halo 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 EUVE & HST Observations of PKS2155-304 & Constraints on the Ionization through the Galactic Halo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and EUVE & HST Observations of PKS2155-304 & Constraints on the Ionization through the Galactic Halo will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1849255